Open interest on Strike Price above 35500 of Calls is 43 lakhs and Put below side 32 Lakks. At 35500 to be precise call OI is 13.42 lakhs Put on same stike price is 9 Lakhs PCR of this expiry is 0.63 which shows bank nifty is shorted heavily and it will not cross 35500 but it can go to the next support level 35050. So you should buy puts of 35200 naked to make the ride of the bank nifty.
Note this is only short term till 10th June. Bank nifty has to go upto 36000 which you will soon see.
Also today SGX nifty is down by 25 points so we should see a gap down opening.