US stock indices closed mixed on Thursday amid renewed bond and oil volatility. The S&P 500 and Nasdaq were near flat, while the Dow shed 162 points. The 10-year US Treasury yield topped 5.15% before retreating to around 5.1%, remaining at 2007 highs. The 30-year yield climbed to its highest level since 2004. Borrowing costs rose as oil prices increased amid heightened US-Iran tensions. However, reports suggested US and Iranian negotiators were closer to an agreement to restore tanker flows through the Strait of Hormuz. Oil trimmed gains, easing yields on shorter-dated maturities. AI hyperscalers closed mixed, with Alphabet up 1.3% and Meta adding 4.5% following positive feedback on its AI agent software and gadget releases. Microsoft shed 0.5%, while Amazon was flat. Oracle fell 3.5% after declaring force majeure over setbacks to a data center development in New Mexico. Chipmakers were also mixed amid heavy debt issuance for AI infrastructure.