U.S. stock futures fell Wednesday after the major averages kick-started September lower, with the S&P 500 clocking its worst day since early August. S&P 500 futures and Nasdaq-100 futures dipped 0.5% and 0.3%, respectively. Dow Jones Industrial Average futures slid declined 30 points, or about 0.1%. Nvidia shares fell 1.4% in the premarket after a Bloomberg report, citing sources familiar, said the U.S. Justice Department sent subpoenas to the chipmaker. The move comes after Nvidia tumbled more than 9% in Tuesday’s session amid a broader pullback in semiconductor stocks. Wall Street is coming off a losing session, with the major benchmarks posting their worst day going back to the Aug. 5th sell-off, as chip names came under pressure and the latest economic data implied slowing growth for the U.S. economy. The 30-stock Dow fell more than 600 points, or 1.5%, while the S&P 500 slid 2.1%. The Nasdaq Composite dropped 3.3%. Traders are bracing for more volatility in September, historically a weak month for equities. Many investors anticipate a pullback of 5% or more in the coming weeks, although some money managers view any decline as a buying opportunity. “The next eight weeks should be a prime, a very prime opportunity, to rebalance your portfolio, get more diversified, and actually let the market activity go in your favor,” Chris Hyzy, investment chief at Merrill and Bank of America Private Bank, said on CNBC’s “Closing Bell” on Tuesday. Corporate earnings season is largely behind investors, with Hewlett Packard Enterprise is set to post earnings after the close. Dollar Tree shed 12% before the bell after slashing its guidance. Traders will also look to the latest releases on job openings and labor turnover (JOLTS) survey, and factory orders data. U.S. Treasury yields were lower on Wednesday as investors assessed the outlook for the economy after the latest economic data releases. The 10-year Treasury was down by a basis point to 3.835%. The 2-year Treasury pulled back by roughly 4 basis points to 3.851%. Asia-Pacific markets plunged on Wednesday, led by Nikkei 225 and Taiwan’s Taiex after U.S. tech stocks sold off and weak U.S. economic data sparked recession fears. Japan’s Nikkei 225 fell 4.24% to close at 37,047.61, while the broad-based Topix dropped 3.65% to 2,633.49. Both indexes saw their worst one-day loss since the Aug. 5 sell-off. South Korea’s Kospi lost 3.15%, ending at 2,580.8, while the small cap Kosdaq dropped 3.76% loss to close at 731.75.  The Taiwan Weighted Index dropped 4.52%, leading losses in Asia and finishing at 21,092.75, with heavyweights Taiwan Semiconductor Manufacturing Company down 5.21% and Hon Hai Precision Industry — known internationally as Foxconn — falling 3.51%. The index lost as much as 5.29% in early trade, before recovering to current levels. Australia’s S&P/ASX 200 lost 1.88% to 7,950.5, mainly dragged by a weakness in oil prices. Hong Kong’s Hang Seng index was down 1.26% as of its final hour, while mainland China’s CSI 300 dropped 0.63% to hit a new seven-month low. Oil prices extended declines during Asia trading hours, after a report that Libya’s oil production was set to be restored pressured prices overnight. OPEC+ plans to raise output amid weakness in China’s economy have also been dragging prices lower. Global benchmark Brent slipped 0.57% to $73.33 a barrel, while U.S. West Texas Intermediate futures fell 0.65% to trade at $69.88 per barrel. Gold prices extended declines to a two-week low on Wednesday as a sharp sell-off in equities forced a rush to cover margin calls, adding pressure on bullion ahead of keenly awaited non-farm payrolls data due later this week. Spot gold fell 0.8% to $2,473.50 per ounce, having hit its lowest since Aug. 22. U.S. gold futures dipped 0.7% to $2,505.40. “Gold is under some light pressure this morning in the face of equities’ weakness– this is normal as there may be some selling in case of equity-related margin calls,” said StoneX analyst Rhona O’Connell.