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
68 holdings in all 2 funds| Fund | JMUB | TAFM | Positions | Holdings |
|---|---|---|---|---|
| JMUBJPMorgan Municipal ETF | — | 5% 68 shared |
2,176 | as of Oct 21, 2026issuer data |
| TAFMAB Tax-Aware Intermediate Municipal ETF | 5% 68 shared | — | 564 | 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
5.3% common weight| Holding | JMUB | TAFM | Smallest |
|---|---|---|---|
| BLACK BELT VAR 03/55, due Mar 1, 2055 | 0.47% | 0.39% | 0.39% |
| BUCKEYE OHIO TOB 5% 06/55, due Jun 1, 2055 | 0.55% | 0.39% | 0.39% |
| PUERTO RICO 5% 07/58, due Jul 1, 2058 | 0.46% | 0.32% | 0.32% |
| PUBLIC FIN 5.75% 06/60, due Jun 30, 2060 | 0.32% | 0.32% | 0.32% |
| MAIN STR NAT VAR 12/52, due Dec 1, 2052 | 0.35% | 0.26% | 0.26% |
| CENTRAL PLAINS VAR 08/55, due Aug 1, 2055 | 0.26% | 0.17% | 0.17% |
| TEXAS MUN GAS 5% 01/36, due Jan 1, 2036 | 0.22% | 0.17% | 0.17% |
| MAIN STR NAT VAR 04/54, due Apr 1, 2054 | 0.18% | 0.17% | 0.17% |
| TOBACCO 5% 06/46, due Jun 1, 2046 | 0.17% | 0.21% | 0.17% |
| CHANDLER ARIZ VAR 09/52, due Sep 1, 2052 | 0.22% | 0.17% | 0.17% |
| CHICAGO ILL TRAN 5% 12/49, due Dec 1, 2049 | 0.15% | 0.59% | 0.15% |
| ILLINOIS FIN VAR 12/50, due Dec 1, 2050 | 0.14% | 0.16% | 0.14% |
| FEDERAL HOME LN VAR 10/40, due Oct 25, 2040 | 0.14% | 0.17% | 0.14% |
| HOUSTON TEX 5.25% 07/34, due Jul 15, 2034 | 0.13% | 0.17% | 0.13% |
| CALIFORNIA VAR 02/55, due Feb 1, 2055 | 0.21% | 0.13% | 0.13% |
| CALIFORNIA 4.05% 07/41, due Jul 20, 2041 | 0.13% | 0.16% | 0.13% |
| PEFA INC IOWA 5% 04/35, due Apr 1, 2035 | 0.12% | 0.17% | 0.12% |
| VANCOUVER 4.25% 02/38, due Feb 1, 2038 | 0.10% | 0.33% | 0.10% |
| TENNESSEE ENERGY 5% 12/35, due Dec 1, 2035 | 0.10% | 0.17% | 0.10% |
| CALIFORNIA VAR 01/65, due Jan 1, 2065 | 0.13% | 0.09% | 0.09% |
| NEW YORK 5.5% 12/54, due Dec 31, 2054 | 0.09% | 0.08% | 0.08% |
| SOUTHEAST VAR 01/56, due Jan 1, 2056 | 0.25% | 0.08% | 0.08% |
| TENNESSEE ENERGY 5% 11/34, due Nov 1, 2034 | 0.07% | 0.24% | 0.07% |
| PUBLIC FIN 5.75% 12/65, due Dec 31, 2065 | 0.07% | 0.34% | 0.07% |
| MIAMI-DADE CNTY 5% 10/35, due Oct 1, 2035 | 0.06% | 0.18% | 0.06% |
| GRAND PARKWAY 4% 10/45, due Oct 1, 2045 | 0.06% | 0.39% | 0.06% |
| ILLINOIS ST GO 5% 02/39, due Feb 1, 2039 | 0.06% | 0.18% | 0.06% |
