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
67 holdings in all 2 funds| Fund | JMUB | TAXF | Positions | Holdings |
|---|---|---|---|---|
| JMUBJPMorgan Municipal ETF | — | 5% 67 shared |
2,176 | as of Oct 21, 2026issuer data |
| TAXFAmerican Century Diversified Municipal Bond ETF | 5% 67 shared | — | 754 | 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
4.5% common weight| Holding | JMUB | TAXF | Smallest |
|---|---|---|---|
| PUERTO RICO 4.329% 07/40, due Jul 1, 2040 | 0.54% | 0.60% | 0.54% |
| BLACK BELT VAR 03/55, due Mar 1, 2055 | 0.47% | 0.31% | 0.31% |
| MAIN STR NAT VAR 12/55, due Dec 1, 2055 | 0.41% | 0.24% | 0.24% |
| BUCKEYE OHIO TOB 5% 06/55, due Jun 1, 2055 | 0.55% | 0.24% | 0.24% |
| SOUTHERN UTE 5% 04/35, due Apr 1, 2035 | 0.17% | 0.33% | 0.17% |
| TOBACCO 5% 06/46, due Jun 1, 2046 | 0.17% | 0.20% | 0.17% |
| BLACK BELT 5% 10/33, due Oct 1, 2033 | 0.16% | 0.35% | 0.16% |
| ILLINOIS FIN VAR 12/50, due Dec 1, 2050 | 0.14% | 0.15% | 0.14% |
| TARRANT CNTY VAR 11/64, due Nov 15, 2064 | 0.22% | 0.13% | 0.13% |
| DALLAS FORT VAR 11/50, due Nov 1, 2050 | 0.12% | 0.33% | 0.12% |
| CALIFORNIA VAR 01/65, due Jan 1, 2065 | 0.13% | 0.11% | 0.11% |
| JEFFERSON 5.25% 10/42, due Oct 1, 2042 | 0.10% | 0.17% | 0.10% |
| FORT BEND TEX VAR 08/56, due Aug 1, 2056 | 0.09% | 0.09% | 0.09% |
| MAIN STR NAT VAR 07/53, due Jul 1, 2053 | 0.17% | 0.09% | 0.09% |
| PUERTO RICO ZERO 07/51, due Jul 1, 2051 | 0.10% | 0.08% | 0.08% |
| LONG IS PWR VAR 09/49, due Sep 1, 2049 | 0.38% | 0.08% | 0.08% |
| TOBACCO 5% 06/36, due Jun 1, 2036 | 0.07% | 0.16% | 0.07% |
| SOUTHEAST VAR 01/54, due Jan 1, 2054 | 0.07% | 0.34% | 0.07% |
| 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% | 0.32% | 0.07% |
| WEST VIRGINIA VAR 04/55, due Apr 15, 2055 | 0.08% | 0.06% | 0.06% |
| COLORADO HEALTH VAR 11/60, due Nov 15, 2060 | 0.06% | 0.09% | 0.06% |
| NEW YORK TRANSN 5% 10/40, due Oct 1, 2040 | 0.06% | 0.16% | 0.06% |
| TEXAS MUN GAS VAR 01/55, due Jan 1, 2055 | 0.06% | 0.27% | 0.06% |
| NEW YORK N Y GO 5% 02/43, due Feb 1, 2043 | 0.06% | 0.11% | 0.06% |
| NEW YORK N Y 5% 06/46, due Jun 15, 2046 | 0.06% | 0.41% | 0.06% |
| NEW YORK 5.25% 12/54, due Dec 31, 2054 | 0.06% | 0.19% | 0.06% |
| PUBLIC FIN 5.5% 07/44, due Jul 1, 2044 | 0.05% | 0.24% | 0.05% |
| BLACK BELT 5% 10/35, due Oct 1, 2035 | 0.05% | 0.40% | 0.05% |
| IDAHO HEALTH VAR 03/60, due Mar 1, 2060 | 0.05% | 0.06% | 0.05% |
| ILLINOIS FIN VAR 08/59, due Aug 15, 2059 | 0.05% | 0.13% | 0.05% |
| OHIO ST HOSP VAR 08/54, due Aug 15, 2054 | 0.05% | 0.08% | 0.05% |
| TEXAS TRANSN VAR 08/42, due Aug 15, 2042 | 0.04% | 0.24% | 0.04% |
| COLORADO HEALTH VAR 11/59, due Nov 15, 2059 | 0.06% | 0.04% | 0.04% |
| MAIN STR NAT VAR 05/54, due May 1, 2054 | 0.04% | 0.15% | 0.04% |
| COLUMBUS OHIO 5% 01/38, due Jan 1, 2038 | 0.04% | 0.25% | 0.04% |
| KENTUCKY INC KY VAR 04/54, due Apr 1, 2054 | 0.04% | 0.08% | 0.04% |
| TOBACCO 5% 06/34, due Jun 1, 2034 | 0.06% | 0.04% | 0.04% |
| MICHIGAN ST VAR 08/55, due Aug 15, 2055 | 0.04% | 0.09% | 0.04% |
| PUERTO RICO 5.625% 07/27, due Jul 1, 2027 | 0.04% | 0.20% | 0.04% |
| NEW YORK N Y GO 4% 09/46, due Sep 1, 2046 | 0.05% | 0.04% | 0.04% |
| ILLINOIS HSG VAR 08/28, due Aug 1, 2028 | 0.04% | 0.05% | 0.04% |
| MAIN STR NAT VAR 05/54, due May 1, 2054 | 0.04% | 0.31% | 0.04% |
| NEW YORK N Y 5.25% 06/52, due Jun 15, 2052 | 0.03% | 0.08% | 0.03% |
| BALDWIN CNTY VAR 03/56, due Mar 1, 2056 | 0.03% | 0.15% | 0.03% |
| MAIN STR NAT VAR 05/52, due May 1, 2052 | 0.03% | 0.18% | 0.03% |
| MAIN STR NAT VAR 09/53, due Sep 1, 2053 | 0.03% | 0.09% | 0.03% |
| ALABAMA ST HWY 5% 09/39, due Sep 1, 2039 | 0.03% | 0.17% | 0.03% |
| CHICAGO ILL 5.75% 01/48, due Jan 1, 2048 | 0.03% | 0.05% | 0.03% |
| MONTANA ST BRD VAR 11/46, due Nov 1, 2046 | 0.02% | 0.33% | 0.02% |
| MOBILE CNTY 4.75% 12/54, due Dec 1, 2054 | 0.23% | 0.02% | 0.02% |
| CHICAGO ILL GO 6% 01/50, due Jan 1, 2050 | 0.02% | 0.13% | 0.02% |
| NEW YORK TRANSN 3% 08/31, due Aug 1, 2031 | 0.03% | 0.02% | 0.02% |
| SOUTHEAST ALA VAR 06/49, due Jun 1, 2049 | 0.02% | 0.18% | 0.02% |
| CENTRAL PLAINS VAR 05/53, due May 1, 2053 | 0.02% | 0.16% | 0.02% |
| DETROIT MICH 6% 05/43, due May 1, 2043 | 0.01% | 0.05% | 0.01% |
| KNOX CNTY 5.25% 07/49, due Jul 1, 2049 | 0.01% | 0.04% | 0.01% |
| MASSACHUSETTS ST 5% 02/38, due Feb 15, 2038 | 0.01% | 0.08% | 0.01% |
| BURKE CNTY GA VAR 11/53, due Nov 1, 2053 | 0.01% | 0.03% | 0.01% |
| ILLINOIS FIN VAR 08/52, due Aug 15, 2052 | 0.01% | 0.04% | 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.