Stock market today, Sept. 19 -- The benchmark Nifty-50 index, maintaining its positive momentum, gained 0.37% on Thursday to close at 25,423.60. The Bank Nifty, at 55,727.45, gained 0.42%. Pharma and IT were key gainers. The mid- and small-caps also gained 0.29-0.36%. For Nifty, support is placed at 25,300 and 25,150. Crucial resistance is seen at 25,500. A decisive move above this level could trigger a rally towards 26,000, said Rupak De, Senior Technical Analyst at LKP Securities.