Jane Street Scrutiny in India Puts Secretive Firm in the Spotlight

One of Wall Street’s most enigmatic powerhouses is suddenly under the glare of global attention. Jane Street, the ultra-profitable, famously secretive trading firm, is now facing regulatory heat in India a development that could ripple through the global high-frequency trading industry.
On Bloomberg’s Big Take podcast, host Sarah Holder and Bloomberg finance reporter Katherine Doherty unpack how Jane Street found itself in the crosshairs of India’s top financial watchdog, and what it means for a firm that has quietly shaped markets from behind the scenes.
Behind the Curtain of a Financial Giant
Unless you’re deep in the world of finance, you might not know Jane Street but odds are, your trades have passed through its systems. Whether investing through Robinhood or your retirement fund, Jane Street may be the invisible middleman, facilitating billions of daily transactions globally. The firm’s business is all about speed and scale a classic high-frequency trading (HFT) model where milliseconds matter, and profits are made on razor-thin margins.
“Jane Street is connected to all of the pipes, all of the plumbing of the market,” Doherty explains.
In 2024, Jane Street reported a jaw-dropping $20.5 billion in revenue nearly double its 2023 figures thanks largely to its unmatched trading tech, rapid-fire algorithms, and elite team of mathematically gifted problem-solvers. These teams are known for playing poker, solving complex puzzles, and writing custom code in a language only a few understand. But with great growth comes great scrutiny.
India’s Market Boom and Regulatory Red Flag
India’s options market has exploded in recent years, with millions of retail investors entering the fray. Jane Street saw a golden opportunity and capitalized, raking in over $4 billion in the country in just over two years. But that level of success triggered curiosity and concern from India’s market regulator, the Securities and Exchange Board of India (SEBI).
The scrutiny began after a lawsuit between Jane Street and former employees revealed the massive profits the firm made in India. SEBI began investigating whether Jane Street was manipulating Indian markets by exploiting its size and strategic trades across correlated markets specifically, options and equities. The regulator alleged that the firm placed such large trades in one market that it distorted pricing in the other, generating unlawful gains.
Jane Street has pushed back, arguing that its actions constitute legal arbitrage exploiting price inefficiencies to bring markets closer to their true value. Still, SEBI ordered the seizure of $570 million in profits and temporarily banned Jane Street from India’s securities market.
A Precedent for Global Market Makers?
Jane Street has set aside the $570 million in an escrow account and paused its Indian options trading while the investigation unfolds. But the implications go far beyond India.
Doherty notes that other regulators around the world are now taking notice. “Regulators don’t want to be asleep at the wheel,” she says. Peers of Jane Street including major market makers like Citadel Securities and Susquehanna are also revisiting their trading strategies to ensure they won’t attract similar scrutiny.
Although Jane Street has never been a traditional bank and thus avoids some of the heavy regulations faced by the likes of JPMorgan or Goldman Sachs this incident may signal a shift. Governments and regulators could begin reevaluating how much oversight firms like Jane Street should face, especially as they play increasingly central roles in global markets.
Still a Force in Global Finance
Despite the setback in India, few believe Jane Street’s dominance is truly under threat. Their tech advantage, talent pool, and market entrenchment mean they’re likely to weather this storm. But this investigation may mark a turning point a moment when the secretive strategies of high-frequency traders face a new era of transparency and accountability.
As Sarah Holder puts it on The Big Take, “What could this scrutiny of Jane Street mean for the entire high-frequency trading, market-making industry?” The answer: potentially everything.