Hedge funds and other large speculators held a net 17,692 bullish positions in U.S. government bonds in the week to Oct. 13, from 2,543 net bearish contracts in the previous period. Ten-year Treasuries advanced on Monday, sending yields down closer to the 1.97 percent they reached on Oct. 14, the lowest close since April 27. U.S. debt has rallied over the past month as bets receded that the Federal Reserve will...