MEXC Sees $126 Million in Outflows as US Targets Exchange Over $16.7 Billion in Suspected Illicit Transactions

Crypto exchange MEXC recorded approximately $126 million in net user outflows over a single day as United States regulators moved to sever the platform's access to the American financial system.

The withdrawals coincided with a Nov. 6 enforcement action by the US Treasury Department's Financial Crimes Enforcement Network (FinCEN), which accused the exchange of facilitating $16.7 billion in transactions linked to sanctions evasion, terrorist financing and cybercrime.

Data from DeFiLlama showed $126.03 million in net outflows over a 24-hour period spanning the announcement, while the exchange retained approximately $4.353 billion in tracked assets. These figures represent net movements through monitored wallets. They do not establish that all withdrawals occurred after the announcement, nor do they indicate whether the exchange holds sufficient assets to meet its customer liabilities.

MEXC Moves to Reassure Users

MEXC has sought to contain concerns about its financial position, insisting that customer funds remain secure and that its trading, deposit and withdrawal services are operating normally.

In an official statement, the exchange said it was reviewing the Treasury order with its legal and compliance teams and had initiated an independent examination of its anti-money laundering and sanctions controls.

“We take the concerns raised seriously and intend to engage constructively with FinCEN, as well as other relevant regulators and competent authorities worldwide,” the company said.

Chief Executive Vugar Usi separately sought to clarify the implications of the order after concerns spread among the exchange's user base.

“A number of misconceptions are floating around,” Usi said, emphasizing that the restrictions apply to transactions involving US financial institutions rather than the exchange's entire global operation.

He added: “The order itself does not freeze or seize any assets held on MEXC. Users can trade normally.”

Usi expressed confidence that the matter would be resolved and said the exchange would continue updating customers as discussions with regulators progress.

What FinCEN's 24-Page Order Found

The company's response followed a sweeping US government investigation that identified significant deficiencies in MEXC's compliance controls, despite the exchange's stated policies against servicing customers in sanctioned jurisdictions.

In its 24-page order, FinCEN said MEXC facilitated approximately $16.7 billion in likely illicit activity between May 2021 and May 2026, including transactions involving Russian sanctions evasion networks and Iranian-linked entities.

Nearly $1.5 billion involved direct or indirect exposure to Russian sanctions evasion, including $232 million in direct dealings with sanctioned entities. FinCEN specifically identified approximately $129 million in transactions involving Garantex and another $4.1 million involving Grinex after the Russian exchanges were sanctioned by Western authorities. The agency said MEXC continued transacting with both platforms as recently as June 2026.

Investigators also identified more than $1.87 billion in transactions with Iranian exposure, including approximately $1 billion in direct transfers involving more than 40 Iranian crypto exchanges. Another $22 million involved Iran's central bank and the Islamic Revolutionary Guard Corps, including its Qods Force.

Separately, the agency identified at least $1.99 billion involving illicit cyber actors, including more than $37.9 million in suspected ransomware payments.

Treasury Secretary Scott Bessent framed the enforcement action as part of Washington's broader effort to restrict the financial channels available to sanctioned actors, casting the decision facing institutions as a choice between US market access and dealings with sanctioned regimes.

“Either you support the Iranian regime, or you have access to the U.S. financial system,” he said.

Scope and Limits of the US Financial Cutoff

The order prohibits covered US financial institutions from sending or receiving funds involving MEXC, including cryptocurrency transfers, beginning 30 days after its publication in the Federal Register. Once effective, the prohibition will bar covered institutions from processing transfers to or from the exchange. It carries no scheduled expiration date, although FinCEN retains the authority to grant exemptions.

For covered institutions, the Federal Register publication date effectively starts a countdown, leaving a defined interval in which transfers involving MEXC remain permissible before the prohibition binds.

The restriction does not shut down MEXC internationally or automatically freeze customer assets, but it could complicate the exchange's relationships with banks, financial intermediaries and liquidity providers operating within the US regulatory system. The case also illustrates how Washington's enforcement toolkit applies to globally operating crypto platforms: rather than targeting MEXC's operations directly, the order binds the US-covered banks and intermediaries that connect the exchange to the American financial system.

Pressure Builds on a $1 Trillion Trading Business

The US enforcement action comes as MEXC retreats from several international markets amid mounting regulatory scrutiny, even as its trading business continues to expand. As CryptoSlate reported on Oct. 30, the exchange has announced withdrawals from France, the Netherlands, Russia and Belarus as part of its efforts to address compliance concerns. Unlike those market exits, which the exchange announced itself, the US order is imposed from outside and takes effect on a timetable set by regulators rather than by MEXC.

The latest US intervention adds to those setbacks, potentially complicating MEXC's ambitions to expand beyond cryptocurrency trading into traditional financial markets.

The regulatory pressure comes despite the exchange's growing market presence. A TokenInsight report showed that MEXC processed $1.069 trillion in trading volume during the third quarter of 2026, ranking fourth among the exchanges covered by the study. Its overall market share reached 8.91%, up 0.38 percentage points from the previous quarter.

MEXC has also gained ground in derivatives linked to traditional financial assets, processing $86 billion in commodity perpetual futures during the quarter, a 17.43% market share that ranked second only to Binance.

The figures highlight the scale of the trading business now exposed to heightened regulatory uncertainty as MEXC attempts to broaden its presence in global financial markets.

Although FinCEN's order does not prohibit MEXC from operating internationally, it could disrupt relationships with banks, liquidity providers and other intermediaries subject to US jurisdiction. The extent of that disruption remains unclear because MEXC has not disclosed how much of its trading activity or liquidity depends on institutions covered by the prohibition, leaving the practical impact difficult to quantify.

The immediate test will come when the restrictions take effect, particularly whether the exchange can maintain its existing financial relationships while addressing the compliance deficiencies identified by US authorities. Markers to watch include the order's publication in the Federal Register, which starts the 30-day clock; any exemptions FinCEN chooses to grant; and the findings of the independent examination of MEXC's anti-money laundering and sanctions controls that the exchange says it has initiated.