The hedge fund co-founded by Bill and Hillary Clinton’s son-in-law suffered losses tied to an ill-timed bet on Greece’s economic recovery, according to documents reviewed by The Wall Street Journal.

Eaglevale Partners, founded by Marc Mezvinsky and two former colleagues from Goldman Sachs, told investors in a letter sent last week they had been "incorrect" on Greece, helping produce losses for the firm's main fund during two of the past three years, according to the letter. Mezvinsky married Chelsea Clinton, the former first daughter, in 2010.