Bank Nifty has been performing poorly compared to the Nifty, with prices showing a 'bearish engulfing' pattern on February 2. The Nifty has reached lifetime highs, but Bank Nifty is still 2,000 points lower. A close below the 'bearish engulfing' low of 45,900 would signal a downturn. The short-term support for Bank Nifty is at 45,700, with a potential move to 45,050 if broken.