The main hedge fund at David Einhorn’s Greenlight Capital returned 1.1 percent in December as equities rallied.

The gain boosted the fund’s return to 2 percent for 2017, according to an email to clients that was seen by Bloomberg News. The fund, which mostly makes wagers on stocks, struggled to profit in a year where the S&P 500 Index returned more than 20 percent, including reinvested dividends. The HFRX Global Hedge Fund Index rose 0.7 percent in December through Thursday.

Jonathan Gasthalter, an external spokesman for the New York-based fund, declined to comment.