JAM Fund is a venture capital firm led by sole GP and Tinder co-founder Justin Mateen. Fund I was $100M, and Fund II was $329M. Mateen often invests personal capital first, then backs the winners at every stage with JAM Fund and personal capital side by side. He is known for backing founders with a chip on their shoulders and taking a contrarian approach. His broader investment track record spans consumer, fintech, and frontier categories such as space manufacturing, nuclear energy, and AI infrastructure.
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