Jane Street has told staff it will contest a ban by India's financial regulator which has accused the U.S. high-frequency trading giant of market manipulation, adding that its practices in question were "basic index arbitrage trading".

US-based trading firm Jane Street Group has fiercely rejected allegations of “index manipulation” by India’s securities regulator SEBI, calling its interim order “erroneous” and “inflammatory.” The firm said it is preparing a formal rebuttal and exploring legal avenues after being barred from Indian markets and ordered to return ₹4,