Mark Kingdon is the Founder of Quixotic Ventures, a Miami-based firm where he serves as an early-stage angel. See portfolio, sector focus and contact routes.
Mark Kingdon is the Founder of Quixotic Ventures, a Miami-based firm where he serves as an early-stage angel investor after a career as a three-time tech CEO and former strategy consultant at a top firm and Idealab[3][4]. His investment thesis targets early-stage consumer internet companies, with a specific focus on e-commerce and e-commerce enablement across the United States[3][12]. Kingdon typically invests personal capital as an angel, having made over 26 to 30 investments since starting in 2005 or 2006[1][3][8]. Notable portfolio companies include Twitter, OfferUp, TheRealReal, and HomeLight, with four of his investments achieving valuations over $1 billion[3][4]. He describes himself as a top-performing angel investor whose portfolio has generated $34 billion in value creation and a 16x return to date[3]. Kingdon maintains a public blog on his website and serves as the Board Chair of Miami Angels, a group of 150 investors focused on Miami startups[3][5].
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