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Compounders at the Core.
Convexity at the Edge.

Aeternia Capital is a long-term investment firm combining concentrated ownership of exceptional businesses with asymmetric risk management.

Explore Our Philosophy →

Most portfolios choose between compounding and protection.
We don't.

Exceptional businesses create wealth through long-term compounding. Selective convexity adds resilience and creates exposure to outcomes the market may underprice. Aeternia is built to combine both.

A compounding core with selective convexity

One portfolio. Distinct roles. Clear hierarchy.

Compounders are the portfolio's primary engine. Convexity is used selectively to preserve resilience, create asymmetry, and maintain the ability to act during dislocation.

Portfolio architecture

Core

Compound

Exceptional businesses held for the long duration. Patient ownership through ordinary time — the portfolio's primary engine.

Compounders Long duration equity

Buffer

Reserve

Dry powder held ready. Liquidity that preserves the ability to act when others cannot.

Cash T-bills

Convexity

Edge

Asymmetric positions sized for non-linear payoffs — protective or growth-oriented, activated at dislocation.

Puts