The Form 13F for T. Boone Pickens hedge fund BP Capital shows them buying about 180,000 shares of Bonanza Creek Energy (BCEI) during the 2nd quarter. The stock is up over 150% since shortly after becoming publicly traded in December 2011.
Source: Billionaire T. Boone Pickens' Top Energy Picks
The Form 13F also shows that BP Capital holds CXO, EOG, GST, GPOR, RRC, SM and WLL.
Their 1,138,859 shares of GST really caught my eye.