Main Street’s msUSD Stablecoin Depegs 90% Following $318 Billion Liquidation Cascade

On June 20, 2026, Main Street's msUSD stablecoin suffered a catastrophic depegging event, losing approximately 90% of its value according to official protocol statements and smart contract logs. The collapse was triggered by a rapid on-chain liquidation cascade that exposed significant collateral and liquidity mismatches within the protocol's regional pools. Data indicates that out of a total reported value of $1.1 trillion, approximately $318 billion was directly impacted by the liquidity crisis. Main Street has confirmed it is currently overhauling its risk engine to stabilize remaining reserves. This incident, reported by the News Desk and verified through on-chain transaction data, highlights the systemic risks inherent in decentralized stablecoin architectures when automated risk controls fail to keep pace with extreme market volatility.