The proposed overall current schedule will change Tuesday for the Sensex of the BSE and Thursday for the NSE Nifty, with only an index termination every two weeks.
The regulator is expected to assess the effect of recent steps on the activity of options in the next week before deciding whether to proceed with the plan. If the volume is high or just a minor refusal, this proposal can obtain traction in Sebi’s regulatory framework through the advisor process, the report states.
Jane Street Builds Pressure Between Fa All Lout
The Sebi was discussed just a few days after the US -based Jane Street Group and four affiliated organizations of Indian markets were banned, alleging the manipulation of the trading firm of the trading firm of the sequence of the sequence of 18 days and the unprofessional profitable from the trade of options. The regulator has paid Rs. 4,840 crore has been ordered.
Living events
Sebi’s 105-Pana interim order describes how Pay FIRM runs an aggressive, high-volume trade in more than 40 index stocks, including bank Nifty and Nifty 50 components, discovering prices in the days of termination.
On January 17, 2024, Jane Street allegedly made Rs 735 crore in the same session, which used Sebi to call Sebi’s “intra-day index manipulation” strategy: first pushed prices to the price and then aggressively trigger the drop, gaining a windfall profit.
The Jane Street episode features weaknesses in India’s derivatives markets, where retail partnerships have increased, and sophisticated players use a finished-day strategy to get the edge. Sebi noted that Jane Street “The biggest risks in the” cash equivalent ‘terms “in the index derivatives, especially in the termination, were constantly running.
Already in place, but holds volumes
To overcome the rising risks, SEBI introduced a series of steps that began in October Catber 2023. These include limiting each exchange to a weekly termination and increasing the size of the index derivatives from Rs 5-10 lakh to 15-20 lakh. In May 2025, the regulator tightened the rules to move towards the future equivalent system instead of a fantasy standard to limit the contact, to calculate the open interest.
Despite these efforts, the turnover remains elevated. In the week ended June 27, the Nifty Index options Premium Turnover on Thursday at Rs 80,732 crore. A recent study of Sebi found that premium turnover was down 9% between December 2024 and May 2025 compared to the last six months, 14% higher than the same period two years ago.
Retail partnership, though below its top, continues to run activity. The number of individual traders in the equity derivatives segment has dropped by 20% annually but increased 24% over two years ago. SEBI has noted that 91% of individual traders made a net loss in FY 25, which is a reflection of last year’s trends.
Also read | In 1 day, Rs. 735 crores! Jane Street’s most profitable day on Dalal Street was built on the fall of Nifty Bank
Shares attached to derivatives
Regulatory tests have boosted investors in stocks related to capital market. On Tuesday, BSE shares fell 6% to the highest record of Rs. Angel One declined 3.6%, while 360 1 lost 2.6%, however, the widespread market increased.
The report states that on Tuesday, the premium turnover was Rs 19,684 crore in the termination of the BSE Sensex options, the lowest since May 6, which suggests some initial signs of caution in traders, the report said.
Earlier this week, Jefferies said that Jane Street may have contributed 1% to BSE derivatives turnover. Now the Nifty of Thursday focuses on the expiry of 50 options, where Jane Street’s presence is believed to be significant.
As SEBI monitors data, if recent steps fail to cool the market, the possibility of a fortnight to expire may soon move from discussion to implementation. For now, the message of the regulator is clear: the end-day excess will no longer be unchecked.
Also read | Jane Street Clampdown raises big questions for Sebi: Can the regulator prevent other derivatives fraud?
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