Steve Cohen Is Back: 4 Interesting Facts About The Hedge-Fund Billionaire By: Benzinga via Benzinga May 31, 2017 at 12:30 PM EDT Hedge-fund billionaire Steve Cohen is returning to his trading roots after being involved in one of the biggest insider trading ... Read More >> Related Stocks: Dow Industrials SPDR PowerShares QQQ SPDR S&P 500 ETF Trust Standard & Poors 500