Economic Definition of OMO. Defined.
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Term OMO Definition: The abbreviation for open market operations, which is the Federal Reserve System's buying and selling of government securities in an effort to alter bank reserves and subsequently the nation's money supply. These actions, under the direction of the Federal Open Market Committee, are the Fed's number one, most effective, most often used tool of monetary policy. If, for example, the Fed wants to increase the money supply (termed easy money) it buy's government securities. If the Fed chooses to reduce the money supply (called tight money) it sells some government securities.