Asymmetric Safety Control, Decorrelation-Responsive Regime Detection, and Cascade-Attenuated Forced Liquidation in Automated Risk Management Systems for Correlated Financial Instruments

We present seven independently deployable mechanisms for automated risk management systems handling portfolios of correlated financial instruments. (1) Asymmetric position safety control maintains two independent health computation paths — one excluding stress-activated parameters for forced-liquidation determination, one including them for new-risk eligibility — so that tightening margin requirements in response to detected stress cannot cause the forced-selling cascade it was activated to prevent. (2) Asymmetric risk parameter governance enforces directional rate limits on parameter updates: loosening is bounded in magnitude and frequency; tightening is immediate. (3) Real-time decorrelation detection identifies statistically significant structural breaks in measured pairwise dependence and automatically adjusts risk parameters without human intervention. (4) A cascade brake with continuous degradation independently limits total system exposure (stock bound) and forced-liquidation velocity (flow bound) using a decaying accumulator, with dependence-ordered liquidation sequencing that minimises aggregate market impact. (5) Dependence-adjusted spread determination computes dynamic transaction fees as a function of a pool-level dependence metric derived from measured pairwise co-movement. (6) An independence pricing error ratio R quantifies in real time the degree to which concurrent adverse events exceed the independence prediction, with a scaling exponent n characterising the power-law growth R ≈ dⁿ across portfolio dimensionality d. (7) A dependence-penalised position addition guard rejects proposed portfolio changes when prospective dependence-adjusted health falls below a concentration threshold. These mechanisms address failure modes demonstrated in the March 2020 crude oil margin cascade, March 2022 LME nickel crisis, September 2022 UK gilt/LDI spiral, and January 2021 meme-stock margin restrictions. No existing central counterparty, clearinghouse, exchange margin engine, or portfolio margin system implements any of these mechanisms. The architecture is deployment-agnostic: applicable to CCP clearing systems, prime brokerage platforms, insurance and reinsurance pricing systems, portfolio risk platforms, and smart contracts on blockchain networks.