How Sabertooth VC Deployed Nearly $500M Without Raising a Traditional Fund
Justin Ernest of Sabertooth VC invested nearly $500M into Anthropic, Anduril, and SpaceX by using a captive LP network instead of a formal venture fund.
LUMIEN3 min read
Justin Ernest, founder of Sabertooth VC, has invested nearly $500 million into high-profile startups including Anthropic, Anduril, and SpaceX, according to a TechCrunch report published June 9, 2026. Rather than spending roughly a year raising a formal venture fund, Ernest built a captive network of limited partners who commit capital on a deal-by-deal basis. The structure lets him move faster into competitive rounds while giving LPs more direct visibility into where their money goes.
What happened
Justin Ernest, the founder of Sabertooth VC, has put nearly $500 million to work in some of the most sought-after private companies around, including Anthropic, Anduril, and SpaceX. He did it without ever running a traditional fund-raise, according to TechCrunch.
The mechanism is a captive LP network. Instead of pooling capital upfront into a single vehicle, Ernest lines up a defined group of limited partners who can be called upon for individual deals. Each investment is its own discrete opportunity rather than a slice of a broader portfolio mandate.
The practical benefit is time. Raising a formal venture fund is typically a process that takes the better part of a year, involving road shows, legal structuring, and regulatory filings. By maintaining an already-vetted group of LPs, Ernest can move directly to deploying capital when a deal becomes available.
Why it matters
The startups Ernest backed, Anthropic, Anduril, and SpaceX, are among the most competitive late-stage private rounds in recent memory. Getting allocation in those deals often depends on speed and relationships, not just check size. A captive LP structure is one way to compress the time between “we have access” and “the money is wired.”
It also shifts how LPs experience the investment. In a traditional fund, a limited partner writes one check and trusts the manager to allocate across a portfolio over several years. In a deal-by-deal model, each LP can choose to participate or sit out on a given company, which gives them more control but also more decision-making work.
For the broader venture market, this is a reminder that the formal fund structure is one option, not the only option. As top deals attract more non-traditional capital, from family offices to corporate treasuries, the intermediaries who can aggregate that capital quickly have an edge.
Our take
From where we sit, the interesting part of this story is not the $500M number. It is the structural decision behind it. Ernest essentially traded the credibility signal of a named fund for the operational speed of a standing network. That is a reasonable trade if your LP relationships are strong enough to hold without the formal wrapper.
There are real tradeoffs here. Deal-by-deal structures can create LP fatigue. When every investment requires a fresh decision, some LPs eventually stop responding, especially in a slower deal environment. A traditional fund locks in the capital and removes that friction.
That said, for operators watching this from the outside, the lesson is worth keeping: institutional-looking outcomes do not always require institutional-looking processes. If you have a tight, trusted network and a clear thesis, you can build something that functions like a fund without the overhead of becoming one.
What to do about it
If you manage a business with surplus capital to deploy, or if you advise clients who ask about private market access, it is worth understanding what you are actually signing up for in a deal-by-deal structure versus a traditional fund commitment. Key questions to ask any manager running this model:
- How are deals sourced, and what gives you priority allocation in competitive rounds?
- What are the fees and carry terms on a per-deal basis versus what a comparable fund would charge?
- How many LPs are in the network, and what is the historical participation rate per deal?
- What happens to your access if you pass on several deals in a row?
The structure can work well, but the details matter more than the headline number.
