Over the last decade, through a series of successful moves, Icahn has become the sole force behind Icahn Enterprises LP, a diversified holding company that puts him in command of roughly $24 billion in capital. “As essentially the wealthiest individual hedge-fund manager of all time, he is in an extremely rare position,” explains Brown. “Nobody can tell him what to do or what not to do.” … “Tech companies have gotten away for far too long with far too much cash on their balance sheets,” says Kedrosky. “I applaud Carl for forcing people to think hard about why they are carrying so much, and for pushing them to return some of it to investors.”