U.S. stock futures extended recent losses on Sept. 1 as elevated Treasury yields, higher oil prices and renewed Middle East clashes pressured investor sentiment at the start of September, historically the weakest month for equities. Dow and S&P 500 futures each fell 0.48%, while Nasdaq 100 futures dropped 0.83% at 4:46 a.m. ET. The selloff in U.S. Treasuries pushed yields to their highest levels in months, making risk-free assets more attractive relative to equities and strengthening expectations for higher interest rates. Investors awaited the Labor Department's JOLTS report (job openings and labor turnover survey) for signals about the labor market ahead of Friday's nonfarm payrolls report. Robinhood rose 2.5% after Morgan Stanley upgraded the stock, while Hut 8 gained 1.77% after reports that it would develop a data center under a cloud deal involving Anthropic and Lambda. Energy stocks also advanced after Brent crude rose 1.86%, with Exxon Mobil and Devon Energy each gaining more than 1%.