(Bloomberg) -- MicroStrategy Inc. chairman and co-founder Michael Saylor placed one of his biggest bets yet, with the enterprise-software maker turned Bitcoin investment-fund proxy purchasing $593.3 million more of the largest cryptocurrency. Most Read from BloombergSaudi Arabia Offers Iran Investment to Blunt Gaza WarThese Are the World's Most Expensive Cities to Live In Right NowBiggest Blowout in Bonds Since the 1980s Sparks Everything RallyKissinger, Diplomat Who Defined US Foreign Policy, D