US stocks opened modestly higher on Friday, with the Dow Jones Industrial Average up 48.7 points, or 0.09%, to 51,826.78, the S&P 500 up 19.4 points, or 0.25%, to 7,657.17, and the Nasdaq Composite up 103.8 points, or 0.39%, to 26,522.09. The gains extended Thursday's rebound as lower oil prices eased inflation concerns, though the 10-year Treasury yield moved back toward 5%, maintaining pressure on equity valuations. Brent crude traded near $104 a barrel after fears of major Saudi supply disruptions eased. Investors continued to assess the Federal Reserve's rate increase, technology-sector risks, next week's meeting between US President Donald Trump and Chinese President Xi Jinping, and Friday's quarterly derivatives expiry. Berkshire Hathaway said Warren Buffett would immediately become chairman emeritus, while Xenon Pharmaceuticals paused enrollment in depression-drug trials after reported side effects.