During trading today, the S&P 500 dropped 0.7%, and the Energy sector (XLE) showed little change.

The ETF, as a proxy for the sector, tracked closer to the overall market today than over the past month. As trading began today, XLE was up 1.2% over the last thirty trading days, and the S&P 500 climbed 2.1%.

Zion Oil & Gas (ZN) was a major gainer in the sector, rising 9.8% (+22 cents) to close at $2.47 with 232,729 shares moving. The stock traded in a range of $2.20 to $2.50.

Pioneer Natural Res (PXD) declined 2.4% to close at $96.14, moving below its 50-day moving average of $94.49 and 200-day moving average of $97.55.

Oil States International (FTI) fell 2.7% to close at $76.77, moving closer to its 50-day moving average of $76.18. Also, the stock moved closer to its 200-day moving average of $45.61. Union Drilling (UDRL) rose 1.9% to close at $4.28, moving closer to its 50-day moving average of $4.29.

InterOil Corporation (IOC) was one of the sector's big losers, as its price dropped 4.6% (-$3.86) to close at $79.49. 473,652 shares of the stock moved. The stock traded between $78.61 and $83.28. Shares have been on on the rise over the past three months, climbing $8.95 (10.1%) from a price of $88.44 on August 1, 2012.

Marathon Petroleum (MPC) hit a new 52-week high today, reaching $50.99 to top the previous high of $50.79.