By Joseph Checkler Of DOW JONES NEWSWIRES NEW YORK -(Dow Jones)- BP Capital, the hedge-fund firm run by billionaire energy investor T. Boone Pickens, bought more than one million shares of Sandridge Energy Inc. (SD) during the third quarter, according to a regulatory filing made Monday morning. BP reported 14 different stakes totaling about $185 million, which represents five more positions and $100 million more than on its end-of-second-quarter holdings report. The filing, made on Securities and Exchange Commission form 13-F, showed that BP Capital also bought one million shares of McMoRan Exploration Co. (MMR), a new position. The firm added to existing positions in several stocks, including Chesapeake Energy Corp. (CHK), and Devon Energy Corp. (DVN), and took a new one in Hess Corp. (HES). A BP Capital spokesman didn't immediately return a message seeking comment. Many investors that manage more than $100 million are required to file 13-Fs describing their stock holdings within 45 days of the end of a given quarter, giving the public its freshest possible glimpse into the portfolios of well-known money managers. Most hedge-fund managers and others wait until the last possible moment to make these filings. The third quarter's deadline is Monday. -By Joseph Checkler, Dow Jones Newswires; 212-416-2152; joseph.checkler@dowjones.com