SECTOR COMMENTARYOil and gas stocks closed mostly higher outperforming the broader markets as investors took a pause amid a lack of significant market catalysts after the S&P briefly hit its highest level since December 2007.WTI crude oil finished the day with a loss of $0.50 or 0.51% to close at $97.01 and Brent oil traded flat as the weekly inventory report showed smaller-than-expected rise in crude stock piles and as investors took heart from discussions between Iran and international regulators over the country's disputed nuclear program. With futures already under ...