David Einhorn's more than $8 billion hedge fund, Greenlight Capital, gained 0.3 percent in February, according to sources familiar with the matter.
The fund has gained 3.6 percent for the year.
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Einhorn's February results come as the outspoken manager has been pushing technology company Apple Inc to return some of its cash stockpile to investors in a form of preferred stock. Greenlight owns roughly 1.3 million shares of Apple, one of the hedge fund's largest positions.
Apple shares have dropped roughly 3 percent since Einhorn went activist on stock in early February.
In the month of February, the Standard & Poor's 500 stock index rose 1.1 percent.
(Reporting by Katya Wachtel; Editing by Lisa Von Ahn)