Stocks in news: Bharti Airtel, Tata Motors PV, HCL Tech, Jayant Infratech, NCC

Indian markets closed marginally lower on monthly expiry day amid cautious sentiment due to global headwinds and geopolitical concerns. Several stocks like Bharti Airtel, Tata Motors PV, and HCL Tech are in focus due to significant news developments, including block deals, new product launches, and strategic collaborations.