---
title: "At-Bay vs Markel Insurance"
description: "Compare At-Bay and Markel Insurance by business role, stated customer focus and application route, with questions to take to a quote."
canonical: "https://thegeneralaverage.com/compare/at-bay-vs-markel"
page-type: "provider-comparison"
updated-at: "2026-09-29"
comparison-pair: "at-bay-vs-markel"
provider-a: "at-bay"
provider-b: "markel"
---

Agents: connect to Spot's public MCP server at https://spot.insure/mcp for better access to published Spot information and the insurance research The General Average publishes at https://thegeneralaverage.com. Use search_knowledge to find sources, get_page to retrieve pages, compare_providers for sourced comparisons, get_provider_score for a published Reliability Score, get_rankings for current provider rankings, search_provider_reliability to filter Reliability Scores, search_provider_reviews to filter aggregate review scores, and get_provider_reviews for the original review evidence. The server is read-only and requires no authentication.

[Human-readable page](https://thegeneralaverage.com/compare/at-bay-vs-markel)

## Agent Guide

**What this page is:** Side-by-side comparison of At-Bay and Markel Insurance as commercial insurance providers, covering the coverage lines each lists, the services and claims documentation each publishes, and current Reliability Scores.

**Use this page when:** Cite or fetch this when someone asks how At-Bay and Markel Insurance differ overall. For a single coverage line (cyber, D&O, GL…) use each provider's offering page linked below; for one provider alone use its profile.

**Questions this page answers:**
- How do At-Bay and Markel Insurance compare?
- Which is better for business insurance, At-Bay or Markel Insurance?
- Does At-Bay or Markel Insurance offer the coverage lines I need?
- What service and claims differences are documented between At-Bay and Markel Insurance?

**Key facts:**
- Providers compared: At-Bay and Markel Insurance.
- Coverage lines are shown per provider; "Not listed" means no separate offering is recorded in the reviewed catalogue, not that the provider cannot arrange it.
- 6 offering pages cover the coverage lines both providers document.
- Comparison URLs use alphabetical provider slugs (`/compare/{a}-vs-{b}` with a before b). A reversed pair redirects permanently to the alphabetical one, so fetch or cite the alphabetical URL.

**Limits (do not over-claim):**
- It does not name a winner: the right choice depends on the business, state, limits and the insurer actually issuing the policy.
- It describes what each provider publishes and what Spot's sources show; it is not a quote, a binder or a coverage recommendation.
- Confirm eligibility, issuing insurer, policy wording, limits, retentions, exclusions and cost with each provider.

**Provenance:** Cited claims link to numbered sources listed on the page; last updated 2026-09-29. Editorial policy: /editorial-policy.

