Indian shares on Thursday registered their first weekly loss for the month and ended the day lower, hurt by a downturn in technology and automobile stocks, while digital payments company Paytm dropped over 25% in its market debut. The blue-chip NSE Nifty 50 index (.NSEI) fell 0.75% to 17,764.8, while the benchmark S&P BSE Sensex (.BSESN) was down 0.62% at 59,636.01. The two indexes closed the holiday-truncated week nearly 2% lower to snap three consecutive weeks of gains, as global inflation worries and valuation concerns soured investor sentiment. Paytm, backed by China"s Ant Group and Japan"s SoftBank, dropped over 25%, with investors questioning the lofty valuations it gained in the country"s largest-ever initial public offering. read more Auto stocks (.NIFTYAUTO) were the biggest losers among sectors, dropping over 2% to snap two straight sessions of wins, with Tata Motors (TAMO.NS) tumbling nearly 4% to lead losses on the Nifty 50 index. Tech stocks (.NIFTYIT) fell nearly 2%, with HCL Technologies (HCLT.NS) dropping nearly 3% at close. Sapphire Foods India (SAPI.NS), a domestic franchisee of KFC and Pizza Hut operator Yum Brands (YUM.N), gained 2.7% in its market debut. Meanwhile, agro machinery maker Escorts Ltd (ESCO.NS) jumped to a record high after Japan"s Kubota Corp (6326.T) said it will raise its stake in the company to as much as 44.8%. read more State-owned loss-making telecom firm Mahanagar Telephone Nigam Ltd (MTNL.NS) soared as much as 15% after news reports of a government package worth nearly 1.3 trillion rupees ($17.54 billion) to revive state-run telecom companies. read more