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Jane Street Capital

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Jane Street Capital
Company typePrivate
IndustryFinancial services
FoundedAugust 31, 1999; 26 years ago (1999-08-31)[1]
Founders
Headquarters250 Vesey Street,
New York City
,
U.S.
ProductsHigh-frequency trading, Market maker[2]
Number of employees
3000[3]
ASN
Websitewww.janestreet.com

Jane Street Capital is an American-based, private quantitative trading firm. Jane Street employs approximately 3,000 people across its global offices, located in New York, Singapore, London, and Hong Kong.[4]

Jane Street originally traded American depositary receipts, but has since traded exchange-traded funds (ETFs), commodities, indexes and derivative products, and fixed income.[5][6] They do not have a clear management structure, but instead operate like an “anarchist commune”.[5]

In 2025, Jane Street was temporarily banned by the Securities and Exchange Board of India (SEBI) for alleged market manipulation.[7]

Leadership Culture

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Jane Street was co-founded by Tim Reynolds, Robert Granieri, Marc Gerstein, and Michael Jenkins in 1999. Reynolds, Granieri, and Jenkins were former traders at Susquehanna International Group, while Gerstein was a developer at IBM.[8] Jane Street was sued by Susquehanna for poaching top talent with proprietary information, but no action has been taken since the filing.[8] Robert Granieri is the only founder still at the company, but Jane Street does not have a CEO. The company is informally led by a group of 30 or 40 senior executives,[5] and all employees are paid based on the firm's collective profits, not personal trading gains.[9]

In 2025, Jane Street employs approximately 3,000 employees,[10] with its headquarters located in New York City’s Financial District's 250 Vesey Street.[11]

Outreach

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Former and current executives partially attribute Jane Street’s success to their love of puzzles.[12] Every one or two months, Jane Street releases a puzzle to the public to solve, displaying contestants who submitted correct solutions on its website.[13] Jane Street holds in-person events including SEE, AMP, INSIGHT, and FTTP, which range from day-long to weeks-long, teaching students STEM-related topics for quantitative trading.[14]

In November 2020, Jane Street hosted a market prediction competition with a $100K prize pool that ran until August 2021.[15] The stock trading data in the Jane Street dataset provided for this competition has been used in research studies aimed at improving trading decision-making.[16]

Technology

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Jane Street uses OCaml for its operations, contributing to open-source libraries, including an open-source OCaml compiler.[17] Jane Street’s use of OCaml has been paired with increased operational reliance on Python for machine learning.[18]

Controversies

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Jane Street has been in several legal controversies with regulators and competitors in foreign markets.

Securities and Exchange Board of India

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In July 2025, SEBI alleged that Jane Street used multiple entities to manipulate the market and barred Jane Street from accessing the market.[19][20] On July 14th, 2025, the company has put $560 million into an escrow account as part of a request to the Securities Appellate Tribunal to resume trading activities.[21]

SEBI accuses Jane Street of using one entity to acquire substantial quantities of bank stocks at market open, increasing the value of the Bank Nifty index, while a separate entity simultaneously held derivatives that would benefit from a later decline in that index. Near the expiry of the derivatives, the bank stocks were allegedly sold by Jane Street, causing a decline in the Bank Nifty and generating profits from the derivatives.[22][23] Jane Street has denied all wrongdoing, stating it was basic index arbitrage. [21]

Millennium Management

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Jane Street filed suit against two former Jane Street employees at Millennium Management, accusing them of stealing trade secrets, primarily of its Indian market operations.[5][24] The suit was settled in December 2024 for an undisclosed amount. [24]

South Sudan

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Jane Street faced scrutiny in June 2025 over its co-founder, Robert Granieri, facing allegations of funding an attempted coup against South Sudan by Ajak and Abraham Keech.[25][26] The matter was resolved with no charges being brought against Granieri.

Trading Activities

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Jane Street traded American depositary receipts before moving into equity options and ETFs, with ETFs becoming the main focus. [12] Throughout the late 2000s, Jane Street started trading fixed income, futures, commodities, and equity options.