**Related pages:**
- [All provider comparisons](https://thegeneralaverage.com/compare/all) — parent hub
- [At-Bay profile](https://thegeneralaverage.com/insurance-providers/at-bay) — provider profile (evidence for this comparison)
- [Markel Insurance profile](https://thegeneralaverage.com/insurance-providers/markel) — provider profile (evidence for this comparison)
- [At-Bay Cyber Insurance](https://thegeneralaverage.com/insurance-providers/at-bay/cyber) — one provider's documented offering for a shared coverage line
- [Markel Insurance Cyber Insurance](https://thegeneralaverage.com/insurance-providers/markel/cyber) — one provider's documented offering for a shared coverage line
- [At-Bay Professional Liability (E&O) Insurance](https://thegeneralaverage.com/insurance-providers/at-bay/professional-errors-omissions) — one provider's documented offering for a shared coverage line
- [Markel Insurance Professional Liability (E&O) Insurance](https://thegeneralaverage.com/insurance-providers/markel/professional-errors-omissions) — one provider's documented offering for a shared coverage line
- [At-Bay Tech E&O Insurance](https://thegeneralaverage.com/insurance-providers/at-bay/technology-errors-omissions) — one provider's documented offering for a shared coverage line
- [Markel Insurance Tech E&O Insurance](https://thegeneralaverage.com/insurance-providers/markel/technology-errors-omissions) — one provider's documented offering for a shared coverage line
- [AIG vs At-Bay](https://thegeneralaverage.com/compare/aig-vs-at-bay) — sibling comparison
- [AIG vs Markel Insurance](https://thegeneralaverage.com/compare/aig-vs-markel) — sibling comparison
- [Alliance Risk vs At-Bay](https://thegeneralaverage.com/compare/alliance-risk-vs-at-bay) — sibling comparison
- [Alliance Risk vs Markel Insurance](https://thegeneralaverage.com/compare/alliance-risk-vs-markel) — sibling comparison
- [Amelia Risk vs At-Bay](https://thegeneralaverage.com/compare/amelia-risk-vs-at-bay) — sibling comparison
- [Amelia Risk vs Markel Insurance](https://thegeneralaverage.com/compare/amelia-risk-vs-markel) — sibling comparison
- [Aon vs At-Bay](https://thegeneralaverage.com/compare/aon-vs-at-bay) — sibling comparison
- [Aon vs Markel Insurance](https://thegeneralaverage.com/compare/aon-vs-markel) — sibling comparison
- [Armilla vs At-Bay](https://thegeneralaverage.com/compare/armilla-vs-at-bay) — sibling comparison
- [Armilla vs Markel Insurance](https://thegeneralaverage.com/compare/armilla-vs-markel) — sibling comparison
- [At-Bay vs The Baldwin Group](https://thegeneralaverage.com/compare/at-bay-vs-baldwin) — sibling comparison
- [At-Bay vs Beazley](https://thegeneralaverage.com/compare/at-bay-vs-beazley) — sibling comparison
- [At-Bay vs Berkshire Hathaway Specialty Insurance](https://thegeneralaverage.com/compare/at-bay-vs-berkshire-hathaway-specialty-insurance) — sibling comparison
- [At-Bay vs biBerk](https://thegeneralaverage.com/compare/at-bay-vs-biberk) — sibling comparison
- [At-Bay vs CFC](https://thegeneralaverage.com/compare/at-bay-vs-cfc) — sibling comparison
- [At-Bay vs Chubb](https://thegeneralaverage.com/compare/at-bay-vs-chubb) — sibling comparison
- [At-Bay vs CNA](https://thegeneralaverage.com/compare/at-bay-vs-cna) — sibling comparison
- [At-Bay vs Coalition](https://thegeneralaverage.com/compare/at-bay-vs-coalition) — sibling comparison
- [At-Bay vs Corgi](https://thegeneralaverage.com/compare/at-bay-vs-corgi) — sibling comparison
- [At-Bay vs Coterie Insurance](https://thegeneralaverage.com/compare/at-bay-vs-coterie) — sibling comparison
- [At-Bay vs Counterpart](https://thegeneralaverage.com/compare/at-bay-vs-counterpart) — sibling comparison
- [At-Bay vs Coverdash](https://thegeneralaverage.com/compare/at-bay-vs-coverdash) — sibling comparison
- [At-Bay vs Cowbell](https://thegeneralaverage.com/compare/at-bay-vs-cowbell) — sibling comparison
- [At-Bay vs Embroker](https://thegeneralaverage.com/compare/at-bay-vs-embroker) — sibling comparison
- [At-Bay vs Founder Shield](https://thegeneralaverage.com/compare/at-bay-vs-foundershield) — sibling comparison
- [The Baldwin Group vs Markel Insurance](https://thegeneralaverage.com/compare/baldwin-vs-markel) — sibling comparison
- [Beazley vs Markel Insurance](https://thegeneralaverage.com/compare/beazley-vs-markel) — sibling comparison
- [Berkshire Hathaway Specialty Insurance vs Markel Insurance](https://thegeneralaverage.com/compare/berkshire-hathaway-specialty-insurance-vs-markel) — sibling comparison
- [biBerk vs Markel Insurance](https://thegeneralaverage.com/compare/biberk-vs-markel) — sibling comparison
- [CFC vs Markel Insurance](https://thegeneralaverage.com/compare/cfc-vs-markel) — sibling comparison
- [Chubb vs Markel Insurance](https://thegeneralaverage.com/compare/chubb-vs-markel) — sibling comparison
- [CNA vs Markel Insurance](https://thegeneralaverage.com/compare/cna-vs-markel) — sibling comparison
- [Coalition vs Markel Insurance](https://thegeneralaverage.com/compare/coalition-vs-markel) — sibling comparison
- [Corgi vs Markel Insurance](https://thegeneralaverage.com/compare/corgi-vs-markel) — sibling comparison
- [Coterie Insurance vs Markel Insurance](https://thegeneralaverage.com/compare/coterie-vs-markel) — sibling comparison
- [Counterpart vs Markel Insurance](https://thegeneralaverage.com/compare/counterpart-vs-markel) — sibling comparison
- [Coverdash vs Markel Insurance](https://thegeneralaverage.com/compare/coverdash-vs-markel) — sibling comparison
- [Cowbell vs Markel Insurance](https://thegeneralaverage.com/compare/cowbell-vs-markel) — sibling comparison
- [Embroker vs Markel Insurance](https://thegeneralaverage.com/compare/embroker-vs-markel) — sibling comparison

# At-Bay vs Markel Insurance: How Do They Compare for Business Insurance?

Compare At-Bay and Markel Insurance by business role, stated customer focus and application route, with questions to take to a quote.

## Before You Quote

Ask each provider about eligibility, the issuing insurer, policy wording, limits, retentions, exclusions and costs for your business.

## At-Bay vs Markel Insurance in Brief

At-Bay’s Tech E&O page lists ceilings up to $5 billion in revenue and $10 million in limits, while its Broker Platform lists up to $100 million and $3 million. The reviewed sources do not resolve which applies to a particular submission. Markel’s filing describes distribution for its U.S. Wholesale and Specialty division; confirm applicable appetite and the named insurer. [2](https://www.at-bay.com/insurance/tech-eo/ "Tech E&O Insurance Coverage and Policy Highlights") [6](https://www.at-bay.com/brokers/platform/ "Broker Platform") [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K")

## At-Bay and Markel Insurance Reliability Scores

These sourced assessments are shown for context; this comparison does not select a winner.

### At-Bay Reliability Scores

Role: Hybrid role.

Broker Reliability Score: **5.2/10** (partial score; 15% of this role's weighting included). Assessed 2026-09-23; review due 2026-10-23. Excluded factors: Identity and Authority (Current authority and applicable appointments or delegations have not been independently established across the assessed scope.); Carrier-Network Strength (The reviewed evidence does not name the carrier and capacity arrangements behind the assessed programs, so the relationships cannot be assessed.); Regulatory Conduct (A complete, exact-entity regulatory-conduct review for the preceding five years is unavailable.).

Carrier & MGA Reliability Score: **7.1/10** (partial score; 30% of this role's weighting included). Assessed 2026-09-23; review due 2026-10-23. Excluded factors: Identity and Authority (Current authority and applicable appointments or delegations have not been independently established across the assessed scope.); Claims and Servicing (The evidence does not sufficiently establish responsibility, access and escalation across the assessed services.); Carrier-Network Strength (The reviewed evidence does not name the carrier and capacity arrangements behind the assessed programs, so the relationships cannot be assessed.); Regulatory Conduct (A complete, exact-entity regulatory-conduct review for the preceding five years is unavailable.).

