MEXC bleeds $126M as FinCEN moves to cut it off from US finance

Roughly $126.03 million in net outflows hit MEXC over a 24-hour window spanning FinCEN's Nov. 6 enforcement action, according to DeFiLlama data. The exchange still held about $4.353 billion in tracked assets. Those figures track net movement through monitored wallets, and do not prove every withdrawal followed the announcement or say anything certain about whether MEXC can cover customer liabilities.

The Treasury's Financial Crimes Enforcement Network dropped a 24-page order accusing MEXC of facilitating about $16.7 billion in likely illicit activity between May 2021 and May 2026. Nearly $1.5 billion carried direct or indirect exposure to Russian sanctions evasion, including $232 million in direct dealings with sanctioned entities. FinCEN flagged about $129 million tied to Garantex and $4.1 million tied to Grinex, saying MEXC kept transacting with both as recently as June 2026.

Iran looms large too. Investigators found more than $1.87 billion in Iranian exposure, including roughly $1 billion in direct transfers with over 40 Iranian crypto exchanges, plus $22 million involving Iran's central bank and the Islamic Revolutionary Guard Corps, Qods Force included. At least $1.99 billion involved illicit cyber actors, with more than $37.9 million in suspected ransomware payments. Treasury Secretary Scott Bessent drew the line bluntly: access to the US financial system or support for the Iranian regime, not both.

MEXC says it is reviewing the order with its legal and compliance teams and has launched an independent examination of its anti-money laundering and sanctions controls. The exchange insisted customer funds are secure and trading, deposits and withdrawals are running normally. CEO Vugar Usi pushed back on what he called misconceptions, saying the restrictions target transactions involving US financial institutions rather than MEXC's whole global operation, and that the order freezes or seizes no assets held on the platform.

Here's what the order actually does. Covered US financial institutions would be barred from sending or receiving funds involving MEXC, crypto included, starting 30 days after publication in the Federal Register. There is no scheduled expiry, though FinCEN can grant exemptions. MEXC doesn't have to shut down abroad and customer assets aren't automatically frozen, but banks, liquidity providers and intermediaries under US jurisdiction could get skittish fast.

The blow lands while MEXC is already backpedaling internationally, having announced exits from France, the Netherlands, Russia and Belarus. Its trading engine keeps roaring regardless: TokenInsight pegged third-quarter 2026 volume at $1.069 trillion, fourth among exchanges studied, with market share climbing 0.38 percentage points to 8.91%. Commodity perpetual futures added $86 billion, giving MEXC a 17.43% slice of that market, second only to Binance.