Alexander Soros, the 37-year-old son of legendary investor George Soros, has taken over the reins of his father's empire in what is seen as a 180-degree departure from his previous playboy image. He also sits on the investment committee of Soros Fund Management, which has assets worth $25 billion, the Wall Street Journal reported. Alexander — who goes by Alex — is now at the helm of George Soros' Open Society Foundations, or OSF, where he plans to continue supporting causes his father championed, such as voting and abortion rights, the Wall Street Journal reported on Sunday.