In the volatile session, the Indian equity indices ended on a positive note with Nifty near 25,800 on January 12. At close, the Sensex was up 301.93 points or 0.36 percent at 83,878.17, and the Nifty was up 106.95 points or 0.42 percent at 25,790.25. About 1365 shares advanced, 2561 shares declined, and 158 shares unchanged