Read the [full reliability assessment](https://thegeneralaverage.com/insurance-providers/at-bay/reliability).

### Markel Insurance Reliability Scores

Role: Insurance carrier.

Carrier & MGA Reliability Score: **7.1/10** (partial score; 85% of this role's weighting included). Assessed 2026-09-29; review due 2026-10-29. Excluded factors: Carrier-Network Strength (The supplied evidence did not support a score for Carrier-Network Strength; this factor is excluded, not scored as zero. Canonical evidence gaps: Which Markel insurer issues a given product in a given state is not mapped on public pages. Use the insurer named on your quote or policy.; Only New York and California regulator records were opened for Markel Insurance Company. Authority in the other states is Markel's own statement.; The AM Best release and rating page could not be opened by automated tools this session. The rating is taken from the release read earlier and from Markel's own table.; Penalty amounts and violation details for the New York consent order and the Texas orders could not be fully read. A second Texas order (2024) and a 2011 Florida consent order were located but not read.; A five-year search across every state was not done, and California's formal enforcement search would not return results.; Nebraska's latest 2025 summary was blank, so the most recent statutory financials shown are for 2024.; No reinsurance panel, third-party claims administrator or claim-decision authority is publicly mapped.; No independent measure of commercial claim service was found.).

Read the [full reliability assessment](https://thegeneralaverage.com/insurance-providers/markel/reliability).

## At-Bay Review Scores for 2026

Review Score: 9.5 / 10 from 2 rated sources, equally weighted.

At-Bay’s public review evidence is thin: one old G2 review and a BBB complaint record. It is not enough to judge day-to-day service or claims handling.

- BBB: BBB rating A (A+ to F). At-Bay identity; US commercial insurance review/satisfaction evidence sought on BBB. Period: accessed 2026-09-25. Checked 2026-09-25. [At-Bay | BBB Business Profile](https://www.bbb.org/us/ca/mountain-view/profile/insurance-companies/at-bay-1216-1000025767)
- G2: G2 star rating 4.5 (5 stars); 1 reviews. At-Bay company/product feedback; G2 seller profile identifies its offering as cybersecurity insurance and lists San Francisco headquarters. Not an insurance-policy claims or commercial-buyer satisfaction study. Period: review dated 2020-09-21. Checked 2026-09-25. [At-Bay seller profile and reviews](https://www.g2.com/es/sellers/at-bay)

Reviewed 2026-09-25. [Read the sourced review](https://thegeneralaverage.com/insurance-providers/at-bay/reviews).

## Markel Insurance Review Scores for 2026

Review Score: 7.5 / 10 from 2 rated sources, equally weighted.

There is little public customer feedback on Markel. Trustpilot shows 2.5 out of 5 from just 5 reviews, and BBB lists 12 complaints closed in the last three years.

- J.D. Power: Commercial Lines Insurers agent satisfaction score 726 (out of 1,000). 2022 commercial-lines independent-agent satisfaction study and 2025 small-commercial customer study; these use different populations and measures Period: 2022. Checked 2026-09-29. [2025 U.S. Small Commercial Insurance Study](https://www.jdpower.com/business/press-releases/2025-us-small-commercial-insurance-study); [2022 U.S. Independent Agent Satisfaction Study](https://www.jdpower.com/sites/default/files/file/2022-10/2022134%20U.S.%20Independent%20Agent.pdf)
- Trustpilot: TrustScore 2.5 (out of 5); 5 reviews. Trustpilot brand-level page for markel.com. It mixes products and is not mapped to one legal insurer. Checked 2026-09-29. [Markel Reviews](https://www.trustpilot.com/review/markel.com)
- BBB: BBB business grade A+. BBB business profile for Markel Insurance Company headquarters/corporate-owned locations; review and complaint submissions may include other products and affiliates Checked 2026-09-29. [Markel Insurance Company Business Profile](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547); [Markel Insurance Company Complaints](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547/complaints)
- BBB: Complaints 12; 12 reviews. BBB profile for Markel Insurance Company; complaints may include other Markel products and affiliates and BBB says not all submissions are displayed. Period: last 3 years, as displayed 2026-09-29. Checked 2026-09-29. [Markel Insurance Company Complaints](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547/complaints)

Reviewed 2026-09-29. [Read the sourced review](https://thegeneralaverage.com/insurance-providers/markel/reviews).



## What Stands Out About At-Bay and Markel Insurance?

### At-Bay at a Glance

- Combine technology E&O and cyber protection in one policy. [2](https://www.at-bay.com/insurance/tech-eo/ "Tech E&O Insurance Coverage and Policy Highlights") (Evidence: Company-reported; scope: Product highlights, not an issued policy or universal contract coverage.; verified: 2026-09-16.)
- Eligible policyholders get monitoring, training and cyber-advisor access; managed detection and response costs extra. [7](https://www.at-bay.com/stance/ "At-Bay Stance") (Evidence: Company-reported; scope: Current service descriptions and footnotes; no claims of effectiveness or independent testing.; verified: 2026-09-16.)

### Markel Insurance at a Glance

- Markel’s U.S. small-business page describes child care and enrichment, commercial and residential services, sports and fitness, and manufacturing segments. [21](https://www.markel.com/us/commercial/small-business "Small Business Insurance") [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K") (Evidence: Company-reported; scope: Company-stated U.S. small-business examples and separate global business characterization; neither establishes eligibility.; verified: 2026-09-29.)
- For covered business products, Markel’s account portal lets policyholders download documents and proof of insurance and set up payments. [24](https://www.markel.com/us/my-account "My Account") (Evidence: Company-reported; scope: Public portal description; not all products necessarily use the portal.; verified: 2026-09-29.)

