Jane Street
| Jane Street Group, LLC | |
| Founded | 2000 |
|---|---|
| Headquarters | New York, London, Hong Kong |
| Key People | Tim Reynolds, Rob Granieri, Marc Gerstein, and Michael Jenkins, Co-Founders |
| Products | Trading in global financial products, institutional brokerage, and analysis |
| Website | https://www.janestreet.com/ |
Jane Street is a quantitative proprietary trading firm and liquidity provider that focuses on technology and collaborative problem solving. The company trades global financial products, including exchange-traded funds, equities, futures, commodities, options, bonds, and currencies. It also offers institutional brokerage and analysis services.[1] It is one of the largest market making firms in the U.S. and has dominated the ETF space.[2] It is one of a small group of firms that can create new shares of ETFs, working with the companies that issue them. Jane Street has also expanded into credit trading.
The firm has offices in New York, London and Hong Kong and employs more than 2,000 people globally. It trades asset classes in 45 countries, including debt, options, cryptocurrency and equities. It generated $20.5 billion in net trading revenue in 2024, helping it to surpass Bank of America Corp. and Citigroup Inc.[3] Jane Street’s net trading revenue in the first nine months of 2025 surpassed $24 billion, Bloomberg reported.[4]
History[edit]
Jane Street was co-founded in the early 2000s by Tim Reynolds, Rob Granieri, Marc Gerstein, and Michael Jenkins. Gerstein is a former IBM developer; the rest were traders from Susquehanna. The firm initially traded mostly options and American Depositary Receipts on the old American Stock Exchange (Amex). It became noted for trading US and international ETFs.[5]
In the 2010s, Jane Street intensified its global reach, diversifying into fixed income, commodities, options, and cryptocurrency markets. The firm has been recognized for its risk management culture and use of mathematics, coding, and algorithmic trading.[6]
In September 2020 the U.S. Federal Reserve Bank added Jane Street to the list of companies through which it would implement its corporate bond purchases, alongside JPMorgan, Morgan Stanley and Citi.[7]
The firm is one of several prop trading firms that made huge gains during the market turmoil that went along with the Covid-19 pandemic in 2020. It saw revenue grow 54% to $10.6 billion during the year ended in March 2021. The wild market created a big opportunity for firms trading hard-to-price bonds, including Jane Street, which is particularly active in bond ETFs.[8]
Jane Street sold a $1.4 billion high-yield bond deal in early 2024 to expand cash on its balance sheet, which allowed it to continue to invest in the business, according to sources cited by Bloomberg.[9]
In December of 2024, Jane Street Group and Millennium Management agreed to settle a legal dispute over two former traders' alleged theft of a "secret billion-dollar India options trading strategy," Bloomberg reported. In a filing in Manhattan federal court, the two firms said they had agreed to dismiss the case. The resolution ended a case that had raised the question of whether a trading strategy could be protected as a trade secret.[10]
In June of 2025, Jane Street co-founder Robert Granieri said he was tricked into funding an alleged coup plot to take over the government of South Sudan. His role in the alleged coup emerged during the trial of Peter Ajak, the Harvard Fellow who was accused of attempting to install himself as the leader of the East African nation.[11]
In July 2025, the Securities and Exchange Board of India (SEBI) temporarily barred Jane Street Group LLC from accessing its local securities market, alleging index manipulation. SEBI said it would seize 48.4 billion rupees ($570 million) from Jane Street, which it claimed is the total amount of “unlawful gains” the firm made. Jane Street is one of the most active foreign players in India, and the firm made $4.3 billion in trading gains there in more than two years.[12] According to SEBI, India's unusual market structure, in which the turnover in options on stocks is 300 times bigger than the underlying equities, allowed Jane Street to profit at the expense of millions of local traders. India is the world’s biggest options market by volume.[13]
In February 2026, the administrator winding down Do Kwon’s Terraform Labs sued Jane Street, alleging that it engaged in insider trading to profit unlawfully from Terraform, ultimately hastening the crypto firm’s collapse. Todd Snyder, the plan administrator appointed by a bankruptcy court, is seeking damages from Jane Street, its co-founder Robert Granieri, and employees Bryce Pratt and Michael Huang.[14]
Issues and Trading Ban in India[edit]
In July 2025, Jane Street faced significant regulatory challenges in India after the Securities and Exchange Board of India (SEBI) accused it of market manipulation on the country’s leading stock exchanges. SEBI alleged that Jane Street employed trading strategies that deliberately influenced the prices of the Bank Nifty index and related derivatives. According to SEBI, the firm orchestrated large positions in both the cash and derivatives markets, leveraging these trades to “mark the close” and generate substantial profits at the expense of small retail investors, who subsequently traded at unfavorable prices.[15] SEBI stated in its order that Jane Street’s actions amounted to manipulation leading to an “artificial and temporary” distortion of the market, undermining investor confidence.{[16]
As a result, SEBI imposed an interim ban on Jane Street, preventing the firm and its affiliates from buying or selling securities on Indian exchanges and freezing approximately $567 million of its funds. The allegations sparked intense debate over the fine line between legal arbitrage and illegal market manipulation, as Jane Street maintained that its trades were legitimate and complied with prevailing market rules.[17] The firm publicly disputed SEBI’s findings and signaled its intent to contest the ban in the legal system.[18]
Jane Street subsequently deposited over $560 million in an escrow account with a lien for SEBI—without prejudice to its legal position—fulfilling a regulatory requirement in hopes of lifting the ban. Following this deposit, SEBI announced that the interim order’s restrictions would be removed, though Indian exchanges had yet to allow Jane Street’s trades to resume in practice.[19] The firm agreed not to engage in certain derivatives or cash-market trading until further discussions with SEBI clarified the nature of its positions.[20]
The case remains under active investigation and is considered one of the most high-profile regulatory actions in India’s rapidly growing derivatives market, drawing international attention to the challenges of policing advanced trading strategies in markets with large and vulnerable retail investor bases.[21]
Relationship with Sam Bankman-Fried[edit]
Sam Bankman-Fried, the founder of FTX and a prominent figure in cryptocurrency, began his career at Jane Street Capital immediately after graduating from MIT in 2014. Selected for his strong quantitative and analytical abilities, he excelled during Jane Street's intensive interview process, which emphasized probability games and quick, logical decision-making under pressure.
