Stocks opened higher and strengthened in Wednesday’s early going amid mixed economic data. The Nasdaq led the pack with a 1% gain while the S&P 500 climbed 0.7%. The Dow Jones industrial average lagged with a 0.3% gain, hurt by Walt Disney (DIS), which slumped 9% on late Tuesday’s revenue miss. Volume was running higher across the board in the stock market today compared with the same time Tuesday.