Citadel Securities Sues to Block SEC Market Tool Spending (1)

Jan. 17, 2026, 1:08 AM UTCUpdated: Jan. 17, 2026, 2:41 AM UTC

Citadel Securities LLC filed a lawsuit Friday accusing the company implementing the SEC’s market surveillance tool of spending tens of millions of dollars in fees “unlawfully collected” from Citadel Securities and other broker-dealers.

The complaint filed in the US District Court for the District of Columbia sought an injunction preventing Consolidated Audit Trail LLC, a private Delaware company charged with overseeing the financial market surveillance system set up by the Securities and Exchange Commission, from spending any of the $119 million in fees it holds in reserve.

CAT has been spending nearly $15 million per month, on track to deplete ...

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