A study by the Securities and Exchange Board of India found that retail investors lost more than $20 billion on option trades over three years. On July 4, SEBI announced it would seize 48.4 billion rupees ($570 million) from trading giant Jane Street Group,

The regulator alleged that Jane Street bought large quantities of constituents in India's Bank Nifty index in the cash and futures markets to artificially support the index in morning trade, while simultaneously building large short positions in index options.

SEBI has barred US-based Jane Street Group from participating in the Indian stock market and ordered it to disgorge unlawful gains of ₹4,843 crore for allegedly manipulating stock indices through derivative positions.