Arch MI
Arch MI is the mortgage credit risk arm of Arch Capital Group, underwriting high-LTV mortgage insurance, second-lien and non-QM products, and credit risk transfer solutions for U.S., Australian and European lenders and banks through proprietary risk-pricing analytics.
- Company typePrivate
- Founded2017
- HeadquartersGreensboro, United States
- Headcount501–1,000
- GTM typeB2B
- OfferingServices
What Arch MI does
Arch MI (legally part of Arch Capital Group Ltd., NASDAQ: ACGL) is the mortgage credit risk operation of Arch's Global Mortgage Group, headquartered at 230 N Elm Street in Greensboro, North Carolina. Operating through wholly owned subsidiaries including Arch Mortgage Insurance Company, United Guaranty Residential Insurance Company, Arch Mortgage Guaranty Company, Arch Mortgage Assurance Company and Arch Mortgage Funding, the company underwrites first-lien mortgage guaranty insurance on high loan-to-value conventional mortgages, second-lien insurance (Equity Secure), non-QM correspondent loan purchases, and credit risk transfer solutions. It positions itself as the only globally diversified insurer of mortgage credit risk, with roughly 750 credit risk experts and operations spanning the United States (licensed in all 50 states, DC and Puerto Rico), Australia (Arch LMI, APRA-regulated), Europe (Arch Insurance (EU) dac, Central Bank of Ireland-regulated) and Bermuda (GSE CRT and reinsurance).
The technology stack centers on proprietary risk analytics: RateStar, a risk-based MI pricing platform (with a RateStar Buydown option) delivering borrower-level premium quotes; CONNECT, a secure platform for ordering MI and servicing policies; ARMOR (Arch Mortgage Risk Model), a proprietary credit risk model used for GSE CRT collateral assessment; the Arch MI Risk Index, a statistical model built on nine local housing-market health indicators; and Power BI-based portfolio visualization tools. In June 2025 Arch MI became the first mortgage insurer to embed RateStar pricing directly into Wilqo's Charlie loan origination platform.
The business monetizes through several streams: recurring mortgage insurance premiums (single, monthly and split premium plans), second-lien insurance, transaction-fee-based non-QM loan purchases through Arch Mortgage Funding, European Significant Risk Transfer (SRT) synthetic securitizations (capacity of over EUR 100 million per transaction), CRT advisory/managed services, and indemnity reinsurance placed via the Bellemeade Re insurance-linked note program (22 transactions securing nearly $10 billion since 2015). Go-to-market is an enterprise field-sales model with account managers across U.S. territories, a national accounts team, a dedicated credit union sales team, inside sales via CONNECT, and product-led integration through platforms like Wilqo. Pricing is quote-based and not publicly disclosed. Customer segments include U.S. mortgage lenders, credit unions, community banks, portfolio lenders/institutional investors, Australian lenders and European banks. MI-specific revenue is not disclosed; parent Arch Capital reported approximately $26.4 billion in capital at September 30, 2025.
Arch MI firmographics
Firmographics- Name
- Arch MI
- Legal name
- Arch Capital Group Ltd.
- Website
- https://mortgage.archgroup.com
- Company type
- Private
- Founded year
- 2017
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- Arch MI is the mortgage credit risk arm of Arch Capital Group, underwriting high-LTV mortgage insurance, second-lien and non-QM products, and credit risk transfer solutions for U.S., Australian and European lenders and banks through proprietary risk-pricing analytics.
- Ownership category
- akta.pro rank
Arch MI industry classification
Industry- Product category
- Mortgage Insurance
- NAICS
- Credit Intermediation and Related Activities (522)
- SIC
- Mortgage Bankers & Loan Correspondents (6162)
- akta.pro primary industry
- Mortgage Default Insurance & Loss Mitigation Services (Claims, Recoveries, MI Servicing) (FSALAJAH)
- akta.pro secondary industries
- Credit Risk Transfer (CRT) & Mortgage Credit Securities (CAS/STACR/ACIS) (FSALAFAH), Mortgage Reinsurance & Risk Sharing (Quota Share/Excess of Loss/CRT) (FSALAJAD), Product, Pricing & Eligibility (PPE) / Rate Lock & Pricing Engines (FSALALAC), Mortgage Point-of-Sale (POS) & Borrower Intake Portals (FSALALAD)
Keywords
Where Arch MI is headquartered
LocationHeadquarters
- HQ city
- Greensboro
- HQ country
- United States
- HQ region
- North America
Offices5 records
Markets served
Arch MI business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- Mortgage Insurance Premiums: First-lien mortgage guaranty insurance sold to lenders covering high LTV mortgages. Premiums can be paid through various plans including single premium, monthly premium, and split premium options. Protects lenders against borrower default risk.
