M3 The category of the money supply that includes M2 as well as all large time deposits, institutional money-market funds, short-term repurchase agreements, along with other larger liquid assets. Investopedia Says: This is the broadest measure of money; it is used by economists to estimate the entire supply of money within an economy. Related Terms: Economics M0 M1 M2 Monetary Policy Money Market Fund Money Supply Narrow Money Repurchase Agreement - Repo Time Deposit |