John William Henry II (born September 13, 1949) is a futures and foreign exchange trading advisor who founded John W. Henry & Company (JWH). He is the principal owner of the Boston Red Sox and co-owner of Roush Fenway Racing. In March 2006, Boston Magazine estimated his net worth at $860 million, but noted that his company had recently experienced difficulties. In May 2007, reports in the Wall Street Journal and Bloomberg noted further difficulties with the firm.