01/06/2026
The Hidden Risk: Return Concentration
Many investors celebrate when a fund beats its benchmark.
Few ask how it did it.
If a large part of a fund's outperformance comes from just 2-3 stocks, the result may look impressive, but the portfolio could be more fragile than it appears.
This is where alpha sources matter.
Alpha is the excess return a fund generates over its benchmark. An alpha source is the stock, sector, theme, or investment decision that creates that excess return.
If most of a fund's alpha comes from a handful of holdings, future performance may become heavily dependent on those positions continuing to outperform.
A diversified set of alpha sources is often more sustainable than alpha generated by a few winners.
The next time you review a fund, don't just look at returns.
Ask:
👉 Where did the alpha come from?
👉 How many holdings contributed to it?
Because the quality of returns matters as much as the quantity.
Do you check a fund's alpha sources before investing, or do you focus primarily on past returns? Share your view in the comments.