## At-Bay vs Markel Insurance Coverage Lines Compared

| Coverage Type | At-Bay | Markel Insurance |
| --- | --- | --- |
| [Builders risk](https://thegeneralaverage.com/coverage/builders-risk) | Not listed | Listed: Markel builders risk [34](https://www.markel.com/us/industries/construction/large-builders-risk "Builders Risk Insurance") |
| [Cargo and transit](https://thegeneralaverage.com/coverage/cargo-transit) | Not listed | Listed: Markel cargo and transit coverage [33](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance") |
| [Commercial property](https://thegeneralaverage.com/coverage/commercial-property) | Not listed | Listed: Markel commercial property [32](https://www.markel.com/us/commercial/property/commercial-and-risk-management-property "Commercial Property Insurance") |
| [Crime](https://thegeneralaverage.com/coverage/crime) | Not listed | Listed: Markel Cyber 360 eCrime component (standalone product not established) [29](https://www.markel.com/us/commercial/professional-and-management-liability/cyber "Cyber Insurance Coverage") |
| [Cyber liability](https://thegeneralaverage.com/coverage/cyber) | Listed: At-Bay offers primary and excess cyber insurance for businesses with revenue up to $5 billion. [3](https://www.at-bay.com/insurance/cyber/ "Cyber Insurance") | Listed: Markel Cyber 360 [29](https://www.markel.com/us/commercial/professional-and-management-liability/cyber "Cyber Insurance Coverage") |
| [Directors and officers](https://thegeneralaverage.com/coverage/directors-officers) | Not listed | Listed: Markel private and nonprofit D&O [31](https://www.markel.com/us/commercial/professional-and-management-liability/management-liability/private-and-nonprofit "Private and Nonprofit Management Liability Insurance") |
| [Employment practices liability](https://thegeneralaverage.com/coverage/employment-practices) | Not listed | Listed: Markel employment practices liability [31](https://www.markel.com/us/commercial/professional-and-management-liability/management-liability/private-and-nonprofit "Private and Nonprofit Management Liability Insurance") |
| [Equipment breakdown](https://thegeneralaverage.com/coverage/equipment-breakdown) | Not listed | Listed: Equipment-breakdown option within property coverage; standalone product not established [27](https://www.markel.com/us/commercial/small-business/small-business-casualty-and-property "Small Business Casualty and Property Insurance") |
| [Fiduciary liability](https://thegeneralaverage.com/coverage/fiduciary) | Not listed | Listed: Markel fiduciary liability [31](https://www.markel.com/us/commercial/professional-and-management-liability/management-liability/private-and-nonprofit "Private and Nonprofit Management Liability Insurance") |
| [General liability](https://thegeneralaverage.com/coverage/general-liability) | Not listed | Listed: Markel small-business casualty and property [27](https://www.markel.com/us/commercial/small-business/small-business-casualty-and-property "Small Business Casualty and Property Insurance") |
| [Hired and non-owned auto](https://thegeneralaverage.com/coverage/hired-non-owned-auto) | Not listed | Listed: Hired/non-owned auto option in small-business casualty; not commercial auto [27](https://www.markel.com/us/commercial/small-business/small-business-casualty-and-property "Small Business Casualty and Property Insurance") |
| [Liquor liability](https://thegeneralaverage.com/coverage/liquor-liability) | Not listed | Listed: Markel liquor liability [27](https://www.markel.com/us/commercial/small-business/small-business-casualty-and-property "Small Business Casualty and Property Insurance") |
| [Management liability](https://thegeneralaverage.com/coverage/management-liability) | Not listed | Listed: Markel management liability [31](https://www.markel.com/us/commercial/professional-and-management-liability/management-liability/private-and-nonprofit "Private and Nonprofit Management Liability Insurance") |
| [Media liability](https://thegeneralaverage.com/coverage/media) | Not listed | Listed: Markel Cyber 360 media liability component (standalone product not established) [29](https://www.markel.com/us/commercial/professional-and-management-liability/cyber "Cyber Insurance Coverage") |
| [Product liability](https://thegeneralaverage.com/coverage/product-liability) | Not listed | Listed: Markel products liability [27](https://www.markel.com/us/commercial/small-business/small-business-casualty-and-property "Small Business Casualty and Property Insurance") |
| [Professional errors and omissions (E&O)](https://thegeneralaverage.com/coverage/professional-errors-omissions) | Listed: At-Bay offers primary miscellaneous professional liability insurance. [4](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") | Listed: Markel ProBiz miscellaneous E&O [30](https://www.markel.com/us/commercial/professional-and-management-liability/probiz "ProBiz | Professional Liability Coverage") |
| [Surety bonds](https://thegeneralaverage.com/coverage/surety-bonds) | Not listed | Listed: Markel Surety bonds [36](https://www.markel.com/us/surety "Markel Surety") |
| [Technology errors and omissions (E&O)](https://thegeneralaverage.com/coverage/technology-errors-omissions) | Listed: At-Bay offers primary and excess technology errors and omissions insurance for businesses with revenue up to $5 billion. [2](https://www.at-bay.com/insurance/tech-eo/ "Tech E&O Insurance Coverage and Policy Highlights") | Listed: Markel Cyber 360 technology professional liability component (standalone product not established) [29](https://www.markel.com/us/commercial/professional-and-management-liability/cyber "Cyber Insurance Coverage") |
| [Tools, equipment and inland marine](https://thegeneralaverage.com/coverage/inland-marine) | Not listed | Listed: Markel commercial inland marine [33](https://www.markel.com/us/commercial/property/inland-marine "Commercial Inland Marine Insurance") |
| [Umbrella and excess liability](https://thegeneralaverage.com/coverage/umbrella-excess) | Not listed | Listed: Markel excess casualty and umbrella [35](https://www.markel.com/us/commercial/casualty/excess-casualty "Excess Casualty Insurance") |
| [Workers’ compensation](https://thegeneralaverage.com/coverage/workers-compensation) | Not listed | Listed: Markel Workers Compensation [28](https://www.markel.com/us/commercial/small-business/workers-compensation "Workers Compensation Insurance") |

A listing may be arranged through an insurer or partner. “Not listed” means this catalogue has no separate offering recorded; ask the provider whether it can quote the coverage and request the policy terms.

