(Reuters) - U.S. stocks opened higher on Wednesday after Apple’s strong earnings boosted technology companies and helped ease concerns over future growth of the tech sector.The Dow Jones Industrial Average .DJI rose 46.44 points, or 0.18 percent, at the open to 25,461.63. The S&P 500 .SPX opened higher by 4.88 points, or 0.17 percent, at 2,821.17. The Nasdaq Composite .IXIC gained 30.03 points, or 0.39 percent, to 7,701.82 at the opening bell.