Day trading guide for today: Indian shares gained on Wednesday as global markets’ increased risk appetite was aided by easing in the banking industry. The BSE Sensex gained 346 points to 57,960, while the Nifty 50 index gained 129 points to 17,080. The Nifty Bank index gained 342 points to 39,910 at the close. Both the small-cap and mid-cap indices performed better than major benchmark indices in the overall market, gaining over 1.65% each. NSE cash market volume was at its highest in six months on the day of F&O expiration, while NSE F&O volume was at its lowest in three months.