In India, the Securities and Exchange Board of India (SEBI) has implemented intraday monitoring of position limits for index derivatives, starting April 1, 2025. Specifically, there are both net and gross intraday limits. For index options, the net limit is set at Rs 1,000 crore and the gross limit is Rs 2,500 crore. For index futures, the intraday limit is Rs 2,500 crore. These limits are designed to prevent excessive speculation and market manipulation
This is , if any one google it to know FNO intra day position limit , so on that basis i think 1000cr to 2500 cr is more then enough to shake or induce high volatility in the market during FNO expiry day ,legally by Jane street or any one else who are having more money , so SEBI is directly or indirectly not with the Retailers 