A Florida man has invested a vast fortune in the Florida-based technology company he launched almost 30 years ago. Charles “Chuck” Coates announced in September that he bought a small stake in Olin Corp., a company with roughly a billion dollars worth of assets. Olin had been the focus of an antitrust lawsuit for nearly 25 years, after its then president, Richard J. White, was accused by a judge of conspiring to use Olin to sell shares to investors to fund White’s own legal and political pursuits. The suits were later dropped. Mr. Coates didn’t immediately give a specific value for his investment, but he said in a statement last week that he’s still “actively engaged” in Olin.