Label	Description
Date					monthly, last business day of month
U.S. Government security repo (millions)	U.S. prime money market funds investment holdings of U.S. Government security repurchase agreements	millions of dollars
Other repo (millions)	 		U.S. prime money market funds investment holdings of other security repurchase agreements 	millions of dollars
Certificates of deposit (millions)  	U.S. prime money market funds investment holdings of certificates of deposit	millions of dollars
Unsecured commercial paper (millions)  	U.S. prime money market funds investment holdings of unsecured commercial paper	millions of dollars
Asset-backed commercial paper (millions)  U.S. prime money market funds investment holdings of asset-backed commercial paper	millions of dollars
Other instruments (millions)  		U.S. prime money market funds investment holdings of other instruments	millions of dollars