Nifty plunged by 303 points on the back of selling mainly in technology, pharma and banking stocks to close at 17,214 levels, lowest since December 27. In the last three sessions, the Nifty has fallen more than 600 points from a high of 17,781 levels. Short-term trend turned bearish as the Nifty has closed below its 20, 50 and 100-day EMA (exponential moving average).