George Soros’s hedge fund Soros Fund Management sold its stake in a widely used gold exchange-traded fund in the third quarter, according to a regulatory filing out Monday. The fund reported no stake in the SPDR Gold Trust GLD, +0.58%  in the period ended Sept. 30. That’s after disclosing a position worth $30.4 million in a second-quarter filing. The storied billionaire investor had attracted attention during the second quarter for being generally bearish on world markets — and scooping up safety-play gold.