Koko Xs: The 21-Year-Old Solo VC Disrupting Deep Tech Investing
At just 21 years old, Koko Xs has emerged as one of venture capital’s most intriguing new players. The young investor has already secured $17.5 million for his debut solo fund, backed by industry heavyweights including Marc Andreessen, Chris Dixon, and Lux Capital. His rapid rise challenges conventional wisdom about what it takes to succeed in VC.
From Math Major to Venture Capitalist
Xs’s journey began unconventionally. After graduating from NYU with a math degree, he initially planned to pursue a PhD and commercialize his own technology. His proactive approach—cold-emailing 3,000 PhDs—led to a fateful connection with Lux Capital’s Brandon Reeves. This serendipitous meeting landed Xs a summer associate position at the prominent deep tech firm.
“He was the first professional startup person I met,” Xs recalls about Reeves. The Lux experience proved formative, exposing him to cutting-edge technologies and investment strategies.
The Fast Track to VC Success
Xs’s career trajectory accelerated rapidly:
- Early Investments: Backed defense tech standout Mach Industries and AI chip maker Etched using $140,000 in personal savings
- Operational Experience: Served as Head of Growth at Mach Industries during its $79M Series A funding
- Fund Launch: Raised $17.5M for his solo VC fund in 2024
Investment Philosophy: Beyond the Gimmicks
Xs targets what he calls “deep infrastructure” companies—firms that create foundational technologies rather than component-based solutions. His approach mirrors early investments in Microsoft, which provided exposure to the entire PC ecosystem.
“Many deep tech investments are too gimmicky,” Xs explains. “I’m looking for transformative technologies with exponential return potential.”
The Solo VC Advantage
While acknowledging the challenges facing small funds—PitchBook data shows solo funds have struggled in the current market—Xs believes boutique strategies can win:
- Concentrated Bets: Plans to allocate 80% of capital to just 15 companies
- Founder Focus: Seeks “out of distribution” founders—neurodivergent thinkers and problem-solvers with unique perspectives
- Long-Term Vision: Aims to capture 1% of a future $10 billion company
Looking Ahead: More Than Just VC
Xs envisions building multiple business lines beyond traditional venture investing:
- Venture index funds
- Venture credit services
- Company roll-ups using a buy-and-build model
His ambitious plans reflect a belief that technology could account for half of global GDP within two decades—a transformation he aims to help shape through strategic investments.
Article updated to clarify Xs’s role at Lux Capital as a summer associate.
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