Ken Griffin's position in Vanguard Group - Vanguard S&P 500 ETF is currently worth $28.2 Million. That's 0.03% of their equity portfolio (643rd largest holding). The investor owns 3.20% of the outstanding Vanguard Group - Vanguard S&P 500 ETF stock. The first Vanguard Group - Vanguard S&P 500 ETF trade was made in Q2 2014. Since then Ken Griffin bought shares 41 more times and sold shares on 34 occasions. The stake costed the investor $24.3 Million, netting the investor a gain of 16% so far.