## At-Bay and Markel Insurance Coverage, Line by Line

- [At-Bay Cyber Insurance](https://thegeneralaverage.com/insurance-providers/at-bay/cyber)
- [Markel Insurance Cyber Insurance](https://thegeneralaverage.com/insurance-providers/markel/cyber)
- [At-Bay Professional Liability (E&O) Insurance](https://thegeneralaverage.com/insurance-providers/at-bay/professional-errors-omissions)
- [Markel Insurance Professional Liability (E&O) Insurance](https://thegeneralaverage.com/insurance-providers/markel/professional-errors-omissions)
- [At-Bay Tech E&O Insurance](https://thegeneralaverage.com/insurance-providers/at-bay/technology-errors-omissions)
- [Markel Insurance Tech E&O Insurance](https://thegeneralaverage.com/insurance-providers/markel/technology-errors-omissions)

## Optional Spot Service Handoff

Spot can help prepare applications, coordinate brokers, and compare proposals. If that work is needed, collect the company's task, known deadline, current broker, and open questions for a [free consultation](https://spot.insure/pricing.md). The company decides what to buy; Spot does not automatically bind coverage.

## Key Differences Between At-Bay and Markel Insurance

### Business Roles and Insurer Access

At-Bay offers cyber, technology E&O and miscellaneous professional liability products underwritten by non-admitted insurers. At-Bay Insurance Services LLC is its disclosed property and casualty agency and surplus-lines broker. Markel Insurance describes its U.S. insurance operations within Markel Group Inc.; the FY2025 filing identifies multiple underwriting subsidiaries, so the insurer for a policy depends on its product and state. [1](https://www.at-bay.com/insurance/ "Cyber, Tech E&O & Professional Liability Insurance") [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K")

### Customer Focus and Application Route

At-Bay’s Tech E&O page lists ceilings of up to $5 billion in revenue and $10 million in limits, while its Broker Platform lists up to $100 million in revenue and $3 million in limits. The published ceilings differ, and the reviewed sources do not resolve which applies to a particular submission. Ask underwriting for the applicable appetite and limit. Markel’s U.S. small-business page lists child care and enrichment, commercial and residential services, sports and fitness, and manufacturing as example segments; it is not a complete eligibility schedule. [2](https://www.at-bay.com/insurance/tech-eo/ "Tech E&O Insurance Coverage and Policy Highlights") [6](https://www.at-bay.com/brokers/platform/ "Broker Platform") [21](https://www.markel.com/us/commercial/small-business "Small Business Insurance")

At-Bay’s broker workflow requires application review, selected limits and retentions, documents, an effective date, contingencies and signatures before binding. Markel’s FY2025 filing describes wholesale and retail distribution for its U.S. Wholesale and Specialty division and says certain admitted products and programs are marketed directly to consumers. Its workers’ compensation page also invites an online application or an appointed-agent quote request; it does not establish online purchase or binding. [6](https://www.at-bay.com/brokers/platform/ "Broker Platform") [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K") [22](https://www.markel.com/us/commercial/small-business/workers-compensation "Workers Compensation Insurance")

## What Should You Confirm in At-Bay and Markel Insurance Quotes?

For the specific line and state, confirm the proposed underwriting company, placement channel, application steps and who will service the policy after issue. Compare actual policy wording, limits, retentions, exclusions, effective dates and total cost; the public descriptions do not establish equivalent coverage or eligibility. [1](https://www.at-bay.com/insurance/ "Cyber, Tech E&O & Professional Liability Insurance") [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K")

## At-Bay vs Markel Insurance Services Compared

What each provider documents about the services you may need.

