Sensex and Nifty rebounded from their respective lows and ended near day's high level on April 30. The S&P BSE Midcap index closed 1.1 percent lower while the S&P BSE Smallcap index was down 1.27 percent. Among sectors, Nifty PSU Bank declined more than 3 percent, while Metal and IT gained more than 1 percent each. Here are the top six stock ideas from brokerages which could give 14-40 percent return in medium to long term: