US stocks finished mixed Thursday as renewed volatility in oil and government bonds pressured markets. The S&P 500 and Nasdaq ended near flat, while the Dow fell 162 points. The 10-year US Treasury yield briefly topped 5.15% before retreating to about 5.1%, keeping it around 2007 highs, while the 30-year yield reached its highest level since 2004. Borrowing costs rose alongside oil prices amid heightened US-Iran tensions, though reports said US and Iranian negotiators were closer to an agreement to restore tanker flows through the Strait of Hormuz. Oil later pared its gains, helping ease yields on shorter-dated maturities. AI hyperscalers (large firms operating AI computing infrastructure) closed mixed: Alphabet gained 1.3% and Meta rose 4.5% after positive feedback on its AI agent software and gadget releases, while Microsoft declined 0.5% and Amazon was flat. Oracle dropped 3.5% after declaring force majeure (a contractual exception for extraordinary events) over setbacks to a data center development in New Mexico. Chipmakers also finished mixed as companies continued heavy debt issuance to fund AI infrastructure.