Stock futures fell on Wednesday as rising oil prices continued to rattle investors by stoking fears of higher inflation. Dow Jones Industrial Average futures dropped 404 points, or 0.8%. The S&P 500 shed 0.5%, while Nasdaq-100 futures fell 0.7%. The Dow dropped 1.2% on Tuesday, marking its worst day in almost three weeks. The S&P 500 and Nasdaq Composite slid 0.6% and 0.3%, respectively. The 10-year U.S. Treasury yield briefly climbed above the closely watched 4.8% level on Tuesday as rising oil prices added to concerns about inflation. The action in yields further weighed down stocks in the session. It’s “a little bit of a speed bump,” said Kara Murphy, investment chief at Kestra Investment Management, on CNBC’s “Closing Bell.” “There’s a little bit less to focus on with the earnings front, so I think the market has sort of shifted its attention now to the risk side.” In Asia, Japan’s Nikkei 225 closed 0.19% lower, while South Korea’s Kospi rose 1.40%. Australia’s benchmark S&P/ASX 200 fell 0.11%. Mainland China’s CSI 300 closed 0.30% higher. Oil prices rose as escalating tensions between the U.S. and Iran fueled concerns over further disruptions to Middle East energy supplies. Futures for Brent crude, the international benchmark, added more than 2% to break $100 a barrel for the first time since July. The latest rise in oil extends the gain from the prior trading day, which put downward pressure on the three major averages in their first session of a holiday-shortened trading week. The stock market was dark on Monday in observance of the Labor Day holiday. Gold climbed on Wednesday, supported by a ​softer U.S. dollar, while ​investors weighed price ​pressures from renewed attacks in the Middle East and awaited key inflation data for clues on the Federal Reserve’s policy outlook. Spot gold rose 1.1% to $4,401.09 per ounce by ⁠0825 GMT, ‌while U.S. gold futures for December delivery gained 0.1% ⁠to $4,445.10. The U.S. dollar softened, making greenback-priced bullion more affordable for buyers overseas.