The stock market opened distinctly higher after the surprise decline in July PPI. Disney's (DIS 121.16, +8.76, +7.7%) favorable earnings report is also boosting sentiment.Mega caps and growth stocks, which drove the market higher yesterday, are somewhat softer at the open. The Vanguard Mega Cap Growth ETF (MGK) trades in line with the S&P 500, up 0.7%, versus a 1.1% gain in the Invesco S&P 500 Equal Weight ETF (RSP). The Russell 3000 Value Index (+0.8%) is outpacing the Russell 3000 Growth Index (+0.5%).With broad-based buying interest, every S&P 500 sector trades in positive territory with gains ranging from 0.1% (health care) to 2.0% (energy). Top performer, energy, is getting a boost from the continued rise in oil prices this morning. WTI crude oil futures are up 1.5% to $93.31/bbl.