Jane Street is not known for creating detailed year-long plans.[6] Instead, Jane Street expands into neighboring markets incrementally. In the second quarter of 2025, Jane Street reported $10.1 billion in net trading revenue and $6.9 billion in net profit, setting a record for the highest trading revenue in a quarter. [27] In 2024, Jane Street averaged $2 trillion in equity trading volumes per month. [28]

Exchange-Traded Fund

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In 2024, Jane Street accounted for 41% of the bond ETF trading volume. It held 24% of the primary US-listed ETFs, 16% in the non-primary market US-listed ETFs, and 17% of secondary market activity in Europe. [29]

Commodity

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In 2022, Jane Street held an $8.1 million position on commodities, increasing to $16.6 million in 2023. In Jane Street’s 2024 bond docs, they did not publicly state their intent to expand into commodities.[6]

Fixed Income

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In 2024, Jane Street averaged $230 billion in monthly fixed income trading volume. [30]

Options

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In 2024, Jane Street responsible for around 8% of Options Clearing Corporations transactions. [30]

Retail flow

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In August 2025, Jane Street handled the second most non S&P 500 orders and third most S&P 500 for Robinhood Markets. Jane Street paid $61.3 million for stock flow and $15.2 million for derivatives to Robinhood Markets as a fee to control order flow. [31]

Notable past employees

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  • Brett Harrison, current CEO of trading technology firm Architect Financial Technologies

