American investor and hedge fund manager Whitney Tilson is shutting down his fund Kase Capital Management, according to Dow Jones.

Tilson is said to have notified his clients on Sunday of the hedge fund's closing.

The move comes at a time in which the hedge fund's returns on investments are lagging.

Kase, which manages roughly $50 million, down from a peak of $180 million in 2010, was down around 8% this year, Dow Jones reported. Conversely, the S&P 500 has jumped about 12% year-to-date.

Tilson is notorious for his myriad of television appearances and bold market predictions.

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