I would like to compare a set of homogeneous mutual funds. By homogeneous I mean mutual funds that have a similar investment strategy.
Unfortunately, I cannot find a good paper where homogeneous funds are compared with each other, so that I do not know if there is a generally accepted method to measure for homogeneity.
I was thinking about looking at the tracking error of a specific period of time and group funds based on their tracking error.
Another method would be looking at R² of a regression including the fund's return as DV and the benchmark return as IV.
I would appreciate any advice!