References

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  1. ^ "Jane Street Capital, LLC :: Delaware (US) :: OpenCorporates". opencorporates.com. Archived from the original on 2017-08-16. Retrieved 2016-08-11.
  2. ^ Patterson, Scott; Rogow, Geoffrey (August 1, 2009). "What's Behind High-Frequency Trading". The Wall Street Journal. Archived from the original on April 11, 2021. Retrieved April 2, 2019.
  3. ^ "Jane Street Scores $10.6 Billion Trading Haul". Bloomberg.com. 17 April 2024. Archived from the original on 2024-04-17. Retrieved 2025-02-18.
  4. ^ "Who We Are :: Jane Street". www.janestreet.com. Retrieved 2025-11-20.
  5. ^ a b c d Wigglesworth, Robin (28 Jan 2021). "Jane Street: the top Wall Street firm 'no one's heard of'". www.ft.com. Retrieved 2025-11-20.
  6. ^ a b c Wigglesworth, Robin (9 Oct 2025). "Jane Street is getting physical, In commodities at least". www.ft.com. Retrieved 2025-11-20.
  7. ^ Gupta, Devina (2025-07-17). "Why Jane Street, a US trading giant, is in trouble in India". BBC News. Retrieved 2025-11-20.
  8. ^ a b Natarajan, Sridhar (October 2, 2025). "The Mysterious Billionaire Boss at Jane Street Smashing Trading Records". Bloomberg. Retrieved November 20, 2025.
  9. ^ "Morning Coffee: Jane Street, the strange place, where intelligent people are paid obscenely. The worst place to be a junior". eFinancialCareers. 2024-10-07. Retrieved 2025-11-20.
  10. ^ "Who We Are :: Jane Street". www.janestreet.com. Retrieved 2025-11-20.
  11. ^ "Our Offices :: Jane Street". www.janestreet.com. Retrieved 2025-11-20.
  12. ^ a b "Client Challenge". www.ft.com. Retrieved 2025-11-20.
  13. ^ "Puzzles :: Jane Street". www.janestreet.com. Retrieved 2025-11-20.
  14. ^ "Programs and Events :: Jane Street". www.janestreet.com. Retrieved 2025-11-20.
  15. ^ Sekhon, Gianetan Singh (2025-01-06). "KAGGLE Jane Street Real Time Market Data Forecasting Competition". Medium. Retrieved 2025-11-20.
  16. ^ Haotian, Wu (April 26, 2021). "Trading Decision Making Based on Hybrid Neural Network". 2021 6th International Conference on Intelligent Computing and Signal Processing (ICSP): 1247–1250. doi:10.1109/ICSP51882.2021.9408683.
  17. ^ Minsky, Yaron; Weeks, Stephen (April 24, 2008). "Caml trading – experiences with functional programming on Wall Street". Journal of Functional Programming. 18 (4): 553–564. doi:10.1017/S095679680800676X. ISSN 1469-7653.
  18. ^ "Jane Street showing love to Python over OCAML as it expands its AI team". eFinancialCareers. 2024-11-27. Retrieved 2025-11-20.
  19. ^ Shekhar, Chandra (July 6, 2025). "Jane Street Case Marks a Turning Point in SEBI's Index Governance Strategy". Social Science Research Network. Archived from the original on July 19, 2025. Retrieved November 13, 2025.
  20. ^ Presse, AFP-Agence France. "India Regulator Bars Trading Firm Jane Street Group". barrons. Retrieved 2025-11-13.
  21. ^ a b Vishnoi, Abhishek (July 21, 2025). "Jane Street Allowed to Resume Trading in India, SEBI Says". Bloomberg.
  22. ^ "Why Jane Street, a US trading giant, is in trouble in India". www.bbc.com. 2025-07-17. Retrieved 2025-11-20.
  23. ^ Pandey, Jhyestha (August 20, 2025). "Index Manipulation vs Index Arbitrage: Economic Impacts of the Jane Street Scandal". Social Science Research Network.
  24. ^ a b Dolmetsch, Chris (December 6, 2024). "Jane Street-Millennium Trade Secrets Fight Ends in Settlement". Bloomberg.
  25. ^ "How Jane Street co-founder landed in a coup controversy". The Economic Times. 2025-07-11. ISSN 0013-0389. Retrieved 2025-11-20.
  26. ^ Benny-Morrison, Ava (June 25, 2025). "Jane Street Boss Says He Was Duped Into Funding AK-47s for Coup". Bloomberg.
  27. ^ Seligson, Paula (September 2, 2025). "Jane Street's $10.1 Billion Trading Haul Sets Wall Street Record". Bloomberg. Archived from the original on 16 Sep 2025. Retrieved November 11, 2025.
  28. ^ "Robinhood Financial LLC - Held NMS Stocks and Options Order Routing Public Report" (PDF). Robinhood. Archived (PDF) from the original on 12 June 2025. Retrieved November 13, 2025.
  29. ^ Atkins, Alice (May 6, 2024). "High-Tech Trading Firms Race to Grab Bond Market Turf". Bloomberg. Retrieved November 15, 2025.
  30. ^ a b Arroyo, Carmen (April 23, 2025). "Jane Street's $20.5 Billion Trading Haul Tops Citi and BofA". Bloomberg. Archived from the original on 7 Sep 2025. Retrieved November 19, 2025.
  31. ^ Mercurliali, Etienne (August 8, 2025). "Robinhood, Schwab led US $340m retail order flow payment bonanza in May". Globlal Trading.
  32. ^ Parloff, Roger (August 12, 2021). "Portrait of a 29-year-old billionaire: Can Sam Bankman-Fried make his risky crypto business work?". Yahoo!Finance. Archived from the original on June 24, 2022. Retrieved September 6, 2021.
  33. ^ De Vynck, Gerrit (2 January 2023). "Caroline Ellison wanted to make a difference. Now she's facing prison". Washington Post. Archived from the original on 4 January 2023. Retrieved 4 January 2023.
  34. ^ Wise, Aaron (2023-01-30). "How did so many Jane Street traders wind up at FTX?". Protos. Archived from the original on 2023-10-04. Retrieved 2023-10-18.
  35. ^ Schapiro, Rich (February 8, 2025). "How did a German math genius get drawn into a 'cult' accused in coast-to-coast killings?". NBC News. Archived from the original on February 15, 2025. Retrieved 2025-04-10.
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