16900-18120 is a consolidation zone on daily frame. Hence, for intraday as the market approaches the area of value i.e,16900,be cautious and preferably look for reversal after confirming it with Price - Volume relationship.
HDFC Bank as seen , is clearly at a trendline support in a daily chart indicating the presence of buyers . Therefore current uptrend is intact .
The above views are for educational purpose. Please consult your financial advisor before investing . You are responsible for your own actions and money.