ETF Overlap Tool
Enter up to six ETFs to see how much of each is the same securities. Overlap by weight is the sum, over every holding two funds share, of the smaller of the two weights: 100% means identical portfolios, 0% means nothing in common.
Overlap by weight
38 holdings in all 2 funds| Fund | BIV | TMB | Positions | Holdings |
|---|---|---|---|---|
| BIVVanguard Intermediate-Term Bond ETF | — | 8% 38 shared |
2,377 | as of Sep 30, 2026issuer data |
| TMBThornburg Multi Sector Bond ETF | 8% 38 shared | — | 554 | as of May 31, 2026SEC filing |
Each cell: overlap by weight, and how many positions the two funds share. Stocks, funds and bonds are compared, a bond by its own identifier and a Treasury bill by its maturity date; cash and derivatives are not, and a fund that is partly either shows how much of it is compared.
Held by both funds
7.9% common weight| Holding | BIV | TMB | Smallest |
|---|---|---|---|
| United States Treasury Note/Bond 4.375%, due May 15, 2036 | 2.06% | 3.67% | 2.06% |
| United States Treasury Note/Bond 4.125%, due Feb 15, 2036 | 2.05% | 4.49% | 2.05% |
| United States Treasury Note/Bond 4.625%, due Feb 15, 2035 | 2.09% | 1.62% | 1.62% |
| United States Treasury Note/Bond 3.75%, due Feb 28, 2033 | 1.23% | 3.94% | 1.23% |
| United States Treasury Note/Bond 4.25%, due Nov 15, 2034 | 2.07% | 0.32% | 0.32% |
| United States Treasury Note/Bond 4%, due Jun 30, 2032 | 0.75% | 0.08% | 0.08% |
| Amazon.com Inc 4.55%, due Mar 13, 2033 | 0.07% | 0.20% | 0.07% |
| Aon North America Inc 5.45%, due Mar 1, 2034 | 0.03% | 0.22% | 0.03% |
| Ameren Corp 5.375%, due Mar 15, 2035 | 0.03% | 0.11% | 0.03% |
| Altria Group Inc 2.45%, due Feb 4, 2032 | 0.03% | 0.19% | 0.03% |
| Oracle Corp 5.25%, due Feb 3, 2032 | 0.03% | 0.06% | 0.03% |
| Paychex Inc 5.35%, due Apr 15, 2032 | 0.02% | 0.14% | 0.02% |
| BAT Capital Corp 4.625%, due Mar 22, 2033 | 0.02% | 0.22% | 0.02% |
| RenaissanceRe Holdings Ltd 5.75%, due Jun 5, 2033 | 0.02% | 0.19% | 0.02% |
| MPLX LP 4.95%, due Sep 1, 2032 | 0.02% | 0.17% | 0.02% |
| Flex Ltd 5.25%, due Jan 15, 2032 | 0.01% | 0.09% | 0.01% |
| Public Service Co of Oklahoma 5.45%, due Jan 15, 2036 | 0.01% | 0.16% | 0.01% |
| Brown & Brown Inc 5.65%, due Jun 11, 2034 | 0.01% | 0.24% | 0.01% |
| CNO Financial Group Inc 6.45%, due Jun 15, 2034 | 0.01% | 0.19% | 0.01% |
| Arizona Public Service Co 5.7%, due Aug 15, 2034 | 0.01% | 0.15% | 0.01% |
| Brookfield Asset Management Ltd 5.795%, due Apr 24, 2035 | 0.01% | 0.06% | 0.01% |
| NetApp Inc 5.5%, due Mar 17, 2032 | 0.01% | 0.20% | 0.01% |
| PPL Capital Funding Inc 5.25%, due Sep 1, 2034 | 0.01% | 0.16% | 0.01% |
| Mobility Global Inc 6.05%, due Jun 15, 2036 | 0.01% | 0.06% | 0.01% |
| Willis North America Inc 5.35%, due May 15, 2033 | 0.01% | 0.12% | 0.01% |
| Old Republic International Corp 5.7%, due Jun 1, 2036 | 0.01% | 0.15% | 0.01% |
| Evergy Kansas Central Inc 5.25%, due Mar 15, 2035 | 0.01% | 0.24% | 0.01% |
| Southern Co Gas Capital Corp 5.15%, due Sep 15, 2032 | 0.01% | 0.13% | 0.01% |
| AEP Texas Inc 5.2%, due Apr 15, 2036 | 0.01% | 0.04% | 0.01% |
| VeriSign Inc 5.25%, due Jun 1, 2032 | 0.01% | 0.24% | 0.01% |
| DTE Energy Co 5.05%, due Oct 1, 2035 | 0.01% | 0.11% | 0.01% |
| Entergy Arkansas LLC 5.45%, due Jun 1, 2034 | 0.01% | 0.14% | 0.01% |
| Stewart Information Services Corp 3.6%, due Nov 15, 2031 | 0.01% | 0.16% | 0.01% |
| LKQ Corp 6.25%, due Jun 15, 2033 | 0.01% | 0.17% | 0.01% |
| nVent Finance Sarl 2.75%, due Nov 15, 2031 | 0.01% | 0.15% | 0.01% |
| Public Service Electric and Gas Co 5.2%, due Aug 1, 2033 | 0.01% | 0.05% | 0.01% |
| Piedmont Natural Gas Co Inc 5.4%, due Jun 15, 2033 | 0.01% | 0.11% | 0.01% |
| Kinder Morgan Energy Partners LP 5.8%, due Mar 15, 2035 | 0.00% | 0.15% | 0.00% |
Reading overlap
Two funds with 80% overlap move together and holding both mostly doubles one exposure and both fees. Low overlap is not the same as diversification: two funds can share no holdings and still be driven by the same factor. To see what a whole portfolio owns, use the portfolio x-ray.
Holdings come from each issuer's daily file where we have one and otherwise from the fund's latest SEC filing, so the two sides of a comparison can be from different dates. The table shows each fund's date.
Bond funds are matched issue by issue: two Treasury funds overlap only where they hold the same bill, note or bond. A fund of short-dated bills replaces its whole portfolio every few months, so holdings from an older filing may have matured; the table says when they have.
Fund data comes from each fund's SEC filings and issuer disclosures and is shown with the date it is as of. SEC portfolio and flow filings become public about 60 days after the period they cover. Nothing here is investment advice; see Terms.