Ken Griffin's position in SSgA Active Trust - SPDR S&P 500 ETF Trust is currently worth $48.9 Billion. It makes up 50.25% of their stock portfolio and is their biggest holding. The investor owns 45146.19% of the outstanding SSgA Active Trust - SPDR S&P 500 ETF Trust stock. The first SSgA Active Trust - SPDR S&P 500 ETF Trust trade was made in Q1 2014. Since then Ken Griffin bought shares 48 more times and sold shares on 48 occasions. The stake costed the investor $32.4 Billion, netting the investor a gain of 51% so far.