Natural-gas prices are posting some of their largest daily losses of the past month on Thursday after data showed a storage addition last week far beyond expectations. The U.S. Energy Information Administration said natural-gas stockpiles grew by 51 billion cubic feet last week, compared to the 43 bcf expected by forecasters surveyed by The Wall Street Journal. The report is a widely watched measure of supply and demand. A larger-than-expected addition to storage likely indicates greater supply or smaller-than-expected demand. Losses had been mounting throughout the morning and doubled after the EIA’s report. Futures for October delivery recently fell 8.9 cents, or 3.1%, to $2.798 a million British thermal units on the New York Mercantile Exchange. Prices are at intraday lows for the past week. “All of a sudden it’s Labor Day and the market realizes the heat’s going away,” said Teri Viswanath, managing director, natural gas, at PIRA […]