SEBI JPMorgan Ban: Sensex Case

SEBI JPMorgan Ban: ₹3.7 Crore Seized Over Sensex Market Manipulation

Markets

The SEBI JPMorgan ban targets a Mauritius-based unit over alleged Sensex market manipulation, with ₹3.7 crore in gains impounded by the regulator.

SEBI bans JPMorgan’s Mauritius unit over alleged Sensex market manipulation.
₹3.7 crore seized as alleged wrongful gains from the trades.
Massive orders dominated some stocks, exceeding 90% of total orders before cancellations.
Trades matched Sensex options positions, raising fresh manipulation concerns.
India’s new closing auction system faces scrutiny over price-control risks.

India’s market regulator has hit JPMorgan Chase & Co. with a fresh trading setback. The SEBI JPMorgan ban blocks the financial giant’s Mauritius-based unit from the capital market after allegations that it manipulated India’s new closing auction system.

The Securities and Exchange Board of India (SEBI) has impounded ₹3.7 crore in alleged wrongful gains linked to JPMorgan’s Copthall Mauritius Investment Ltd. and Mumbai-based Mansi Share and Stock Broking Ltd., according to an initial order issued Wednesday.

SEBI board member Kamlesh Varshney said the firms traded aggressively during the August 13 closing auction to influence the indicative equilibrium price of the BSE Sensex and benefit their options positions.

The regulator’s 46-page order says the firms placed huge buy and sell orders in Sensex stocks. In some securities, their orders represented more than 90% of all orders. Large portions were then cancelled, affecting indicative closing prices without the trades being fully executed.

SEBI said the trading pattern matched the firms’ expiry-day Sensex options positions. According to the regulator, the orders and cancellations helped the firms avoid losses or potentially make wrongful gains on derivatives positions that could otherwise have expired worthless.

The SEBI action comes just weeks after India introduced its new auction-based system for determining closing prices across more than 200 stocks. The mechanism was designed to improve price discovery, bring Indian markets closer to global standards and reduce opportunities for manipulation.

Nevertheless, the new system has already faced criticism after unexplained spikes appeared in stock benchmarks during closing sessions.

The JPMorgan ban also adds to growing regulatory scrutiny of sophisticated trading strategies in India. Last year, SEBI accused US proprietary trading firm Jane Street Group of market manipulation. Jane Street has denied the allegations and is challenging the matter in an Indian court.

Copthall Mauritius and Mansi Share now have 21 days to respond to SEBI’s allegations and request a personal hearing.

The case could have implications beyond JPMorgan India. As India’s equity and derivatives markets grow more complex, regulators must balance fast, sophisticated trading with fair price discovery. For global institutions, the message is increasingly direct: aggressive strategies may attract intense scrutiny when they appear capable of moving benchmark prices.

The final outcome of the SEBI ban will depend on the firms’ responses and SEBI’s proceedings. Business Honor asks how much influence should any trader have over the price that millions of investors see, as the market is official close?