WASHINGTON — The U.S. Securities and Exchange Commission fined Citadel Securities LLC $7 million for settling charges of violating order marking requirements, the commission announced Friday.
The SEC estimated that the firm marked millions of certain short sale orders as long sales, and vice versa, between September 2015 and September 2020, according to the commission.
The source of the inaccuracies was a coding error in Citadel's automated trading system during this time frame, the SEC found.
A Citadel spokesperson told CNBC that the matter "had no impact on the quality of our client execution."
"While updating our systems to accommodate certain client requests, we made a coding change that inadvertently affected a de minimis percentage of our order markings," the spokesperson added.
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