Table of Contents

• You might want to know


• Main Topic


• Key Insights Table


• Afterwards...

You might want to know

How did Justin Ernest channel nearly half a billion dollars into late-stage, high-profile startups without launching a conventional venture capital firm?

Why are family offices and smaller institutional investors choosing specialized vehicles and nominee arrangements over direct allocations or traditional funds?

Main Topic

Over the past year, Justin Ernest identified a persistent mismatch in the venture-capital landscape: many family offices and smaller institutional investors were eager to invest in high-growth AI and deep-tech companies but lacked reliable access to coveted late-stage allocations. Drawing on more than five years of experience at Playground Global, where he invested in deep tech and helped lead fundraising efforts, Ernest believed his relationships with both founders and investors could bridge that gap.

Instead of following the standard path of creating a traditional VC fund — a process that can take new managers 12 to 18 months and requires building a track record and operational infrastructure — Ernest leveraged his personal network to secure allocations of stock in well-known, later-stage companies. He then offered those single-company opportunities to a select group of about 30 smaller institutional investors through structures such as special purpose vehicles (SPVs), single-asset funds, and nominee arrangements.

In a nominee structure, Ernest’s firm, Sabertooth Capital, holds shares on behalf of participating investors rather than layering another SPV. For most transactions, however, Sabertooth used SPVs: each deal was treated as its own separate vehicle in which the fund’s investors purchase interests in the SPV that owns the underlying stock. Over the last 12 months, Sabertooth has deployed nearly $500 million into ten companies, including Anthropic, Anduril, Base Power, Databricks, PsiQuantum, and SpaceX.

Ernest wrote checks ranging from $10 million to $275 million, which often represented substantial blocks of shares, and he consistently participated in officially approved company funding rounds. That company-sanctioned participation is important: it reassures both the target startups and participating limited partners that the investments are formal and approved, reducing the friction and reputational risk associated with unauthorized vehicles.

Sabertooth is not unique in giving family offices a path to acquire equity in high-profile, late-stage startups. Nevertheless, Ernest was able to raise significant capital quickly because he has cultivated a strong reputation in a space where smaller allocations and SPVs can sometimes be opaque. His credibility with founders and companies helped validate his role as a reliable intermediary.

This credibility is a decisive advantage. As one family-office CIO observed, Ernest is seen as an authentic investor with judgment, technical expertise, and a track record — qualities that distinguish him from groups that primarily focus on aggregating capital without contributing specialized insight.

That trust matters. When the CIO sought to invest directly in PsiQuantum, the company’s CFO recommended investing through Sabertooth. Such endorsements from company executives signal to smaller investors that their capital is being managed by someone who is known and respected by the very startups they wish to back.

Beyond technical skill and professional credentials — Ernest is a Harvard Business School graduate — he attributes part of his effectiveness to communication strengths developed over time. Having largely overcome a childhood speech impediment, he worked on and refined his ability to connect with people across his network. Ernest describes his role as the "nucleus" of a network; that central position allows him to mobilize capital quickly: he says he can often secure commitments from his captive set of limited partners after making only a few calls.

For now, Ernest plans to keep building the business of raising capital for single-company vehicles on behalf of his dedicated LP base. His long-term objective remains launching a traditional venture fund. He believes the performance track record established through successful one-off SPVs will be persuasive when he seeks to raise a formal fund, because prospective LPs typically prioritize demonstrated returns and execution capability when backing new fund managers.

Sabertooth has already produced at least one notable exit: Groq, a chipmaker that was later licensed and essentially acqui-hired by Nvidia in a transaction valued at about $20 billion, delivered a meaningful return. Upcoming liquidity events — most prominently SpaceX’s anticipated IPO and Anthropic’s expected listing — could generate additional substantial gains for Sabertooth’s investors.

Despite those results, SPVs and similar single-deal vehicles still lack the institutional prestige that accompanies established venture funds. Ernest, however, views his approach as strategically advantageous: starting with SPVs allowed him to get "in the action" quickly, prove his sourcing and execution capabilities, and build relationships and performance history without initially competing in the crowded market for emerging managers. He believes this vintage of investments could be one of the most rewarding of his professional lifetime.

Key Insights Table

Afterwards...

Looking forward, the strategy Ernest employed highlights several areas worth further exploration. First, the evolving legal and regulatory landscape around SPVs and nominee structures merits closer attention: startups are increasingly vigilant about unauthorized vehicles, and formalized processes that preserve transparency and company approvals will become more important.

Second, there is a clear opportunity to refine intermediated access models that connect family offices and smaller institutions with late-stage private-market opportunities while preserving governance, reporting, and alignment of interests. Improving standardized documentation, streamlined operational plumbing, and clearer disclosure practices could reduce friction and broaden participation.

Third, technology-enabled platforms that improve investor onboarding, compliance, and secondary liquidity for SPV investors could help scale these approaches responsibly. Innovations in cap table management, investor reporting, and digital nominee arrangements could make single-deal vehicles more transparent and efficient without sacrificing the speed and access that make them attractive.

Finally, as more of the private market converges with public markets through large IPOs and direct listings, managers who can consistently source company-approved allocations and demonstrate strong alignment with founders will remain valuable partners to both startups and smaller institutional investors. Continued focus on reputation, execution, and clear communication will be essential for intermediaries who aspire to graduate from deal-by-deal vehicles to full-scale venture funds.

In short, the combination of deep technical credibility, trusted relationships, and flexible transaction structures illustrates a pragmatic path for connecting underserved capital to high-quality private-market opportunities. That model — if managed with transparency and strong controls — could influence how many future managers build track records and attract long-term capital.