Central banks lift stocks

bull rally gliding upwards

Investors should say thanks to Janet Yellen & Co at the Federal Reserve.

Risky assets like stocks continued to be carried higher by the Fed's favorable monetary policies.

While the central bank ended its bond-buying stimulus program in October, it soothed investor concerns by signaling it will be very patient about any interest rate increases in 2015.

First published December 31, 2014: 4:47 PM ET

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