Stock Market Today: Headline indices started the week on a positive note as they opened in the green on June 9. The Sensex opened at 82574.55, levels up by 0.48 per cent or 385.56 points. The Nifty opened at 25160.1, levels up by 157.05 points or 0.62 per cent. Soon after the market opened, the Sensex gained 0.58 per cent to an early high at 82,669 levels, and the Nifty gained 0.62 per cent to trade at an early high of 25,160.1 levels.