Enact Holdings, Inc. operates principally through its wholly owned subsidiary, Enact Mortgage Insurance Corporation, a private mortgage insurance provider. The Company is engaged in the business of writing and assuming residential mortgage guaranty insurance. The insurance protects lenders and investors against certain losses resulting from nonpayment of loans secured by mortgages, deeds of trust, or other instruments constituting a lien on residential real estate. It facilitates the sale of mortgages to the secondary market, including to private investors, as well as the Federal National Mortgage Association (Fannie Mae) and the Federal Home Loan Mortgage Corporation (Freddie Mac). It has a diverse customer base and maintains enduring relationships across the mortgage origination market, including with national banks, non-bank mortgage lenders, local mortgage bankers, community banks and credit unions. Fannie Mae and Freddie Mac are government-sponsored enterprises.