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Six Banks Agree to $86.4 Million Deal in Mexican Bond Antitrust Case

By  |  August 17, 2026
Mexican flag against tall buildings

A long-running antitrust fight over trading in Mexico’s government debt market is nearing a conclusion after six international banks agreed to an $86.4 million settlement with investors.

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    The proposed agreement covers the Mexican units of Bank of America, Santander, BBVA, Citigroup, Deutsche Bank and HSBC, according to Reuters. It was submitted to a federal court in Manhattan and remains subject to judicial approval.

    The dispute centers on allegations that bank traders coordinated their activity in Mexican government bonds, potentially disadvantaging investors on the other side of transactions. The investors contend that the conduct stretched from 2006 into 2017, Reuters reported.

    Rather than focusing on a single transaction or trading desk, the litigation alleged a broader pattern of coordination among institutions that were significant participants in Mexico’s sovereign-debt market. According to Reuters, evidence cited by the plaintiffs included electronic communications among traders that they argued demonstrated efforts to influence prices depending on whether banks were buying or selling bonds.

    The institutions have rejected the allegations of wrongdoing, Reuters reported. Agreeing to a civil settlement allows defendants to end litigation without admitting liability, and the proposed agreement in this case does not amount to an admission that the banks violated antitrust law.

    If approved, the deal would raise the amount committed to settle the litigation to $107.1 million. That figure includes $20.7 million previously agreed to by Barclays and JPMorgan Chase in 2020, according to Reuters.

    The case has been pending for roughly eight years and forms part of a wider wave of litigation scrutinizing how large financial institutions operate in markets dominated by relatively small groups of dealers. Reuters reported that lawsuits brought in Manhattan have challenged bank conduct in areas ranging from foreign exchange and U.S. government debt to interest-rate and commodity markets.

    The settlement also carries a potentially substantial legal bill. Lawyers for the investor plaintiffs may request fees of as much as one-third of the $86.4 million agreement, or approximately $28.8 million, Reuters reported.

    For the settling banks, court approval would remove the remaining claims in a case tied to trading practices dating back almost two decades. For investors, it would turn allegations about competition in Mexico’s sovereign-bond market into more than $100 million in combined settlements — without requiring the defendants to concede that the alleged conspiracy occurred.

    Source: Reuters