1. Expecting some retracement in BANK NIFTY from 21900-920 levels keeping in mind if it will hold 21620-640 levels.
If levels of 21620-640 is breached Bank nifty might be heading for 21200-300 from current levels.
2. Bank Nifty shows channel movement in 15min chart and if this has to continue it might retrace from levels of 21800-920 towards 22300.