The Indian markets regulator's ban on Wall Street trading giant Jane Street has squeezed volumes in the country's options market, but traders expect activity to snap back as larger investors step in.

India's top stock exchanges, NSE and BSE's market prospects have suffered following regulatory actions which includes Jane Street ban.

The drama has thrown a bright light on Jane Street, a company of legendary opacity even in an industry that prioritises secrecy. And it could carry political and regulatory consequences, not just for Jane Street,