When cold weather looms across the U.S., natural-gas prices usually rise. This year they are falling, after a record production boom nearly replenished stockpiles left at their lowest since 2003 by last winter’s epic freeze. Prices for the fuel used to heat half of American homes fell to their lowest point of 2014 on Friday in intraday trading and are down 9.3% since Sept. 29 on speculation that further supply additions could lead to a glut. On Friday, the November contract settled down 3 cents, or 0.8%, to $3.766 a million British thermal units on the New York Mercantile Exchange. It was the lowest close since July 28. With the November chill only a few weeks away, money managers have cut bets on rising natural-gas futures […]