US bonds gain as gold, silver, oil prices fall By: CNBC.com News December 01, 2014 at 06:08 AM EST U.S. sovereign bonds prices gained on Monday, with the "safe haven" bid boosted by further declines in commodity prices and a cut to Japan's rating. Read More >> Related Stocks: HSBC HOLDING PLC 8.125 ERPETUAL CAPITAL SECURITIES Moody's Corp