BENGALURU, Oct 26 (Reuters) - Indian shares opened lower on Thursday, dragged by information technology (IT) stocks after Tech Mahindra's disappointing earnings, while worries over elevated U.S. Treasury yields and the Middle East conflict hurt sentiment.

The NSE Nifty 50 index was down 0.49% at 19,028.75 as of 9:17 a.m. IST, and the S&P BSE Sensex fell 0.52% to 63,714.78

(Reporting by Bharath Rajeswaran in Bengaluru; Editing by Varun H K)