SEBI Accuses Jane Street of $4.3 Billion India Index Manipulation for Options Profit
Updated
Updated · Bloomberg · Sep 17
SEBI Accuses Jane Street of $4.3 Billion India Index Manipulation for Options Profit
3 articles · Updated · Bloomberg · Sep 17
Summary
SEBI says Jane Street used a two-part trading strategy on Indian options-expiry days, buying bank stocks and futures in the morning and selling them later to move the Nifty Bank index.
The regulator alleges that let the firm profit from bearish index-options positions; on Jan. 17, 2024 alone, it says Jane Street made 7.35 billion rupees.
SEBI in July barred Jane Street from Indian securities trading and froze more than 48 billion rupees in alleged gains, though the firm later deposited 48.4 billion rupees in escrow and appealed.
Jane Street denies wrongdoing, calling the trades basic index arbitrage, while the case lands after India's options boom drew 85 billion contracts in 2023 and left 9 in 10 retail futures-and-options traders losing money.
Will SEBI's radical overhaul of expiry-day settlement rules truly stop predatory algorithms, or are institutional giants destined to outsmart the system?
How did a Wall Street quant firm allegedly siphon billions from India's smartphone-wielding retail traders before regulators pulled the plug?
With retail losses surpassing ₹91,000 crore in FY26 despite strict curbs, is India's derivatives market structurally rigged against everyday investors?
The ₹4,843 Crore Showdown: How SEBI’s Crackdown on Jane Street Reshaped India’s $5 Trillion Derivatives Market
Overview
In July 2025, SEBI accused Jane Street of manipulating India’s derivatives market, freezing its assets and imposing a trading ban. Jane Street responded by depositing the disputed funds in escrow, leading SEBI to lift the ban, but the firm chose not to resume trading, effectively exiting the market. This exit triggered a sharp liquidity crunch on the NSE, with weekly expiry day turnover dropping by 35%. SEBI’s aggressive enforcement and subsequent regulatory reforms, including tighter trading rules and higher taxes, were closely watched by global trading firms. The case set a powerful precedent, highlighting the risks and regulatory challenges of high-frequency trading in emerging markets.