Indian shares opened higher on Thursday after logging losses in the last three sessions, but investors remain cautious as quarterly earnings trickle in amid weak global cues. Nine of the 13 sectoral indexes advanced, with high-weightage financials and information technology (IT) stocks rising 0.3% each, respectively. HCLTech Ltd is scheduled to report its earnings later in the day, while Reliance Industries Ltd, India's biggest firm by market capitalisation, will report fourth-quarter results on Friday.