During his three-year tenure at Jane Street, Bankman-Fried was considered one of the firm’s top young traders. Notably, he developed a predictive trading system for the 2016 U.S. presidential election, which enabled Jane Street to call results in key states minutes ahead of major news outlets such as CNN. Initially, their trading strategy yielded large profits, but as the markets reversed, Jane Street experienced what has been described as the single largest loss in its history, with a reversal from a $300 million profit to a $300 million loss on the night of the election.[22][23][24][25]
Despite being on track for a lucrative future at the firm—including a seven-figure bonus and prospects of rapid advancement—Bankman-Fried chose to leave Jane Street in 2017. He was motivated by his interest in effective altruism and the burgeoning opportunities in cryptocurrency, which he saw as a frontier offering greater potential for both financial gain and charitable giving. This led him to establish Alameda Research, and later, FTX—ventures that drew on the risk management and quantitative trading principles honed during his time at Jane Street.[26][27]
Bankman-Fried also maintained personal and professional relationships from Jane Street, most notably with Caroline Ellison, who would go on to play a significant role in Alameda Research and later became a central figure in the FTX collapse.[28]
Jane Street’s culture of intellectual rigor and innovation has often been cited as foundational to Bankman-Fried’s trading style and business philosophy, even as his later career became marked by controversy and legal challenges.[29][30]
Key People[edit]
Tim Reynolds, Robert Granieri, Marc Gerstein, and Michael Jenkins - Co-Founders
References[edit]
- ↑ Jane Street Group LLC. Bloomberg.
- ↑ Citadel Securities, Jane Street on Track for Record Revenue Haul. Bloomberg.
- ↑ Jane Street Boss Says He Was Duped Into Funding AK-47s for Coup. Bloomberg.
- ↑ Citadel Securities Nets Record $12 Billion Trading Haul. Bloomberg.
- ↑ Why Jane Street Capital co-founder went from Wall St to building art schools. Forbes.
- ↑ Jane Street Chooses New Leaders as Co-founder Steps Back. Wall Street Journal.
- ↑ Jane Street: the top Wall Street firm ‘no one’s heard of’. Financial Times.
- ↑ Jane Street, DRW Traders Made Billions as Virus Hit Markets. Bloomberg.
- ↑ Citadel Securities, Jane Street on Track for Record Revenue Haul. Bloomberg.
- ↑ Jane Street, Millennium End India Options Trade Secrets Case. Bloomberg.
- ↑ Jane Street Boss Says He Was Duped Into Funding AK-47s for Coup. Bloomberg.
- ↑ Jane Street Curbed in India After $4.3 Billion Trading Gain. Bloomberg.
- ↑ Jane Street’s Lucrative India Trade Highlights Key Market Quirk. Bloomberg.
- ↑ Jane Street Accused of Insider Trading That Helped Collapse Terraform. The Wall Street Journal.
- ↑ Why Jane Street, a US trading giant, is in trouble in India. BBC.
- ↑ {cite web |url=https://www.aljazeera.com/economy/2025/7/18/indias-ban-on-jane-street-raises-concerns-over-regulator-role%7Cname=India’s ban on Jane Street raises concerns over regulator role|org=Al Jazeera|date=July 21, 2025}}
- ↑ When does arbitrage become market manipulation? India crackdown brings issue into focus. CNBC.
- ↑ Jane Street to challenge India ban, says it engaged in basic arbitrage. CNBC.
- ↑ Jane Street Sebi ban: US trading firm barred from Indian market allowed to resume trade - here's what's happening. Times of India.
- ↑ India markets regulator allows Jane Street to resume trading. Yahoo Finance.
- ↑ Why Jane Street, a US trading giant, is in trouble in India. BBC.
- ↑ A $300 Million Election-Night Mistake. Stansberry Research.
- ↑ Sam Bankman-Fried Designed System That Called Trump 2016 Win .... Business Insider.
- ↑ How Sam Bankman-Fried passed Jane Street's bizarre interview. eFinancialCareers.
- ↑ Sam Bankman-Fried at Jane Street: Success—but Not Enough. Shortform.
- ↑ One on One: Learning from SBF. Chapelboro.com.
- ↑ 'Effective Altruism' Led Bankman-Fried to a Little-Known Wall St. Firm. The New York Times.
- ↑ Going Infinite review: The story of how Sam Bankman-Fried crashed .... Evening Standard.
- ↑ Jane Street's trading floor can be a peculiar place. eFinancialCareers.
- ↑ SBF's First Big Mishap. Matthew O'Brien CFP.