Invesco QQQ Trust

Ken Griffin has made big bucks primarily from picking stocks for his Citadel Advisors hedge fund. His net worth stands at roughly $43 billion. Big bucks indeed.However, Griffin's fortune doesn't stem exclusively from investing in…

For most fans of exchange-traded funds (ETFs), the iShares Russell 1000 Growth ETF (NYSEMKT: IWF) isn't exactly in the middle of their investment radars. The $90 billion fund just isn't as popular as options like the SPDR S&P 500 ETF…