| KENTUCKY INC KY 5% 05/36, due May 1, 2036 | 0.06% | 0.61% | 0.06% |
| LOWER COLO RIV 5% 05/40, due May 15, 2040 | 0.06% | 0.18% | 0.06% |
| PUBLIC FIN 5.5% 07/44, due Jul 1, 2044 | 0.05% | 0.17% | 0.05% |
| SOUTHEAST ENERGY 5% 11/35, due Nov 1, 2035 | 0.05% | 0.32% | 0.05% |
| 2026 LN HLDG-1 FLT 10/27, due Oct 1, 2027 | 0.05% | 0.16% | 0.05% |
| GOLDEN ST TOB 5% 06/51, due Jun 1, 2051 | 0.05% | 0.24% | 0.05% |
| MUNICIPAL ELEC 5% 01/63, due Jan 1, 2063 | 0.04% | 0.11% | 0.04% |
| CHICAGO ILL 5% 01/34, due Jan 1, 2034 | 0.04% | 0.18% | 0.04% |
| NEW JERSEY ST 5.25% 06/50, due Jun 15, 2050 | 0.04% | 0.33% | 0.04% |
| LEE CNTY FLA VAR 10/56, due Oct 1, 2056 | 0.04% | 0.28% | 0.04% |
| KENTUCKY INC KY VAR 04/54, due Apr 1, 2054 | 0.04% | 0.04% | 0.04% |
| DIRECTOR ST NEV VAR 01/65, due Jan 1, 2065 | 0.09% | 0.03% | 0.03% |
| LOS ANGELES 5% 06/55, due Jun 1, 2055 | 0.03% | 0.17% | 0.03% |
| BLACK BELT VAR 12/52, due Dec 1, 2052 | 0.03% | 0.18% | 0.03% |
| SOUTHEAST ENERGY 5% 09/35, due Sep 1, 2035 | 0.03% | 0.18% | 0.03% |
| METROPOLITAN 5.25% 11/45, due Nov 15, 2045 | 0.03% | 0.33% | 0.03% |
| TEXAS ST UNIV 5% 03/32, due Mar 15, 2032 | 0.03% | 0.18% | 0.03% |
| FAYETTE CNTY 5.25% 10/54, due Oct 1, 2054 | 0.03% | 0.17% | 0.03% |
| TOBACCO ZERO 06/65, due Jun 1, 2065 | 0.08% | 0.03% | 0.03% |
| NATIONAL FIN 5.25% 12/35, due Dec 1, 2035 | 0.02% | 0.16% | 0.02% |
| SALT RIV PROJ 5% 01/46, due Jan 1, 2046 | 0.02% | 0.35% | 0.02% |
| ALABAMA ST HWY 5% 09/44, due Sep 1, 2044 | 0.02% | 0.18% | 0.02% |
| ILLINOIS ST GO 4% 10/33, due Oct 1, 2033 | 0.03% | 0.02% | 0.02% |
| SOUTH CAROLINA 5% 12/43, due Dec 1, 2043 | 0.02% | 0.18% | 0.02% |
| SUFFOLK REGL 5.75% 12/44, due Dec 1, 2044 | 0.03% | 0.02% | 0.02% |
| ILLINOIS ST GO 5.5% 05/47, due May 1, 2047 | 0.02% | 0.17% | 0.02% |
| SOUTHEAST ALA VAR 06/49, due Jun 1, 2049 | 0.02% | 0.03% | 0.02% |
| TEXAS PRIVATE 5% 06/58, due Jun 30, 2058 | 0.15% | 0.02% | 0.02% |
| NEW YORK 5.25% 01/50, due Jan 1, 2050 | 0.02% | 0.02% | 0.02% |
| MASSACHUSETTS ST 5% 04/55, due Apr 1, 2055 | 0.02% | 0.25% | 0.02% |
| NORTH EAST TEX 5% 01/41, due Jan 1, 2041 | 0.02% | 0.17% | 0.02% |
| DETROIT MICH 6% 05/43, due May 1, 2043 | 0.01% | 0.18% | 0.01% |
| MISSOURI ST VAR 10/35, due Oct 1, 2035 | 0.01% | 0.14% | 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.