Antifragile Capital Efficiency (ACE)
A multiplicative diagnostic for capital asymmetry under Solvency II, NAIC RBC, and K-ICS. ACE measures how strategies retain capital, behave under stressed volatility, and participate in recoveries — in a non-compensable framework where catastrophic failure on any dimension cannot be offset.
A Multiplicative Diagnostic for Capital Asymmetry Under Risk-Based Solvency Regimes
Working Paper — CAT Ventures LLC — v1.0 — April 2, 2026
Jin S. Chun, CFA, FRM
Abstract:
This paper introduces Antifragile Capital Efficiency (ACE), a multiplicative diagnostic for capital asymmetry during financial stress regimes. ACE measures a strategy's ability to retain capital during drawdowns, maintain relative stability under stressed volatility, and participate proportionally in recoveries. The framework is defined as the product of three components — Capital Retention Ratio (CRR), Stress Volatility Ratio (SVR), and Recovery Participation Ratio (RPR) — in a non-compensable structure where extreme weakness in any single component disproportionately reduces the final score. The diagnostic is designed for capital-constrained allocators operating under Solvency II, NAIC RBC, and K-ICS.
Suggested citation
Chun, J.S. (2026). Antifragile Capital Efficiency (ACE): A Multiplicative Diagnostic for Capital Asymmetry Under Risk-Based Solvency Regimes. CAT Ventures LLC Working Paper No. 2026-01. Available at: ssrn.com/abstract=6512158
Related work
Working Paper: The Gaps: Governance Physics and the Cybersecurity Capability Break
Op-Ed: How Was CrowdStrike Even Invited to Glasswing?