Leon G. Cooperman’s Omega Advisors has a portfolio that was worth $6.46 billion at the end of March, according to the firm’s latest 13F filing with the Securities and Exchange Commission. During the first quarter of the year, the firm bought 20 new stocks and increased its position in 30 others. It also exited 15 stocks and reduced its position in 11 others.

Omega Advisors

The firm’s top 10 holdings make up for 38 percent of its portfolio. As of the end of March, the firm’s five top holdings were Sprint Nextel Corporation (NYSE:S), SLM Corp (NASDAQ:SLM), American International Group Inc (NYSE:AIG), Linn Energy LLC (NASDAQ:LINE) and Sirius XM Radio Inc (NASDAQ:SIRI).

Omega Advisors’ Major New Purchases

SUPERVALU INC. (NYSE:SVU) was the firm’s largest new purchase, with 6.9 million shares. Other major new stocks for the firm were Occidental Petroleum Corporation (NYSE:OXY), Electronic Arts Inc. (NASDAQ:EA) and Time Warner Cable Inc (NYSE:TWC).

Major Position Increases

Sprint Nextel Corporation (NYSE:S) continues to be a major part of the firm’s portfolio, jumping from 5.83 percent to 6.27 percent of its value at the end of the first quarter. The firm bought more than 9.2 million shares of the stock between January and March.

Other major increases for the firm were Chimera Investment Corporation (NYSE:CIM), in which it increased its position by 121 percent, and Polycom Inc (NASDAQ:PLCM), in which it raised its holdings by 73 percent.

The firm also increased its holdings in Newcastle Investment Corp. (NYSE:NCT) by more than 1,000 percent during the first three months of the year. Other big increases were Citigroup Inc (NYSE:C), Merck & Co., Inc. (NYSE:MRK), QUALCOMM, Inc. (NASDAQ:QCOM), Capital One Financial Corp. (NYSE:COF) and Facebook Inc (NASDAQ:FB).

Omega Advisors’ Major Sell-Outs

The firm sold off 4.3 million shares of The Western Union Company (NYSE:WU) and 2.4 million shares of TiVo Inc. (NASDAQ:TIVO). Other major sell-offs during the first quarter were Humana Inc (NYSE:HUM), WellPoint, Inc. (NYSE:WLP) and Family Dollar Stores, Inc. (NYSE:FDO).

Major Position Decreases

During the first quarter, Omega Advisors reduced its position in DISH Network Corp (NASDAQ:DISH), Google Inc (NASDAQ:GOOG) and Atlas Resource Partners, L.P. (NYSE:ARP).