Enact Holdings, Inc. (ACT)

Enact Holdings is the primary private mortgage insurance company in the United States. Spun out of Genworth Financial in 2021, the company underwrites residential mortgage guaranty insurance—essentially betting that borrowers won’t default on their loans. Banks and lenders buy this insurance to mitigate credit risk and meet regulatory capital requirements on loans where borrowers put down less than 20 percent.

The mortgage insurance business is fundamentally countercyclical. Premium volume grows when housing starts heat up and originations spike, but losses mount when interest rates rise or employment cracks. Enact operates in that middle ground, collecting premiums on healthy loans while maintaining capital reserves for the inevitable downturn. The company also writes pool insurance (covering aggregated loan portfolios) and handles contract underwriting—doing the loan-level risk assessment that lenders outsource.

Enact’s competitive position rests on scale, technology, and pricing discipline. It remains closely tied to Genworth through shared management infrastructure and strategic positioning. Like other mortgage insurers, Enact faces persistent pressure: rising rates compress originations, stricter capital requirements eat into margins, and the shift toward larger down payments and non-QM lending channels erodes the borrower population it traditionally serves. Still, the multillion-dollar mortgage market ensures steady demand for default protection, particularly in economic stress.

The company’s earnings depend almost entirely on premiums earned minus claim reserves and operating costs. The bulk of revenue flows from single-premium and periodic-premium mortgage insurance written on conforming, bank-qualified loans. Risk management is done through reinsurance partnerships and capital retention, letting Enact maintain leverage while ceding losses to third parties above certain thresholds.