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
28 holdings in all 2 funds| Fund | JMUB | MUST | Positions | Holdings |
|---|---|---|---|---|
| JMUBJPMorgan Municipal ETF | — | 2% 28 shared |
2,176 | as of Oct 21, 2026issuer data |
| MUSTColumbia Multi-Sector Municipal Income ETF | 2% 28 shared | — | 645 | as of Jul 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
1.6% common weight| Holding | JMUB | MUST | Smallest |
|---|---|---|---|
| OHIO ST WTR DEV 5% 06/29, due Jun 1, 2029 | 0.20% | 0.28% | 0.20% |
| CAMPBELL 3.625% 07/39, due Jul 15, 2039 | 0.27% | 0.19% | 0.19% |
| BALDWIN CNTY VAR 06/55, due Jun 1, 2055 | 0.25% | 0.17% | 0.17% |
| COLORADO HEALTH 5% 08/44, due Aug 1, 2044 | 0.14% | 0.20% | 0.14% |
| DENVER COLO CITY 5% 11/37, due Nov 15, 2037 | 0.10% | 0.18% | 0.10% |
| NORTH TEX MUN 5% 09/35, due Sep 1, 2035 | 0.09% | 0.19% | 0.09% |
| MISSOURI ST 2.75% 09/33, due Sep 1, 2033 | 0.08% | 0.15% | 0.08% |
| NEW YORK TRANSN 5% 10/40, due Oct 1, 2040 | 0.06% | 0.17% | 0.06% |
| LONG IS PWR AUTH 5% 09/34, due Sep 1, 2034 | 0.06% | 0.16% | 0.06% |
| KANSAS CITY MO 5% 03/39, due Mar 1, 2039 | 0.05% | 0.21% | 0.05% |
| NEW YORK ST DORM 5% 10/33, due Oct 1, 2033 | 0.04% | 0.47% | 0.04% |
| OHIO ST WTR DEV 5% 12/35, due Dec 1, 2035 | 0.04% | 0.24% | 0.04% |
| COLORADO HEALTH 4% 08/49, due Aug 1, 2049 | 0.04% | 0.07% | 0.04% |
| NORTH TEX TWY 5% 01/39, due Jan 1, 2039 | 0.04% | 0.12% | 0.04% |
| LONG IS PWR AUTH 5% 09/35, due Sep 1, 2035 | 0.04% | 0.21% | 0.04% |
| NEW YORK TRANSN 3% 08/31, due Aug 1, 2031 | 0.03% | 0.04% | 0.03% |
| TRIBOROUGH ZERO 11/32, due Nov 15, 2032 | 0.08% | 0.03% | 0.03% |
| NEW YORK TRANSN 5% 01/34, due Jan 1, 2034 | 0.26% | 0.03% | 0.03% |
| ILLINOIS ST TOLL 5% 01/38, due Jan 1, 2038 | 0.03% | 0.39% | 0.03% |
| ATLANTA GA ARPT 4% 07/37, due Jul 1, 2037 | 0.03% | 0.17% | 0.03% |
| MARYLAND ST GO 5% 06/34, due Jun 1, 2034 | 0.02% | 0.19% | 0.02% |
| COLORADO HEALTH 4% 08/37, due Aug 1, 2037 | 0.02% | 0.06% | 0.02% |
| TEXAS WTR DEV 5% 04/33, due Apr 15, 2033 | 0.01% | 0.37% | 0.01% |
| PENNSYLVANIA ST 5% 12/33, due Dec 1, 2033 | 0.01% | 0.20% | 0.01% |
| DENVER COLO CITY 5% 11/32, due Nov 15, 2032 | 0.01% | 0.17% | 0.01% |
| NEW HOPE 5.25% 01/40, due Jan 1, 2040 | 0.01% | 0.17% | 0.01% |
| DETROIT MICH 5% 04/46, due Apr 1, 2046 | 0.01% | 0.12% | 0.01% |
| PENNSYLVANIA ST 4% 12/43, due Dec 1, 2043 | 0.01% | 0.24% | 0.01% |
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.