Sensex extends losses to 5th day, Nifty near 17,000 mark; Adani Group to invest $100 billion in next 10 years; more

After jumping nearly 560 points during the session, the 30-share BSE index ended 37.70 points lower at 57,107.52. The NSE Nifty shed 8.90 points to close at 17,007.40.