Key Facts

—The move. Brazil’s central bank has entered the Ambipar bankruptcy case as a technical adviser to the court.

—The trigger. It is contesting a court order that froze Deutsche Bank collateral tied to currency-hedge contracts.

—The worry. The bank warns the ruling threatens legal certainty across Brazil’s foreign-exchange hedging market.

—The scale. That market held about R$707bn ($132bn) in short positions in late 2025, across dozens of banks.