U.S. stock futures slipped and Treasurys weakened in early European trade as higher oil prices pressured market sentiment before investors returned from the Labor Day weekend. The yen approached its strongest level against the dollar in 2026, extending a recent rally linked to rising expectations for higher Bank of Japan rates and a softer dollar. In Asian trading on Tuesday, the currency reached a fresh six-month high against the greenback, moving beyond levels recorded after coordinated U.S.-Japan market intervention in July.