What Top-Ten Breadth Tells You That Top-Five Concentration Misses
Top-five concentration is useful, but top-ten breadth often gives a better sense of how much room is left outside the headline names.
Top-five concentration tells you how heavy the very front of the portfolio is. Top-ten breadth tells you how much of the portfolio still lives beyond the obvious headlines. You usually need both.
Why Top-Ten Breadth Helps
Two funds can have similar top-five concentration but very different top-ten structures. One may keep adding meaningful positions beyond the first cluster. The other may thin out quickly after the first few names.
Recent Examples
Our giant-filer breadth comparison shows this clearly. JPMorgan and Vanguard both own the big market leaders, but their top-ten structures still help distinguish how broad the filing really is.
How to Use This on 13F Insight
- Check top-five concentration first.
- Then compare it with top-ten concentration.
- If the jump from top five to top ten is large, the portfolio still has meaningful secondary positions.
- If the jump is small, the portfolio may be much more front-loaded than it looks.
What People Get Wrong
- Mistake: Top-five tells the whole story. Reality: The next five positions can still materially shape the filing.
- Mistake: Top-ten always matters more. Reality: It depends on the fund style, but it is often the better cross-fund comparison tool.
- Mistake: Similar top five means similar portfolios. Reality: The back half of the top ten often reveals important differences.
FAQ
When is top-ten breadth especially useful?
When comparing large diversified funds that own many of the same leadership names.
What does a big top-five to top-ten jump mean?
It means the next layer of positions still carries meaningful weight.
Should I always calculate both?
Yes, especially for cross-fund comparisons.
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