2014: $800K Settlement for Erroneous Trading Programs
In June 2014, Citadel Securities settled with four regulatory bodies for approximately $800,000 related to automated trading programs that issued erroneous orders between 2010 and 2013. One incident involved a short sale of 2.75 million shares in 11 minutes; another involved a mistaken order that caused a 132% price spike. Source: SEC/FINRA public records.
2017: $22.6M SEC Fine for Misleading Clients on Trade Pricing
In January 2017, the SEC fined Citadel Securities $22.6 million for misleading clients about how it priced retail orders. The SEC found that two of Citadel's algorithms did not internalize retail orders at the best price observed. Citadel neither admitted nor denied the findings. Source: SEC enforcement release.
2018: $3.5M SEC Fine with Citadel Admission for 80M Trade Reporting Errors
In December 2018, the SEC fined Citadel Securities $3.5 million for incorrectly reporting nearly 80 million trades from 2012 to 2016. Citadel admitted to willfully violating books and records provisions. Source: SEC enforcement release (admission noted).
2020–2021: Multiple FINRA Censures, $700K OTC Fine, $275K Treasury Fine, $97M China Settlement
In 2020: FINRA censured Citadel multiple times for conduct including naked short selling allegations, FTD failures, circuit-breaker trading, and best execution issues (total ~$1M in fines); FINRA also imposed $700K for 2011-2020 OTC order handling conduct. In 2021: FINRA imposed $275K for improper reporting of ~500K Treasury transactions (2017-2019). In 2020: Citadel paid approximately $97M to Chinese regulators for 2015 trading irregularities. Sources: FINRA BrokerCheck (CRD# 116797), public reporting.