International derivatives marketplace CME Group has posted a notice of disciplinary action against Tanius Technology LLC.

Pursuant to an offer of settlement in which Tanius neither admitted nor denied the rule violations or factual findings upon which the penalty is based, on May 28, 2025, a Panel of the Chicago Board of Trade Business Conduct Committee found that from March 3, 2023, through October 2, 2023, Tanius used an automated trading system to enter numerous opposing buy and sell orders for the same account in various 10-Year T-Note, Ultra 10-Year U.S. Treasury Note, and U.S. Treasury Bond futures contracts that matched opposite each other on more than an incidental basis.

Despite having notice that it entered orders that self-matched, Tanius failed to employ adequate functionality to minimize the potential for the orders to self-match on more than an incidental basis.

Specifically, though Tanius developed functionality to address wash trades, it was not implemented in a sufficiently consistent or comprehensive manner across strategies or communicated adequately to Tanius’ traders, which resulted in the matching of additional orders on more than an incidental basis.

Moreover, the Panel found that Tanius reasonably should have known that entering orders in this manner would achieve a wash result.

The Panel therefore concluded that Tanius violated CBOT Rules 432.W. And 534.

In accordance with the settlement offer, the Panel ordered Tanius to pay a $95,000 fine.

The effective date of the notice is May 30, 2025.