A trader works on the floor of the New York Stock Exchange (NYSE) in New York, U.S. (Photographer: Jeenah Moon/Bloomberg)

Here's Why U.S. Bond Yields Plunged So Much Over the Past Week

(Bloomberg) -- The Federal Reserve’s surprise policy shift last week shook markets, but, even still, the intensity of the ensuing drop in U.S. bond yields has puzzled many observers. A massive wave...