HDFC Bank as of Nov 2020 have Intrinsic Value around Rs. 1600 so it can still ride higher coupled with Facts like Growing Business, Improving Sales/Profit/EPS & Higher Interest Coverage Ratio.
Plus, the current Corona Improvement scenarios coupled with US Election Victory would Accelerate the Vaccine Availability & So next 1-2 year we could see the Banking Stocks at Real Peak along with EPS growth & Higher Intrinsic Value around Rs. 2000.
So the recommendation would be hold for 1-2 year more to gain more returns.