** Tata Consultancy Services gains as much as 2.4 pct; while main NSE index down 0.15 pct
** India's biggest software services exporter on Thursday posted an 8 pct rise in Sept-qtr profit, beating estimates
** Outlook remains subdued due to uncertainty surrounding the U.S. elections and Britain's decision to leave the European Union
** TCS warned in Sept that its financial sector clients were holding back on discretionary spending
** TCS, with a resilient portfolio mix, low price positioning and strong client connect, is most insulated from the weak demand environment, say analysts at Ambit Capital
** Brokerage maintains FY17-18 earnings estimates and target price of 2,900 rupees, rating as "buy"
** In contrast, rival Infosys shares slump 5.3 pct after company lowers FY17 revenue guidance (Reporting by Aastha Agnihotri in Bengaluru)