Indian stock markets closed lower on Friday, January 9, with the Sensex falling over 600 points and the Nifty 50 shedding nearly 194 points. Several companies, including major IT firms like TCS and HCL Technologies, are set to report their third-quarter earnings. Avenue Supermarts reported increased profit and revenue for the December quarter, though its CEO will complete his tenure on January 31, 2026. Other stocks like NTPC and Tejas Networks are also being watched due to potential regulatory and operational developments.