Does the Number of Holdings in a Fund Matter When Comparing Options?
A fund holding twenty companies and a fund holding two thousand can both call themselves diversified, but they behave in fairly different ways when any one holding moves sharply.
The short answer
The number of holdings in a fund is a rough proxy for how concentrated or spread out its risk is. A fund with very few holdings tends to be more affected by the performance of any single company or bond, while a fund with a very large number of holdings spreads that effect thinner. Neither extreme is automatically better — it depends on what the fund is trying to accomplish and how it fits into a broader portfolio.
Why holdings count is only a rough proxy
A count alone doesn’t capture how holdings are weighted. A fund can technically hold five hundred securities but have its top ten positions make up a large share of total assets, in which case the effective concentration is much higher than the raw number suggests. Checking the weighting of top holdings, not just the total count, gives a more accurate read on true concentration than the number alone.
What very concentrated funds tend to look like
Funds with a small number of holdings are often built around a specific thesis — a manager’s highest-conviction picks, or a narrow sector fund theme. This can mean more pronounced swings in either direction, since strong or weak performance from a handful of companies has an outsized effect on the whole fund. It also means the fund’s fortunes are more closely tied to whether that specific thesis plays out, which introduces a different kind of risk than a broadly diversified option.
What very broad funds tend to look like
Funds holding a large number of securities, such as a total market index fund, spread exposure thinly across many companies or bonds, which tends to reduce the effect of any single holding’s performance on the fund overall. This comes with a trade-off: broad diversification also means diluting the effect of any standout performer, not just underperformers. Broad funds are more likely to track the return of the overall market or category they represent, for better or worse.
Questions worth asking when comparing holdings counts
- How concentrated are the top holdings, not just the total count? A fund’s largest positions often matter more than the number of names on the list.
- Does the strategy explain the concentration? A specialized or sector fund is expected to hold fewer, more concentrated positions than a broad market fund.
- How does this affect overlap with other funds already held? A concentrated fund can create meaningful overlap with a broader fund that already holds the same top names.
What to weigh
There’s no universally “right” number of holdings — it depends on the role a fund is meant to play in a portfolio. A concentrated fund used for a small, deliberate allocation is a different decision than the same fund used as a core holding. Looking at holdings count alongside top-holding weightings and overall portfolio fit gives a clearer picture than the raw number by itself.