Sabertooth VC Deployed Nearly $400M Into Elite Startups Without a Traditional Fund

Sabertooth VC founder Justin Ernest has channeled nearly $400 million into 10 late-stage companies — including Anthropic, SpaceX, Anduril, Databricks, and PsiQuantum — over the past 12 months, doing so entirely through Special Purpose Vehicles rather than a conventional venture fund. Ernest, who spent more than five years as an investor at Playground Global focused on deep tech and fundraising, built the model to give family offices access to cap tables that routinely exclude them.

The SPV Mechanism

Rather than spending 12 to 18 months raising a formal fund — the runway Ernest cites as typical for new managers — he sources equity allocations directly from company-approved rounds and packages each deal into a separate legal entity. Investors buy into a vehicle that owns shares in one company, not a diversified pool. Individual checks have ranged from $10 million to $275 million, placing Sabertooth inside official rounds rather than secondary or gray-market alternatives.

Company approval is the structural differentiator. Startups including Anthropic and Anduril have been tightening restrictions on unauthorized SPVs, making access through a firm the company itself endorses carry real legal and reputational weight for limited partners deciding where to wire capital.

A Captive LP Base of About 30 Institutions

Ernest's investor base runs to roughly 30 family offices and smaller institutional investors he says he can reach quickly. "I can usually make four or five or six phone calls, and I know exactly what my LPs will commit," he said. That responsiveness matters when allocation windows in late-stage rounds close fast.

Benjamin Wagner, a CIO overseeing a family office managing wealth for 50 individuals, said Ernest's technical judgment separates him from firms that primarily aggregate capital. Wagner's assessment solidified when PsiQuantum — last valued at $7 billion — directed him to invest through Sabertooth rather than pursue a direct entry into the round.

Returns and the Road Ahead

One full exit has cleared: chipmaker Groq was licensed and acqui-hired by Nvidia in a $20 billion transaction. SpaceX and Anthropic both carry anticipated public listings that Ernest expects to deliver further returns for his LP base.

His stated long-term objective is a conventional venture fund, using SPV returns to build the track record institutional allocators demand before backing a new manager. Whether single-deal performance translates cleanly into fund-manager credibility remains an open question in the industry — but Ernest is betting that getting into the right rounds early, with company sign-off, is the harder part of the job.