In its second-quarter report released on Tuesday, UBS AG said that the Securities and Exchange Commission, the New York Attorney General and the Financial Industry Regulatory Authority had all made inquiries into the bank’s dark pool alternative trading venue, Reuters reports.

According to the bank’s report, it is also named among dozens of defendants in putative class actions pending in New York federal court in connection with dark pool trading, Reuters says. Deutsche Bank AG also revealed on Tuesday in its second-quarter report that it is responding to requests for information from regulators regarding high-frequency trading, Bloomberg says.