SAN FRANCISCO—Olaf Carlson-Wee has crammed the highs and lows of a hedge-fund career into roughly one year—all before his 30th birthday. He turned $14,502 into a $150 million personal fortune by going all-in on cryptocurrencies right before bitcoin became a household name. His fund, Polychain Capital, earned investors including Silicon Valley heavyweight Andreessen Horowitz a staggering 2,303% last year, after fees—among the best showings for a billion-dollar investment firm in history—drawing comparisons to Wall Street traders...

Source: Wall Street Journal September 11, 2018 15:56 UTC