I have plotted Nifty Bank in daily time frame. Here , it is clearly observed that Nifty Bank is under sliding parallel channel. Yesterday, Nifty Bank is about to cross sliding parallel channel. However, today; bear market is seen.
Anybody can take fresh short position with Nifty Bank Index based on own risk tolerance. However, one should square off his/her position as and when Nifty Bank crosses sliding parallel channel from its above.