- Second-Lien Mortgage Insurance: Arch MI Equity Secure products insuring second liens including HELOCs, HELOANs, and purchase money seconds through Arch Mortgage Assurance Company.
- Non-QM Loan Purchases: Arch Mortgage Funding purchases closed loans in the non-Agency correspondent market including Non-QM products, providing liquidity to lenders.
- Significant Risk Transfer (SRT): Credit risk transfer solutions to European banks through synthetic securitisations, providing regulatory capital relief. Capacity to deploy in excess of 100 million euros per transaction.
- Credit Risk Transfer Advisory Services: Leverages extensive credit risk management, mortgage underwriting and analytical expertise to provide reinsurers and other parties access to U.S. mortgage market analysis and systems.
- Indemnity Reinsurance (Bellemeade Program): Insurance-linked note transactions through Bellemeade Re special purpose reinsurers, providing indemnity reinsurance on mortgage insurance portfolios. 22 transactions completed since 2015 securing nearly $10 billion.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Usage-based | Pay-as-you-go | Risk-based pricing through RateStar platform customized per borrower risk profile |
Go-to-market motion3 records
Distribution channels5 records
Marketing channels8 records
Arch MI product offering
Product offeringCore offering
Arch MI provides mortgage guaranty insurance and mortgage credit risk management solutions to lenders in the U.S., Australia, Europe, and Bermuda. Its offerings include first-lien and second-lien residential mortgage insurance, lenders mortgage insurance in Australia, Significant Risk Transfer (SRT) and credit risk transfer solutions for European banks, non-QM loan purchases through Arch Mortgage Funding, and indemnity reinsurance via the Bellemeade Re program. Pricing is delivered through the proprietary RateStar platform, and policy ordering and servicing are handled via the CONNECT platform.
Differentiator
Problem solved
Functional benefit
Brands
- RateStar: Industry's preferred risk-based MI pricing platform providing rates based on thorough understanding of underlying risk
- CONNECT
- Equity Secure
- HaMMR Digest
- CUREN
- Arch MI Equity Secure
- PolicyCast
- Capital Commentary
- RateStar Buydown
- Arch MI Second-Lien Insurance
- Arch MI Structured Portfolio Solutions
Products and services
- U.S. Mortgage Insurance (First-Lien Mortgage Guaranty)
- Equity Secure Second-Lien Mortgage Insurance
- Arch Mortgage Funding (Non-QM Loan Purchases)
- Significant Risk Transfer (SRT) Solutions
- Bellemeade Re Indemnity Reinsurance Program
- Credit Risk Transfer Advisory Services
- Australia Lenders Mortgage Insurance (Arch LMI)
- Europe Mortgage Insurance
- Arch MI Structured Portfolio Solutions
- RateStar Risk-Based MI Pricing Platform
- CONNECT MI Ordering and Servicing Platform
Quantifiable outcome
- 100,000+ Australian households helped achieve home ownership
- +2 more outcomes
Companies that use Arch MI
Customer profileNamed customers4 records
Segments6 records
Ideal customer profiles7 records
Arch MI technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
AI capability9 records
Feature6 records
Arch MI partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- WilqocoreStrategic integration partnership embedding Arch MI RateStar pricing capabilities into Wilqo's Charlie loan origination platform. First mortgage insurer to integrate directly with Charlie platform, providing lenders seamless access to competitive MI pricing during traditional mortgage lending process. Partnership streamlines previously disjointed loan manufacturing workflow.
Scale indicators8 records
Recent moves7 records
Expansion highlights6 records
Arch MI competitors and assessment
Company assessmentDirect peers
- MGIC Investment Corporation: MGIC is one of the largest U.S. private mortgage insurers, competing head-to-head with Arch MI for high-LTV flow MI business and GSE-eligible lender relationships. Same core product, same customer base, same regulatory framework.
- Radian Group Inc. Radian is a direct U.S. private mortgage insurance competitor with similar lender-customer focus, plus a complementary mortgage servicing business. Overlapping MI economics, distribution channels, and GSE CRT participation.