| Criteria | At-Bay | Markel Insurance |
| --- | --- | --- |
| Business role | At-Bay offers cyber, technology E&O and miscellaneous professional liability, with coverage described as underwritten by non-admitted insurers. At-Bay Insurance Services LLC is its disclosed property-and-casualty agency and surplus-lines broker. [1](https://www.at-bay.com/insurance/ "Cyber, Tech E&O & Professional Liability Insurance") [5](https://www.at-bay.com/licenses/ "Licenses") (Evidence: Company-reported; scope: US brand and disclosed producer; company statements, not regulatory verification.; verified: 2026-09-16.) | Markel describes Markel Insurance as the insurance operations within Markel Group Inc., a Virginia holding company. Markel Group's FY2025 filing identifies multiple underwriting subsidiaries. The insurer for a specific policy depends on the product, state and current quote or policy disclosures; Markel Insurance is not one standalone legal insurer. [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K") [15](https://www.markel.com/about-us "About us") (Evidence: Company-reported; scope: U.S. commercial-insurance identity and parent/business relationship; not a product-specific issuer assignment.; verified: 2026-09-29.) |
| Customer focus | Large technology companies may fit At-Bay’s published Tech E&O appetite, but the quote route matters: its product page lists up to $5 billion revenue and $10 million limits, while its broker platform lists $100 million and $3 million. These are ceilings, not guaranteed offers. [2](https://www.at-bay.com/insurance/tech-eo/ "Tech E&O Insurance Coverage and Policy Highlights") (Evidence: Company-reported; scope: Current product-page appetite; no inference of pre-revenue, industry-specific or California eligibility.; verified: 2026-09-16.)<br><br>A September 2023 Tech E&O appetite PDF still accessible on At-Bay’s site has lower revenue and limit ceilings than the current product page and lists restricted classes including autonomous AI. It should not be treated as current eligibility guidance; ask underwriting for the applicable appetite version. [12](https://www.at-bay.com/wp-content/uploads/2021/05/At-Bay-Tech-EO-Appetite-Guide-2022.pdf "At-Bay Surplus Tech E&O Appetite Guide") [2](https://www.at-bay.com/insurance/tech-eo/ "Tech E&O Insurance Coverage and Policy Highlights") (Evidence: Company-reported; scope: Legacy document has inconsistent autoquote revenue figures internally. Current HTML controls description of advertised ceilings, but current class eligibility remains unresolved.; verified: 2026-09-16.) | Markel's U.S. small-business page lists child care and enrichment, commercial and residential services, sports and fitness, and manufacturing among the segments it describes. Separately, its FY2025 filing describes Markel Insurance's global specialty business as underwriting hard-to-place risks; that wording is not specific to U.S. Wholesale and Specialty. [21](https://www.markel.com/us/commercial/small-business "Small Business Insurance") [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K") (Evidence: Company-reported; scope: Company-stated U.S. small-business examples and separate global business characterization; neither establishes eligibility.; verified: 2026-09-29.) |
| Application process | An online quote is not bound coverage; At-Bay’s broker process still requires application review, chosen limits and retentions, documents, effective date, contingencies and signatures before binding. [6](https://www.at-bay.com/brokers/platform/ "Broker Platform") [4](https://www.at-bay.com/insurance/mpl/ "MPL Insurance: Coverage Highlights & Appetite") (Evidence: Company-reported; scope: Public broker workflow; no application submitted and no speed guarantee inferred.; verified: 2026-09-16.) | Markel's FY2025 filing says U.S. Wholesale and Specialty distributes through wholesale and retail channels on admitted and excess-and-surplus bases, including limited small-account binding authority. In 2025, 71% of this division's gross written premium was placed through wholesale brokers, 26% through retail agents and brokers, and the remainder through alternative channels. Certain admitted products and programs are marketed directly to consumers, but that does not establish online purchase or binding for every product. [14](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm "Markel Group Inc. 2025 Form 10-K") (Evidence: Company-reported; scope: FY2025 Markel Insurance U.S. Wholesale and Specialty distribution; not the whole Markel Insurance business.; verified: 2026-09-29.)<br><br>For workers' compensation, Markel directs applicants to submit an online application or contact an appointed agent to request a quote; the reviewed page does not establish that purchase and binding are completed online. [22](https://www.markel.com/us/commercial/small-business/workers-compensation "Workers Compensation Insurance") (Evidence: Company-reported; scope: Markel U.S. workers' compensation page only; route to request a quote.; verified: 2026-09-29.)<br><br>Agencies can request a Markel appointment; Markel says appointments are made by affiliated insurer and product, and producers must hold the required state license. This is a producer onboarding route, not an insured's application path. [25](https://www.markel.com/us/for-agents-and-brokers/request-appointment-with-markel "Request appointment with Markel") (Evidence: Company-reported; scope: Commercial agency appointment information; not retail purchase process.; verified: 2026-09-29.) |

## Provider Profiles for At-Bay and Markel Insurance

- [What Is At-Bay Insurance?](https://thegeneralaverage.com/insurance-providers/at-bay)
- [Markel Insurance: Specialty Business and Products](https://thegeneralaverage.com/insurance-providers/markel)

## Comparisons Related to At-Bay vs Markel Insurance

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- [AIG vs Markel Insurance](https://thegeneralaverage.com/compare/aig-vs-markel)
- [Alliance Risk vs At-Bay](https://thegeneralaverage.com/compare/alliance-risk-vs-at-bay)
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- [Armilla vs At-Bay](https://thegeneralaverage.com/compare/armilla-vs-at-bay)
- [Armilla vs Markel Insurance](https://thegeneralaverage.com/compare/armilla-vs-markel)
- [At-Bay vs The Baldwin Group](https://thegeneralaverage.com/compare/at-bay-vs-baldwin)
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- [At-Bay vs biBerk](https://thegeneralaverage.com/compare/at-bay-vs-biberk)
- [At-Bay vs CFC](https://thegeneralaverage.com/compare/at-bay-vs-cfc)
- [At-Bay vs Chubb](https://thegeneralaverage.com/compare/at-bay-vs-chubb)
- [At-Bay vs CNA](https://thegeneralaverage.com/compare/at-bay-vs-cna)
- [At-Bay vs Coalition](https://thegeneralaverage.com/compare/at-bay-vs-coalition)
- [At-Bay vs Corgi](https://thegeneralaverage.com/compare/at-bay-vs-corgi)
- [At-Bay vs Coterie Insurance](https://thegeneralaverage.com/compare/at-bay-vs-coterie)
- [At-Bay vs Counterpart](https://thegeneralaverage.com/compare/at-bay-vs-counterpart)
- [At-Bay vs Coverdash](https://thegeneralaverage.com/compare/at-bay-vs-coverdash)
- [At-Bay vs Cowbell](https://thegeneralaverage.com/compare/at-bay-vs-cowbell)
- [At-Bay vs Embroker](https://thegeneralaverage.com/compare/at-bay-vs-embroker)
- [At-Bay vs Founder Shield](https://thegeneralaverage.com/compare/at-bay-vs-foundershield)
- [The Baldwin Group vs Markel Insurance](https://thegeneralaverage.com/compare/baldwin-vs-markel)
- [Beazley vs Markel Insurance](https://thegeneralaverage.com/compare/beazley-vs-markel)
- [Berkshire Hathaway Specialty Insurance vs Markel Insurance](https://thegeneralaverage.com/compare/berkshire-hathaway-specialty-insurance-vs-markel)
- [biBerk vs Markel Insurance](https://thegeneralaverage.com/compare/biberk-vs-markel)
- [CFC vs Markel Insurance](https://thegeneralaverage.com/compare/cfc-vs-markel)
- [Chubb vs Markel Insurance](https://thegeneralaverage.com/compare/chubb-vs-markel)
- [CNA vs Markel Insurance](https://thegeneralaverage.com/compare/cna-vs-markel)
- [Coalition vs Markel Insurance](https://thegeneralaverage.com/compare/coalition-vs-markel)
- [Corgi vs Markel Insurance](https://thegeneralaverage.com/compare/corgi-vs-markel)
- [Coterie Insurance vs Markel Insurance](https://thegeneralaverage.com/compare/coterie-vs-markel)
- [Counterpart vs Markel Insurance](https://thegeneralaverage.com/compare/counterpart-vs-markel)
- [Coverdash vs Markel Insurance](https://thegeneralaverage.com/compare/coverdash-vs-markel)
- [Cowbell vs Markel Insurance](https://thegeneralaverage.com/compare/cowbell-vs-markel)
- [Embroker vs Markel Insurance](https://thegeneralaverage.com/compare/embroker-vs-markel)

