U.S. stocks ended modestly higher Wednesday as long-term Treasury yields fell sharply. The S&P 500 rose 16.22 points, or 0.21%, to 7,707.98, ending a three-session losing streak. The Dow Jones Industrial Average gained 119.65 points, or 0.22%, to close at 53,463.05. The Nasdaq Composite added 41.38 points, or 0.16%, finishing at 26,331.09. Falling government bond yields helped major indexes recover after several sessions of pressure from rising borrowing costs. Bond prices climbed after the U.S. Treasury Department announced larger liquidity support buybacks for longer-dated government debt. Treasury yields moved lower following the announcement, reversing part of a recent rise in long-term borrowing costs. The 10-year Treasury yield fell to about 4.65%, while the 30-year yield declined to about 5.20%. Bond yields move inversely to prices, so stronger demand for government debt pushed yields lower. The retreat eased pressure that had accompanied the recent selloff in longer-term government bonds.