Justin Ernest, founder of Sabertooth VC, has deployed nearly $500 million into a portfolio of high-growth startups without ever raising a formal venture fund. Instead of spending a year courting institutional investors, he tapped a captive network of limited partners to back companies including Anthropic, Anduril, and SpaceX.

The approach sidesteps the traditional 10-year fund cycle, allowing for faster capital deployment and more flexible deal terms. It reflects a growing trend among sophisticated investors who seek direct exposure to private companies without the overhead of a conventional VC structure.

The investments span artificial intelligence, defense technology, and aerospace — sectors that have attracted significant capital in recent years. Ernest's network reportedly consists of high-net-worth individuals and family offices who trust his sourcing and due diligence capabilities.

For startups, this model offers a potential alternative to traditional VC governance and, for LPs, a more agile path to access coveted private placements. However, it also raises questions about investor protection and transparency in unregulated investment pools.

Critics caution that such structures lack the regulatory safeguards of formal funds, potentially exposing LPs to greater risk. The long-term viability of the approach remains unproven.