Asymmetric Safety Control, Decorrelation-Responsive Regime Detection, and Cascade-Attenuated Forced Liquidation in Automated Risk Management Systems for Correlated Financial Instruments
Year: 2026
Type: article
Abstract: 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.
Author: Zisckind, Tal
Language: English
Subfield: Finance
Domain: Social Sciences
Open Access status: green
OpenAlex ID: W7225592868