Natural-gas futures extended their gains on Thursday after the U.S. Energy Information Administration reported that domestic supplies of natural gas rose by 20 billion cubic feet for the week ended Aug. 27. That matched the average increase forecast by analysts polled by S&P Global Platts. Total stocks now stand at 2.871 trillion cubic feet, down 579 billion cubic feet from a year ago and 222 billion cubic feet below the five-year average, the government said. Following the data, October natural gas was up 6.5 cents, or 1.4%, at $4.68 per million British thermal units. Prices were at $4.629 shortly before the data.

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