During trading today, both the Energy sector (XLE) and the S&P500 showed little movement.

Cobalt International Energy (CIE) was a significant gainer in the sector, rising 13.7%. The stock closed at $23.63 with 6.3 million shares moving. The stock traded in a range of $21.60 to $23.69. The stock has risen $3.43 (17%) over the last three months from a price of $20.20 on May 17, 2012. Similarly, Aegean Marine Petroleum Network (ANW) gained today, increasing 67 cents (+10.8%) to close at $6.88.

Mexco Energy Corporation (MXC) was one of the sector's big losers, as its price dropped 6.7% (-45 cents) to close at $6.30. 2,213 shares of the stock moved. The stock traded in a range of $6.30 to $6.72.

Solazyme (SZYM) rose 5.9% to close at $13.16, cross its 50-day moving average of $13.06 and 200-day moving average of $12.30. Peabody Energy (BTU) declined 3% to close at $22.28, moving below its 50-day moving average of $22.27 and 200-day moving average of $27.33.

Dawson Geophysical Company (DWSN) rose 4.2% to close at $22.65, approaching its 50-day moving average of $22.73. It has also moved closer to its 200-day moving average of $27.87. American Midstream Partners (AMID) fell 1.5% to close at $21, moving down to 1.7% above its 200-day moving average of $20.64.

Western Refining (WNR) hit a new 52-week high today, reaching $27.29 to top the previous high of $26.91.