<p class="ingestion featured-caption">Hedge fund billionaire Ken Griffin. REUTERS/Lucy Nicholson</p><ul class="summary-list"><li>Ken Griffin recently bought a $90 million waterfront estate in St Tropez.</li><li>Griffin currently has a net worth of $41.8 billion, per the Bloomberg Billionaires Index.</li></ul><p><a target="_blank" class href="https://www.businessinsider.com/ken-griffin-citadel-florida-desantis-politics-hedge-fund-2022-12">Billionaire hedge fund founder Ken Griffin</a> has broken records for some of his purchases — from previously buying the most expensive property in Miami history to acquiring a stegosaurus skeleton that made for the most valuable fossil to sell at auction.</p><p>The Citadel boss is currently the world's 33rd richest person, with a net worth of $41.8 billion, according to the <a target="_blank" href="https://www.bloomberg.com/billionaires/profiles/kenneth-c-griffin/">Bloomberg Billionaires Index</a>. </p><p>Some of his fortune was recently spent on a waterfront estate worth over $90 million in the highly exclusive St. Tropez, according to a Wall Street Journal <a target="_blank" class href="https://www.wsj.com/real-estate/luxury-homes/ken-griffin-makes-another-major-real-estate-play-this-time-in-st-tropez-d6ed0173">report</a>. </p><p>Griffin is also a high-profile philanthropist. A spokesperson for Griffin said he has donated over $2 billion to education, opportunity, and health science initiatives. </p><p>Here are some of his more unusual and extravagant purchases:</p>