1 year ago




ELECTION OF PAYMENT FORM The finn intends to pay the fine proposed in the attached Letter of Acceptance, Waiver and Consent by the following method (check one): Cl ,,l:!P A finn check or bank check for the full amount; Wire transfer; Cl The installment payment plan. 4 o Monthly o Quarterly Respectfully submitted, Respondent Citadel Securities LLC Date Billing and Payment Contact Please enter the billing contact infonnation below. Nasdaq MarketWatch will contact you with billing options and payment instructions. Please DO NOT submit payment until Nasdaq has sent you an invoice. Billing Contact Name: ~A "1 tv\e 'l"j" 1-K"IA Billing Contact Address: l 3 l ~ · ~V¥lin\ ~ ·, C.JU,U-tp 1 IL /pp (po.) Billing Contact Email: fv\t:l V\ ! me r>m1vn @,CAWU. ccrvi Billing Contact Phone Number: DJ ;;J..- 316 - 3 / tpO, 4 The installment payment plan is only available for a fine of $50,000 or more. Certain requirements apply. 20100235180,(RJB) 8

This Corrective Action Statement is submitted by the Respondent, Citadel Securities LLC ("Citadel Securities'?· It does not constitute factual or legal findings by FINRA, nor does it reflect the views of FINRA, or its staff. STATEMENT OF CORRECTIVE ACTION BY CIT ADEL SECURITIES LLC Citadel Securities LLC submits this Statement of Corrective Action in connection with the foregoing Letter of Acceptance, Waiver, and Consent ("A WC") to describe the steps it has taken to correct and substantially reduce the risk of recurrence of the issues addressed by the AWC. The A WC addresses a strategy that was implemented in 2008 and ceased operating in 2012. At the time the strategy was developed, Citadel Securities had processes in place to test and monitor the implementation and modification of its algorithmic trading strategies. Over the past eight and a half years, Citadel Securities has increasingly formalized these processes with corresponding enhancements to the required documentation regarding developers' efforts to ensure that the design of a strategy under consideration would not adversely affect the market, including any unintended market impact. Citadel Securities' current policies and procedures require: (a) restricted technology access rights to Citadel Securities' source code, development, testing, and production environments, and trading systems; (b) formalized and documented development and testing of new trading systems and changes to existing trading systems; ( c) formalized and documented review and approval by business supervisors and technology managers of technology releases; ( d) business and quantitative research approval of new or modified trading algorithms and, in certain circumstances, review by Legal and Compliance; and ( e) enhanced real-time monitoring for potential trading system issues. Although many of these requirements were satisfied informally during the time period addressed by the A WC, the current procedures prescribe uniform compliance with each requirement prior to the implementation of a new strategy or material modification to a strategy. When the strategy at issue in the A WC was implemented, Citadel Securities required personnel engaged in trading functions to be registered with FINRA. For more than six years, Citadel Securities has also required registration for the individuals responsible for supervising the design and operation of Citadel Securities' algorithmic trading strategies, including the supervisors of Citadel Securities' quantitative research function. In addition, since 2010, Citadel Securities has extended its existing automatic archiving for regulatory purposes to all electronic communications sent and received by those professionals performing the functions described in the A WC. Citadel Securities' systems now automatically retain electronic communications for all Citadel LLC personnel.

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