Cross-Margin Vulnerabilities

Cross-margin vulnerabilities arise in trading systems where collateral from all open positions is pooled together to satisfy margin requirements. While this provides greater capital efficiency, it creates a systemic risk where a sharp decline in the value of one asset can lead to the liquidation of the entire portfolio.

In the crypto market, this is a significant concern because assets are often highly correlated during market crashes. If a trader holds several long positions, a sudden drop in the market can trigger a chain reaction of liquidations that depletes the entire account balance, even if some of the positions were fundamentally sound.

These vulnerabilities are exploited by market makers and liquidators who profit from the resulting volatility. Understanding these risks is crucial for traders who wish to avoid total account wipeouts.

It highlights the need for better risk management tools, such as isolated margin or stricter leverage limits. In the context of protocol design, avoiding cross-margin systems is a key step toward systemic decoupling.

It is a trade-off between maximizing potential gains and protecting against catastrophic portfolio failure.