mumbai, July 11 -- The capital markets regulator's investigation into alleged index manipulation by Jane Street will extend to the Sensex options contracts as well, according to two persons aware of the matter. These contracts have gained traction over the past two fiscal years. So far, the Securities and Exchange Board of India's (Sebi) interim order of 3 July has focused on 21 instances of Jane Street trades on the highly liquid but now-discontinued Bank Nifty weekly options and the Nifty weekly options between 1 January 2023 and 31 March 2025. The firm allegedly made illegal gains of Rs.4,844 crore in these trades, largely at the expense of individual investors, as per Sebi. "The investigation is ongoing and would not be limited to the N...