Sabertooth VC deploys $500M via deal-by-deal LP network, skipping traditional fund raise

Justin Ernest, founder of Sabertooth VC, has invested close to $500 million into high-profile startups including Anthropic, Anduril, and SpaceX without ever raising a traditional venture capital fund. Instead of spending a year or more pitching institutional investors and navigating fund formation, Ernest tapped a captive network of limited partners who committed capital on a deal-by-deal basis.

The approach allows Ernest to move faster than traditional fund managers, who must secure commitments upfront and then deploy capital over a multi-year investment period. By assembling a network of LPs willing to back individual deals, Sabertooth can evaluate opportunities and close investments without the structural overhead of a formal fund. The model has proven effective in securing allocations to some of the most competitive startup rounds of the past few years.

Deal-by-deal deployment

Ernest's LP base includes high-net-worth individuals and family offices who trust his deal selection and are willing to commit capital quickly. This structure sidesteps the lengthy fundraising process that typically precedes a new VC fund, where managers spend 12 to 18 months meeting with institutional investors, negotiating terms, and finalizing legal documents. For LPs in Ernest's network, the trade-off is access to deals they might not otherwise see in exchange for committing capital on shorter notice.

The Sabertooth model reflects a broader shift in venture capital, where alternative structures—rolling funds, syndicates, and special purpose vehicles—are challenging the dominance of traditional 10-year closed-end funds. Ernest's nearly $500 million deployment demonstrates that a well-connected operator can compete for allocations in the most sought-after rounds without the institutional scaffolding that has defined VC for decades.