US Stocks Wobble as Crude Spike Lifts Bond Yields

US equity benchmarks traded defensively on the final session of August as a sharp rally in crude oil prices fed through into higher Treasury yields, tightening the discount rate applied to equity valuations. Rate-sensitive sectors bore the brunt of the selling as bond markets repriced.

Energy stocks were the standout outperformer, tracking the move in crude, while utilities lagged sharply as higher yields eroded the appeal of income-generating equities. The rotation highlights how commodity-driven inflation expectations are reshaping sector leadership within the broader index.

With yields climbing, traders are watching whether the move extends into September, a period historically associated with weaker seasonal performance for US large-cap stocks.