Stocks to buy: After three consecutive sessions of gains, Nifty 50 traded lower on Tuesday, March 26, amid weak global cues and the absence of fresh domestic triggers. Nifty50 opened at 21,947.90 against its previous close of 22,096.75 and touched its intraday low of 21,947.55. Around 11:30 am, the index was 0.26 per cent down