AGG vs BND vs VTI: 2.4 Effective Funds
Held in equal weight, AGG, BND, VTI behave like 2.4 funds rather than 3. Every figure below is computed from the funds' current published holdings.
Different holding dates. These holdings were published 34 days apart — BND, VTI as of 2026-06-30, the rest through 2026-08-03. Each fund is compared using its most recent file, so any trading in between shows up as a difference.
Three tickers, and the diversification of 2.4. Three funds sharing nothing would score 3.0; three identical funds score 1.0.
How the three compare
Where the duplication is
The combined figure above hides which pair is responsible. Each row is the overlap between two of the three, computed as Σ min(wA, wB).
| Pair | Overlap | |
|---|---|---|
| AGG vs BND | 93.9% | |
| AGG vs VTI | 0.6% | |
| BND vs VTI | 0.6% |
The most duplicated pair is AGG and BND at 93.9%.
Held by all three
The positions that appear in AGG, BND, VTI together — 0.6% of a portfolio split equally between them, by the same min-sum rule.
| Holding | Smallest of the three weights |
|---|---|
| CASH | 0.63% |
Frequently asked
How much do AGG, BND, VTI overlap?
Held in equal weight, AGG, BND, VTI behave like 2.4 funds rather than 3. AGG and BND overlap 93.9%; AGG and VTI overlap 0.6%; BND and VTI overlap 0.6%. Each figure is the sum of the smaller weight in each fund over every holding both own.
Which two of AGG, BND, VTI are most alike?
AGG and BND, at 93.9% by weight. That pair contributes most of the duplication in the combined figure above.
What does "2.4 Effective Funds" mean?
It is the number of genuinely independent funds this combination behaves like. Three funds sharing no holdings would score 3.0; three identical funds score 1.0. It is computed from the pairwise overlaps above, weighting each fund equally, and it is a measurement rather than a target — what counts as enough depends on what you were trying to do.
These are three funds. How many do you actually hold?
This page assumes an equal split between AGG, BND, VTI. Paste your real holdings — every account, in the proportions you actually own them — for your own Effective Funds number, the companies underneath, and what else is duplicated. Free, no account, nothing stored.
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Sources: issuer holdings files, AGG as of 2026-08-03, BND as of 2026-06-30, VTI as of 2026-06-30. Weights are fractions of each fund. Diagnostics, not advice.