
Arch Capital Group
Waterloo House 100 Pitts Bay Road, Pembroke, Hamilton, HM 08, Bermuda
Overview
Arch Capital Group is a public limited liability company that writes insurance, reinsurance, and mortgage insurance. Their customers value us as an innovative partner and dependable risk manager with decades of fresh ideas and solid results.
- Total investments
- 6
- Lead investments
- 0
- Investments · 12mo
- 2
- Active investors
- 9
Sector focus
- Finance
- Financial Services
- Insurance
Investment portfolio
- Novella
Participated · Equity · May 2026
Novella is an AI-native wholesale insurance broker co-founded in 2024 and headquartered in New York with an R&D facility in Tel Aviv. Its specialty AI agents perform placement, binding, form comparison, policy review, subjectivity collection, inspections, billing, endorsements, renewals, and other broking tasks to enable producers to focus on client relationships. The company has been appointed by close to 100 specialty carriers and managing general agents and receives business from more than 3,500 retail agencies. Novella has opened offices in Miami and Houston in 2026 and plans additional regional offices, including southern California in Q2. Leadership includes CEO and co-founder Max Kane, CTO Michael Tsibelman, and Head of Brokerage Alex Broome. Novella aims to become a top-five U.S. wholesale Excess & Surplus broker with $10 billion of premium within the decade.
- Comeryx
Participated · Seed · Feb 2026
Comeryx is an AI-native, digital MGA that uses advanced automation and data-driven underwriting to serve the excess & surplus (E&S) insurance needs of small-business artisan contractors. Its platform streamlines quoting, binding, and servicing, aiming to lower acquisition costs and improve loss ratios relative to traditional carriers. The company targets an addressable market of more than 500,000 U.S. artisan contracting firms with under $10 million in annual revenue, positioning itself as a focused specialist in an underserved niche. Headquartered in Denver, Colorado, Comeryx is led by CEO Dax Craig (formerly Pie Insurance and Valen Analytics) alongside seasoned insurtech, engineering, analytics, and underwriting executives. The business plans to invest heavily in AI model refinement, geographic expansion, and product breadth as it scales. Although no premium-written or revenue figures were disclosed, the recent seed financing provides the runway needed to grow its book and validate underwriting performance. Future priorities include building distribution partnerships and extending coverage classes to capture a larger share of the small-business E&S market.
- Rainbow
Participated · Seed · Jan 2024
Rainbow is a digitally-enabled managing general underwriter (MGU) that designs and delivers small business insurance products with a focus on vertical specialization. Its flagship product is an admitted business owner’s policy (BOP) built specifically for the restaurant industry and distributed through independent insurance agents and digital partners. The restaurant BOP is currently live in 24 states, with planned expansion into additional states including New York in the coming months. Rainbow has developed a proprietary “continuous underwriting” in-house risk monitoring software that enables real-time portfolio assessment, improves underwriting accuracy, and aims to decrease loss ratios. The company’s platform provides agents and brokers a seamless quote-to-bind experience and rewards policyholders for prudent operational practices. Rainbow plans to accelerate expansion of its specialized underwriting approach into additional business verticals and roll out recently launched programs nationwide. Rainbow is a digitally-enabled managing general underwriter focused on creating tailored small-business insurance programs. Its flagship product is an admitted business owner’s policy (BOP) specifically tailored to the restaurant industry, currently live in eight states and expected to be available in over 25 states this year. The company distributes exclusively through independent insurance agents and digital partners, offering a specialized appetite where many name-brand carriers have pulled back. Rainbow’s engineering team has built a proprietary, scalable platform for underwriting and transacting every submitted risk, using data and technology to create an underwriting advantage and reward policyholders that demonstrate prudent operations. The approach streamlines placement for agents while emphasizing loss-performance as the company grows its book. Rainbow plans to launch additional specialized programs in other business verticals that align with its underwriting approach and vision.
- Reserv
Participated · Series A · Oct 2023
Founded in 2022, Reserv provides TPA services and claims intelligence technology for property and casualty insurers and related risk-bearing entities. Its Reserv Glance platform centralizes historical and open claims into a single database and applies fully explainable AI to analyze and act on critical claims while scaling human and automated workflows. Clients can choose levels of automation ranging from automated handling of simpler claims to supported approaches for complex cases, allowing migration away from legacy claims systems in weeks. Reserv reports annual recurring revenue of $100 million, serves nearly 200 insurers, corporate captives, MGAs, and brokers, and employs over 500 claims adjusters. The company says it has more than doubled claims processing capacity each year and aims to scale from 500,000 annual complex claims capacity today to 30 million in four years. Reserv positions itself as operating in a "post-AI" environment where the latest AI tools are production-ready and integrated into its platform to improve outcomes and speed.
- TheGuarantors
Participated · Series C · Apr 2022
TheGuarantors provides risk infrastructure for residential leasing, including underwriting and guarantees used by property managers and owner-operators. Its platform currently supports nearly 4 million units across thousands of operators and serves 9 of the top 10 NMHC property management companies. Following a majority growth investment from Warburg Pincus, the company plans to expand its platform and deepen partnerships nationwide. TheGuarantors intends to advance AI-driven underwriting capabilities and invest in product, underwriting, and integration capabilities. The company emphasized continued focus on maintaining high standards of customer service as it scales.