NMI Holdings, Inc. provides mortgage insurance (MI) through its wholly owned insurance subsidiaries, National Mortgage Insurance Corporation (NMIC) and National Mortgage Reinsurance Inc One (Re One). NMIC is its primary insurance subsidiary, which provides mortgage insurance. The Company's subsidiary, NMI Services, Inc. (NMIS), provides outsourced loan review services to mortgage loan originators. The Company has issued master policies with approximately 1,875 customers, including national and regional mortgage banks, money center banks, credit unions, community banks, builder-owned mortgage lenders, Internet-sourced lenders and other non-bank lenders. The Company offers two principal types of MI coverage, which include primary and pool. Primary MI provides default protection on individual mortgage loans at specified coverage percentages. Pool insurance is generally used to provide additional credit enhancements for certain secondary market mortgage transactions.