Any list of the greatest hedge fund managers of all time should include Ken Griffin. He founded Citadel Advisors in 1990. Today, Citadel ranks among the largest and most successful hedge funds in the U.S. And Griffin is worth around $46.7 billion, making him the 31st wealthiest person in the world. Unsurprisingly, the stocks Griffin buys and sells attract the interest of many investors. Citadel recently submitted its quarterly 13F filing to the U.S. Securities and Exchange Commission. We now know that Griff ...