The FDIC assigns classification codes indicating an institution's charter type (commercial bank, savings bank, or savings association), its chartering agent (state or federal government), its Federal Reserve membership status (member or nonmember), and its primary federal regulator (state-chartered institutions are subject to both federal and state supervision). These codes are:
N National chartered commercial bank supervised by the Office of the Comptroller of the Currency
SM State charter Fed member commercial bank supervised by the Federal Reserve
NM State charter Fed nonmember commercial bank supervised by the FDIC
SA State or federal charter savings association supervised by the Office of Thrift Supervision or Office of the Comptroller of the Currency
SB State charter savings bank supervised by the FDIC
For additional notes, see http://www2.fdic.gov/hsob/HSOBNotes.asp#BF1.
Release: Failures and Assistance Transactions
Federal Deposit Insurance Corporation, Failures and Assistance Transactions of State Charter Fed Nonmember Commercial Banks Supervised by the FDIC (NM) for the United States and Other Areas [BKCCNMA641N], retrieved from FRED, Federal Reserve Bank of St. Louis https://research.stlouisfed.org/fred2/series/BKCCNMA641N, February 6, 2016.