The firm that handles one out of every four US stock trades
In short: While most people view the stock market as a chaotic auction, a single firm often acts as the invisible backbone. Citadel Securities is one of the largest market makers in the United States, providing the liquidity that allows retail and institutional investors to trade nearly instantly.
Citadel Securities is a primary market maker, meaning it stands ready to buy or sell securities to provide liquidity to the market. By 2026, 25% of all American equity transactions will feature this company's participation. The New York Stock Exchange identifies this firm as its primary designated market maker. Kenneth C. owns the majority of both this corporation and the hedge fund Citadel LLC, despite their independent status.
Griffin. The firm moved its headquarters from Chicago to Miami in 2022 and is currently constructing a new $1.2 billion office tower on Park Avenue in Manhattan. The firm's scale is immense, but its dominance has drawn significant regulatory and political scrutiny. In 2020, the firm doubled its profit during the pandemic, generating $4 billion in revenue. This growth coincided with increased retail trading and volatility.
Consequently, high-ranking officials, including Senator Elizabeth Warren and SEC Chairman Gary Gensler, have raised concerns about whether such a dominant market position poses a systemic threat to the U.S. financial system. Critics have specifically targeted the firm's "payment-for-order-flow" arrangements and its practice of hiring former officials from regulatory agencies like the SEC and CFTC. Despite these controversies, the firm remains a powerhouse of technological execution. It has faced various fines for automated trading errors, including a 2014 settlement over a program that caused a stock price to plunge after a test release. More recently, in 2021, the SEC fined the firm $7 million for a coding error that mismarked millions of sell orders. The firm continues to expand globally, trading in over 35 countries and recently launching interest-rate swap trading in Europe and Hong Kong.
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Sources
- Summary by Intellect · source: Citadel Securities
- Also: Wikidata — Citadel Securities · CC0
- Also: find-and-update.company-information.service.gov.uk — CITADEL SECURITIES FINANCE (UK) LIMITED overview - Find and update company information - GOV.UK
- Also: Wikidata — Citadel Securities to Receive First Outside Investment · CC0
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