(Bloomberg) — Billionaire George Soros isn't waiting around to see if this year's surge in gold-mining shares will last.

Soros Fund Management, which took a $263.7 million stake in Barrick Gold in the first quarter, cut its holdings in the world's biggest producer of the metal by 94% in the ensuing three months, a U.S. regulatory filing showed Monday. After climbing 169% in the first half, its best-ever performance for the period, Barrick shares have slipped from a three-year high reached last month.

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