HDFC is on it's highest ever profit, revenue but the stock has been trading near these levels for the last 4.5-5 years. Recently after, It's accumulation by MSCI Emerging Markets Index has breeched it's ATH. The Stock might see a reversal from the prev. ATH.
Fib shows a great level to accumulate at CMP 1784, there might and should be a further pull back till 1720. The target according to the golden ratio is 2050.