The Fed announced it will extend Operation Twist, which was set to expire at month's end, until the end of 2012, in an effort to keep interest rates low.
The Fed will expand Operation Twist, which replaces short-term bonds with longer-term debt, by $267 billion.
In a statement, the FOMC said the prolongation of Operation Twist "should put downward pressure on longer-term interest rates and help make broader financial conditions more accommodative."
The Fed pointed to the U.S. economy's poor recovery as reason for more "twist."
"Growth in employment has slowed in recent months and the unemployment rate remains elevated," the Fed reported. "Household spending appears to be rising at a slower pace than earlier in the year."
The lack of more intense stimulus, namely a third round of quantitative easing, sent the Dow Jones, which had been flat all day, plummeting some 50 points in just seconds. All three major indexes treaded lower following the report. Gold, hoping for QE3, sold off some $25 an ounce.
The yield on the 10-year Treasury note rose to 1.67% just after 1 p.m. in New York from 1.62% late yesterday.