SEBI’s latest filing shows ₹4,843.57 cr in gains seized from four Jane Street entities after a March 2025 investigation into Bank Nifty and Nifty index manipulation. The amount eclipses the ₹4,370 cr worth of morning trades recorded on January 17, 2024, and the ₹32,114 cr options position that reportedly swung the index.
Senior Advocate Gaurav Joshi argued that Jane Street’s repeated request for additional documents was a delaying tactic, citing a 1.5‑year lag between the initial surveillance review (NSE report, 13 Nov 2024) and the formal investigation launch in March 2025. The firm’s failure to file a reply to the interim order further stalled proceedings.
SEBI’s Integrated Surveillance Department released a 10 GB dossier, including internal minutes and ISD reports, to the Securities Appellate Tribunal—an action the firm deemed excessive. Joshi likened the move to a “fishing and roving inquiry,” suggesting that every new document request opened a fresh line of questioning.
Jane Street maintains that its trades were index arbitrage, not manipulation. In July 2025 the regulator barred the group’s Indian operations and imposed the ₹4,843.57 cr freeze, lifting the ban only after the firm deposited the amount in escrow.
The upcoming hearing on Wednesday will decide whether SEBI expands restrictions or imposes further penalties. Market watchers note that similar regulatory actions often trigger volatility in related derivatives markets and could ripple into broader index performance.
Investors will monitor the tribunal’s next step; a tightening of rules could raise transaction costs for high‑frequency traders and shift liquidity away from the Bank Nifty and Nifty expiry days.
While the case is still in litigation, the seizing of nearly ₹5 cr signals SEBI’s willingness to clamp down on perceived market abuse, a precedent that may influence future regulatory scrutiny across the Indian exchange ecosystem.