I don't know who that wallet belongs to but I looked at the address in etherscan. The first transaction was on august 20, 2016, the address accumulates thousands of ether day by day and at that time ether was at $10 each and continued that until march 17, 2017 at that time ether was at around $45 each. He had accumulated 1,538,422.730283013 Ether. Though he bought those ether at really low price he must be very rich because he had 10,000 ether transactions and that is $100,000 and then buy again at some other time.