Mumbai, July 4 -- The Securities and Exchange Board of India (SEBI) has barred U.S.-based trading firm Jane Street Group and its affiliated entities from accessing the Indian securities market, citing alleged manipulation of the benchmark Nifty 50 index.

In an interim order, the market regulator stated that Jane Street and its entities are prohibited from buying, selling, or otherwise dealing in securities, either directly or indirectly.

SEBI has also ordered the impounding of alleged unlawful gains amounting to over Rs 4,843.57 crore. The regulator claimed the firm used sophisticated strategies to artificially influence the Nifty 50 index, enabling it to profit from significantly larger positions in index options.

Additionally, Indian...