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
46 holdings in all 2 funds| Fund | JMST | TAFI | Positions | Holdings |
|---|---|---|---|---|
| JMSTJPMorgan Ultra-Short Municipal Income ETF | — | 2% 46 shared |
1,965 86% of fund | as of Nov 6, 2026issuer data |
| TAFIAB Tax-Aware Short Duration Municipal ETF | 2% 46 shared | — | 692 | as of Aug 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
2.4% common weight| Holding | JMST | TAFI | Smallest |
|---|---|---|---|
| TEXAS MUN GAS VAR 01/54, due Jan 1, 2054 | 0.27% | 0.30% | 0.27% |
| CHANDLER ARIZ VAR 09/52, due Sep 1, 2052 | 0.23% | 0.37% | 0.23% |
| 2026 LN HLDG-1 FLT 10/27, due Oct 1, 2027 | 0.34% | 0.17% | 0.17% |
| TARRANT CNTY VAR 11/64, due Nov 15, 2064 | 0.51% | 0.15% | 0.15% |
| JERSEY CITY N J 5% 12/26, due Dec 9, 2026 | 0.15% | 0.15% | 0.15% |
| LOS ANGELES 5% 06/27, due Jun 24, 2027 | 0.15% | 0.52% | 0.15% |
| HARRIS CNTY TEX VAR 07/54, due Jul 1, 2054 | 0.12% | 0.28% | 0.12% |
| OKLAHOMA CITY 5% 06/29, due Jun 1, 2029 | 0.11% | 0.15% | 0.11% |
| CUMBERLAND CNTY VAR 12/27, due Dec 1, 2027 | 0.10% | 0.80% | 0.10% |
| UTAH ST BRD 5.5% 04/29, due Apr 1, 2029 | 0.10% | 0.08% | 0.08% |
| TARRANT REGL WTR 5% 03/27, due Mar 1, 2027 | 0.08% | 0.11% | 0.08% |
| DALLAS FORT 5% 11/31, due Nov 1, 2031 | 0.08% | 0.39% | 0.08% |
| WASHINGTON ST 5% 08/30, due Aug 1, 2030 | 0.08% | 0.07% | 0.07% |
| FLORIDA LOC 4.2% 11/30, due Nov 15, 2030 | 0.07% | 0.07% | 0.07% |
| JEFFERSON CNTY VAR 12/53, due Dec 1, 2053 | 0.06% | 0.29% | 0.06% |
| PORT SEATTLE 5% 05/30, due May 1, 2030 | 0.05% | 0.16% | 0.05% |
| COLORADO ST CTFS 5% 12/27, due Dec 15, 2027 | 0.05% | 0.07% | 0.05% |
| INDIANA FIN VAR 10/64, due Oct 1, 2064 | 0.04% | 0.08% | 0.04% |
| BURKE CNTY GA VAR 12/49, due Dec 1, 2049 | 0.04% | 0.11% | 0.04% |
| AQUARION WTR 5.25% 02/29, due Feb 1, 2029 | 0.04% | 0.05% | 0.04% |
| KENTUCKY ST TPK 5% 07/27, due Jul 1, 2027 | 0.03% | 0.07% | 0.03% |
| COOK CNTY ILL 5% 11/30, due Nov 15, 2030 | 0.03% | 0.23% | 0.03% |
| METROPOLITAN 5% 11/31, due Nov 15, 2031 | 0.02% | 0.11% | 0.02% |
| PHILADELPHIA PA 5% 06/27, due Jun 30, 2027 | 0.02% | 0.37% | 0.02% |
| ILLINOIS ST GO 5% 11/27, due Nov 1, 2027 | 0.02% | 0.19% | 0.02% |
| LOUISA VA INDL VAR 11/35, due Nov 1, 2035 | 0.02% | 0.14% | 0.02% |
| FORT WORTH TEX 5% 03/27, due Mar 1, 2027 | 0.02% | 0.15% | 0.02% |
| LEE CNTY FLA VAR 10/56, due Oct 1, 2056 | 0.02% | 0.13% | 0.02% |
| ESSEX CNTY N J 4% 03/27, due Mar 12, 2027 | 0.02% | 0.18% | 0.02% |
| ILLINOIS ST GO 5% 05/28, due May 1, 2028 | 0.01% | 0.09% | 0.01% |
| NEW JERSEY ST 5% 06/28, due Jun 15, 2028 | 0.01% | 0.15% | 0.01% |
| SOUTH MIAMI FLA VAR 08/65, due Aug 15, 2065 | 0.01% | 0.10% | 0.01% |
| ST JOHN BAPTIST VAR 06/37, due Jun 1, 2037 | 0.01% | 0.15% | 0.01% |
| GUAM GOVT 5% 01/28, due Jan 1, 2028 | 0.01% | 0.12% | 0.01% |
| METROPOLITAN VAR 10/28, due Oct 1, 2028 | 0.00% | 0.15% | 0.00% |
| MIAMI DADE CNTY 5% 07/28, due Jul 1, 2028 | 0.00% | 0.12% | 0.00% |
| NEW YORK N Y 5% 11/27, due Nov 1, 2027 | 0.00% | 0.03% | 0.00% |
| OLATHE KANS GEN 5% 10/27, due Oct 1, 2027 | 0.00% | 0.34% | 0.00% |
| MERCER CNTY N J 4% 03/27, due Mar 29, 2027 | 0.00% | 0.43% | 0.00% |
| NEW JERSEY ST 5% 06/27, due Jun 15, 2027 | 0.00% | 0.27% | 0.00% |
| MONMOUTH CNTY N 4% 03/27, due Mar 12, 2027 | 0.00% | 0.26% | 0.00% |
| NEW JERSEY ST 5% 12/27, due Dec 15, 2027 | 0.00% | 0.08% | 0.00% |
| SOUTH CAROLINA 5% 12/27, due Dec 1, 2027 | 0.00% | 0.08% | 0.00% |
| REVERE MASS GEN 4% 07/27, due Jul 29, 2027 | 0.00% | 0.74% | 0.00% |
| PENNSYLVANIA ST 5% 04/27, due Apr 1, 2027 | 0.00% | 0.37% | 0.00% |
| ILLINOIS ST 4% 06/28, due Jun 15, 2028 | 0.00% | 0.04% | 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.