AS for HDFC funds, most likely, the investment strategy of the fund did not work out. However, to say they are not performing would be incorrect. They have outperformed their respective benchmarks. But other funds have done comparatively better in the last few years.
I am not sure what is an oversized fund. I personally believe there is no mathematical formula to find out the right or good fund. It is a combination of things. At the end of it, a personal preference does come into picture. I would for example, place a high weightage to the character of a fund / fund house. That’s where funds like Quantum or PPFAS score a lot.
Hope this doesn’t read like a rant. Thanks for reading.