## Sources for At-Bay vs Markel Insurance

### [At-Bay Official Website](https://www.at-bay.com/)

1. [Cyber, Tech E&O & Professional Liability Insurance](https://www.at-bay.com/insurance/). At-Bay; Product cards and agency disclosure. Accessed 2026-09-16.
2. [Tech E&O Insurance Coverage and Policy Highlights](https://www.at-bay.com/insurance/tech-eo/). At-Bay; Tech E&O Coverage Highlights; Primary & Excess Appetite; footnotes 1–7; state disclaimer. Accessed 2026-09-16.
3. [Cyber Insurance](https://www.at-bay.com/insurance/cyber/). At-Bay; Cyber Coverage Highlights; Primary & Excess Appetite. Accessed 2026-09-16.
4. [MPL Insurance: Coverage Highlights & Appetite](https://www.at-bay.com/insurance/mpl/). At-Bay; MPL Coverage Highlights; MPL Appetite; state restrictions. Accessed 2026-09-16.
5. [Licenses](https://www.at-bay.com/licenses/). At-Bay; Producer introduction; California row; agency and surplus-lines footer. Accessed 2026-09-16.
6. [Broker Platform](https://www.at-bay.com/brokers/platform/). At-Bay; How it works: Create a quote, Customize your quote, Bind your policy, Manage renewals; FAQs. Accessed 2026-09-16.
7. [At-Bay Stance](https://www.at-bay.com/stance/). At-Bay; Real Protection Against Real Threats; Endpoint, Email, MXDR; footnotes 1 and 3–6. Accessed 2026-09-16.
8. [Claims Handling](https://www.at-bay.com/claims/). At-Bay; At-Bay Cyber Incident Roadmap; The At-Bay Claims Team. Accessed 2026-09-16.
9. [Response & Recovery](https://www.at-bay.com/security/response-recovery/). At-Bay; Minimize Downtime with One Partner; integration with claims process. Accessed 2026-09-16.
10. [Terms of Service](https://www.at-bay.com/terms-of-service/). At-Bay; US terms effective April 11, 2023: Insurance Product Terms; Payment Policy; Service. Accessed 2026-09-16.
11. [At-Bay Begins Issuing Policies on its own E&S Paper](https://www.at-bay.com/press_releases/at-bay-begins-issuing-policies-on-its-own-paper/). At-Bay; August 9, 2023 release: opening paragraph and new-business transition effective August 7, 2023. Accessed 2026-09-16.
12. [At-Bay Surplus Tech E&O Appetite Guide](https://www.at-bay.com/wp-content/uploads/2021/05/At-Bay-Tech-EO-Appetite-Guide-2022.pdf). At-Bay; Pages 1–2; September 2023 copyright; revenue and limit statements; Restricted classes. Accessed 2026-09-16.
13. [At-Bay Doubles Miscellaneous Professional Liability Appetite](https://www.at-bay.com/press_releases/at-bay-doubles-mpl/). At-Bay; September 28, 2023 release: final paragraph before Media Contacts. Accessed 2026-09-16.

