During trading today, the S&P 500 dropped 1%, and the Energy sector (XLE) showed little change.

Walter Energy (WLT) was one of the sector's big losers, as its price dropped 9.9% (-$4.54) to close at $41.12. 6.5 million shares of the stock moved. The stock traded between $40.85 and $44.95.

WSP Holdings (WH) was a significant gainer in the sector, rising 8.8%. The stock closed at $1.49 with 5,870 shares moving. The stock traded in a range of $1.32 to $1.49. Over the last two months, shares have shown some positive movement as the price has climbed 30 cents (25.4%) from a price of $1.19 on May 8, 2012.

Apco Oil & Gas International (APAGF) fell 6.2% to close at $21.08, crossing its 50-day moving average of $21.27. Meanwhile, Penn Virginia Resource Partners L P (PVR) climbed 1.2% to close at $24.80, moving past its 200-day moving average of $24.60.

Petrobras Argentina SA ADR (PZE) rose 1.5% to close at $8.14, approaching its 50-day moving average of $8.33. It has also moved closer to its 200-day moving average of $11.57. Peabody Energy (CVX) fell 4.9% to close at $24.86, moving closer to its 50-day moving average of $24.25. Also, the stock moved closer to its 200-day moving average of $103.99.