Bank Nifty has made double top pattern on its weekly chart. Last week, a clear breakdown can be seen in Bank-Nifty. The chart is extremally week, hence, one can sell it on rise. The stock should come to test its previous support of 43650. Try to sell somewhere near this point in order to minimize your risk.
This is also a very good opportunity for investors to buy a very good fundamental banks. An investor with a view of 3 to 5 years should take this opportunity and buy aggressively in this fall. One can also SIP in BankBees.