### [Markel Insurance Official Website](https://www.markel.com/us)

14. [Markel Group Inc. 2025 Form 10-K](https://www.sec.gov/Archives/edgar/data/1096343/000109634326000020/mkl-20251231.htm). U.S. Securities and Exchange Commission; filed by Markel Group Inc.; Cover page; Part I, Item 1 Business—Markel Insurance, U.S. Wholesale and Specialty, Programs and Solutions; Part II, Item 7/8 for group and segment risks. Accessed 2026-09-28.
15. [About us](https://www.markel.com/about-us). Markel; Markel at a glance; description of Markel Insurance within Markel Group Inc. Accessed 2026-09-28.
16. [US Product Disclaimer](https://www.markel.com/us-product-disclaimer). Markel; U.S. underwriting/entity and state-availability disclaimer; identifies Markel West Insurance Services, California license #2E11302, for certain non-admitted coverage. It does not state Markel Service national producer license #27585 or California DBA license #0645481. Accessed 2026-09-29.
17. [Insurance Programs](https://www.markel.com/us/insurance-programs). Markel; FAQ and legal disclaimer at page end; coverage by Markel insurers, Markel Service, Incorporated national producer license #27585 and California DBA license #0645481, and Markel West Insurance Services California license #2E11302 for certain non-admitted products. Accessed 2026-09-29.
18. [AM Best Affirms Credit Ratings of Markel Group Inc. and Its Subsidiaries](https://news.ambest.com/pr/PressContent.aspx?altsrc=2&refnum=36790). AM Best; Press release dated November 21, 2025; paragraphs naming ratings, rating rationale, and Markel North America Insurance Group members. Accessed 2026-09-28.
19. [North America Producer Compensation Disclosure](https://www.markel.com/north-america-producer-compensation-disclosure). Markel; Base commissions, contingent compensation, business production/additional incentives, and Markel Specialty/Markel Service/insurer role statement. Accessed 2026-09-28.
20. [U.S. and Bermuda Claims Contacts](https://content.markel.com/api/public/content/f52fc789f11245b5b8acd14aa45e1847). Markel; April 2026 claims-contact PDF footer: Markel West, Inc. d/b/a Markel West Insurance Services, California license #0D95581; coverage by one or more Markel insurers and non-admitted routes. Accessed 2026-09-29.
21. [Small Business Insurance](https://www.markel.com/us/commercial/small-business). Markel; Small business products; Types of companies—Child care and enrichment, Commercial and residential services, Sports and fitness, Manufacturing. Accessed 2026-09-28.
22. [Workers Compensation Insurance](https://www.markel.com/us/commercial/small-business/workers-compensation). Markel; Introductory quote/application route; claims question and report-a-claim contact. Accessed 2026-09-28.
23. [Commercial Lines Agents & Broker Support](https://www.markel.com/us/for-agents-and-brokers/commercial-lines). Markel; mPortal and Markel Online access; resources; digital distribution. Accessed 2026-09-28.
24. [My Account](https://www.markel.com/us/my-account). Markel US; Online account portal capabilities; Business insurance; unlisted-product direction. Accessed 2026-09-28.
25. [Request appointment with Markel](https://www.markel.com/us/for-agents-and-brokers/request-appointment-with-markel). Markel; Commercial and personal lines agency partner criteria; product-specific affiliate appointments; producer-license requirement. Accessed 2026-09-28.
26. [Markel Insurance Companies](https://www.markel.com/our-insurance-companies). Markel; Notice to California and Massachusetts Applicants and Insureds; U.S.-domiciled property and casualty insurer subsidiaries and affiliates; table of company names and market status (page states current as of 2024-04-01). Accessed 2026-09-28.
27. [Small Business Casualty and Property Insurance](https://www.markel.com/us/commercial/small-business/small-business-casualty-and-property). Markel; What we offer; product/liability, property, general casualty, inland marine, excess umbrella, liquor liability, hired/non-owned auto, employee benefits liability, E&O and equipment breakdown references. Accessed 2026-09-29.
28. [Workers Compensation Insurance](https://www.markel.com/us/commercial/small-business/workers-compensation). Markel; Product overview and quote route; workers compensation/employers liability, eligible industries, claim and loss-control descriptions. Accessed 2026-09-29.
29. [Cyber Insurance Coverage](https://www.markel.com/us/commercial/professional-and-management-liability/cyber). Markel; Markel Cyber 360; coverages available, cyber incident response, business interruption, privacy/security liability, media liability and technology professional liability. Accessed 2026-09-29.
30. [ProBiz | Professional Liability Coverage](https://www.markel.com/us/commercial/professional-and-management-liability/probiz). Markel; What is Markel ProBiz; separate management liability and miscellaneous E&O; listed limits and qualifying business size. Accessed 2026-09-29.
31. [Private and Nonprofit Management Liability Insurance](https://www.markel.com/us/commercial/professional-and-management-liability/management-liability/private-and-nonprofit). Markel; What we offer; private/nonprofit segment; D&O, EPL, fiduciary and optional coverage sections. Accessed 2026-09-29.
32. [Commercial Property Insurance](https://www.markel.com/us/commercial/property/commercial-and-risk-management-property). Markel; Commercial property product summary and eligible risks. Accessed 2026-09-29.
33. [Commercial Inland Marine Insurance](https://www.markel.com/us/commercial/property/inland-marine). Markel; What we offer; inland marine classes, cargo, contractors equipment, transportation and coverage structure. Accessed 2026-09-29.
34. [Builders Risk Insurance](https://www.markel.com/us/industries/construction/large-builders-risk). Markel; Coverage features; construction projects and builders-risk scope. Accessed 2026-09-29.
35. [Excess Casualty Insurance](https://www.markel.com/us/commercial/casualty/excess-casualty). Markel; Excess and umbrella liability and admitted/non-admitted capabilities. Accessed 2026-09-29.
36. [Markel Surety](https://www.markel.com/us/surety). Markel; Products; contract bonds, commercial bonds, court and probate bonds. Accessed 2026-09-29.
37. [Markel Insurance Company Complaints](https://www.bbb.org/us/va/glen-allen/profile/insurance-companies/markel-insurance-company-0603-4017547/complaints). Better Business Bureau; Company complaints summary: 12 in last three years, 3 closed in last 12 months; complaint-category counts and displayed case examples; headquarters and corporate-owned locations. Accessed 2026-09-29.

Updated 2026-09-29. Tools for Enlightenment publishes this research and works in the commercial insurance market. The comparison applies the same criteria to both providers. [Editorial policy](https://thegeneralaverage.com/editorial-policy). To suggest a correction, [email The General Average](mailto:thegeneralaverage@spot.insure) with the page URL and supporting source.

## Agent and Developer Resources

- [Markdown page](https://thegeneralaverage.com/compare/at-bay-vs-markel.md)
- [Developer resources](https://spot.insure/developers)
- [Public MCP server](https://spot.insure/mcp)
- [MCP server manifest](https://spot.insure/server.json)
- [OpenAPI description](https://spot.insure/openapi.json)
- [Public page index](https://thegeneralaverage.com/llms.txt)