Coupon Pass: $1,375m Monetary policy can be implemented through outright purchases or sales of securities, which permanently changes the size of the Federal Reserve's System Open Market Account (SOMA) portfolio. <A HREF="http://www.ny.frb.org/markets/pomo/display/index.cfm" target="_blank">http://www.ny.frb.org/markets/pomo/display/index.cfm</A>