George Soros's position in SSgA Active Trust - SPDR S&P 500 ETF Trust is currently worth $876M. That's 10.11% of their entire equity portfolio (2nd largest holding). The first SSgA Active Trust - SPDR S&P 500 ETF Trust trade was made in Q4 2004. Since then George Soros bought shares 77 more times and sold shares on 68 occasions. The stake costed the investor $691M, netting the investor a gain of 27% so far.