Jana Partners dissolved its share stake in the world's biggest gold exchange-traded fund (ETF) in the second quarter of 2016 as bullion prices rose to two-year highs, U.S. Securities and Exchange Commission filings showed on Monday.

The move came after Jana Partners, led by activist investor Barry Rosenstein, returned to gold in the first quarter along with other investors as spot gold prices saw their best quarterly performance in nearly three decades.

In the second quarter, Jana Partners dissolved the 50,000 shares of SPDR Gold Trust, the world's biggest gold ETF, that it bought in the first quarter when they were valued at $5.89 million.