Large buy or sell orders—executed seconds before close—nudge prices just enough to swing the outcome of options and futures contracts. It’s subtle. It’s fast.

SEBI has temporarily barred Jane Street from the Indian stock market and impounded ₹4,840 crore for alleged index manipulation, raising concerns about retail traders' vulnerabilities in derivatives trading.

Speaking with reporters over the interim order against the New York-based hedge fund manager, Tuhin Kanta Pandey said surveillance has been increased both by the regulator and also at the exchange level.