- Essent Group Ltd. Essent is a U.S. private mortgage insurer with comparable product suite (flow MI, GSE CRT issuance) and similar technology-led positioning. Direct head-to-head competitor for new insurance writing and GSE risk transfer deals.
- Enact Holdings, Inc. Enact (formerly Genworth MI) is a U.S. private mortgage insurer that competes in flow MI and bulk reinsurance. Closely comparable business model and GSE-eligible lender relationships to Arch MI.
- NMI Holdings, Inc. National MI is a U.S. private mortgage insurer focused on high-LTV flow business, competing for the same lender customers. Smaller scale than Arch MI but directly comparable product offering.
Broad incumbents
- Genworth Financial, Inc. Genworth sold its U.S. MI business to Enact but retains long-term care insurance and other businesses; previously a direct U.S. MI peer and still competes indirectly through legacy MI exposure and capital-markets activities.
- Fannie Mae: Fannie Mae is the largest buyer of Arch MI-insured mortgages and the principal counterparty for GSE CRT transactions. As a systemically important housing market participant, it shapes the regulatory and economic environment in which Arch MI operates.
- Freddie Mac: Freddie Mac is the second-largest buyer of MI-insured mortgages and runs the STACR CRT program in which Arch MI is a major participant. Counterparty and structural market-shaper for Arch MI's U.S. business.
- Arch Capital Group Ltd. Arch Capital Group (NASDAQ: ACGL) is Arch MI's publicly listed parent and ultimate owner. While not a direct competitor, ACGL provides capital allocation context and is the S&P 500-listed entity that reflects Arch MI's earnings contribution.
Regional players
- Helia Limited (formerly Genworth Mortgage Insurance Australia): Helia is a leading Australian Lenders Mortgage Insurance provider and the principal regional competitor to Arch LMI in the Australian market. Comparable LMI product and customer base in a different geography.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks5 records
Key highlights7 records
Customer concentration
Arch MI social profiles
Digital presenceArch MI financial estimates
Financial estimateRevenue estimate
Valuation estimate
Arch MI leadership team
Management profileNumber of profiles
Profiles24 records
Arch MI subsidiaries and ownership
Company hierarchySubsidiaries10 records
Arch MI funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Arch MI M&A and investment
M&A and investmentM&A1 record
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Arch MI
What does Arch MI do?
Arch MI provides mortgage guaranty insurance and mortgage credit risk management solutions to lenders in the U.S., Australia, Europe, and Bermuda. Its offerings include first-lien and second-lien residential mortgage insurance, lenders mortgage insurance in Australia, Significant Risk Transfer (SRT) and credit risk transfer solutions for European banks, non-QM loan purchases through Arch Mortgage Funding, and indemnity reinsurance via the Bellemeade Re program. Pricing is delivered through the proprietary RateStar platform, and policy ordering and servicing are handled via the CONNECT platform.
Is Arch MI a public or private company?
Arch MI is a private company. It is classified as corporate owned and is currently operating.
When was Arch MI founded?
Arch MI was founded in 2017. It employs 501 to 1,000 people.
Where is Arch MI based?
Arch MI is headquartered in Greensboro, United States, in the North America region.
How does Arch MI make money?
Six revenue lines are on record. Mortgage Insurance Premiums are the primary driver. The others are second-Lien Mortgage Insurance, non-QM Loan Purchases, significant Risk Transfer (SRT), credit Risk Transfer Advisory Services and indemnity Reinsurance (Bellemeade Program).
Who are Arch MI's main competitors?
Direct peers on record are MGIC Investment Corporation, Radian Group Inc., Essent Group Ltd., Enact Holdings, Inc. and NMI Holdings, Inc.. Broad incumbents are Genworth Financial, Inc., Fannie Mae, Freddie Mac and Arch Capital Group Ltd.. Helia Limited (formerly Genworth Mortgage Insurance Australia) is listed as a regional player.
Does Arch MI have an API?
No public API is recorded for Arch MI.
What industry is Arch MI in?
Arch MI's product category is Mortgage Insurance. Its primary akta.pro industry code is FSALAJAH, Mortgage Default Insurance & Loss Mitigation Services (Claims, Recoveries, MI Servicing), with a secondary code of FSALAFAH, Credit Risk Transfer (CRT) & Mortgage Credit Securities (CAS/STACR/ACIS). Its NAICS code is 522 and its SIC code is 6162.