Stable Asset Management's Erik Serrano Berntsen - what it takes to build a great alternative asset management firm

What It Covers

Erik Serrano Berntsen, founder of Stable Asset Management, explains how his firm has built 43 alternative asset management companies since 2006, managing roughly $5 billion in assets. He covers GP seeding versus acceleration investing, the LP-GP misalignment problem, evergreen fund structures, manager edge evaluation, and why non-market risks destroy more firms than poor portfolio performance.

Key Questions Answered

• •GP-LP Misalignment Solution: As GPs scale, management fees dominate income and incentives shift from performance to asset gathering. Stable's structural fix is making the LP a co-owner of the GP itself — turning an adversarial fee negotiation into a collaborative conversation where both parties share upside from higher expenses like talent acquisition or risk management infrastructure, eliminating the core conflict at its source.
• •Three-Part Manager Edge Framework: Evaluate GPs across investment edge, operational edge, and commercial edge. Early-stage managers must lead with differentiated returns — decorrelation or niche market beta. As AUM grows, operational infrastructure becomes the differentiator: reporting quality, investor relations, and brand. Commercial edge — channel strategy and client service — unlocks distribution scale. Returns are necessary but insufficient without the other two layers.
• •Founder Age and Timing Data: Stable's internal "Project Legends" research across top public and private GP founders reveals median launch ages of 33 (public markets) and 38 (private markets) — younger than most assume. Public markets reward earlier launches because deal flow is relatively democratized, while private markets require relationship capital that takes longer to accumulate, often necessitating a co-founder pairing for complementary access.
• •Non-Market Risk as Primary Failure Mode: The leading cause of GP failure is not portfolio underperformance but operational fragility — talent departures, regulatory issues, investor communication breakdowns, and balance sheet mismanagement. The best firms structurally isolate the investment function from business volatility, ensuring that a bad portfolio quarter does not trigger team attrition or LP relationship deterioration, which compounds into permanent business damage.
• •Evergreen Structures by Asset Class: Private credit is the natural fit for evergreen vehicles — yield recycling, lower friction for LPs, and no vintage-based re-engagement cycles. Private equity and real assets face structural challenges around liquidity on/off ramps. Stable's recent acceleration investments involve injecting $100–300 million into existing closed-end managers to launch evergreen vehicles, simultaneously opening wealth channel distribution and attracting institutional LPs who prefer the evergreen format for re-ups.
• •Self-Awareness as the Non-Obvious Founder Trait: Among all attributes evaluated in GP founders, self-awareness consistently predicts scalability. Founders who accurately identify their own gaps — typically on the business-building side rather than investing — proactively hire CFOs, COOs, and IR professionals early. High-ego founders who conflate investment skill with operational competence underinvest in infrastructure, which surfaces as talent attrition and LP communication failures at the precise moment scaling pressure peaks.