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
50 holdings in all 2 funds| Fund | IBMR | IBMT | Positions | Holdings |
|---|---|---|---|---|
| IBMRiShares iBonds Dec 2029 Term Muni Bond ETF | — | 2% 50 shared |
2,005 | as of Oct 20, 2026issuer data |
| IBMTiShares iBonds Dec 2031 Term Muni Bond ETF | 2% 50 shared | — | 1,656 | as of Oct 20, 2026issuer data |
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
1.7% common weight| Holding | IBMR | IBMT | Smallest |
|---|---|---|---|
| NORTH CAROLINA ST GRANT ANTIC 5%, due Mar 1, 2031 | 0.17% | 0.13% | 0.13% |
| DISTRICT COLUMBIA 5%, due Oct 15, 2031 | 0.08% | 0.13% | 0.08% |
| MARYLAND ST 5%, due Aug 1, 2031 | 0.08% | 0.13% | 0.08% |
| COLORADO ST BLDG EXCELLENT SCH 5%, due Mar 15, 2031 | 0.08% | 0.07% | 0.07% |
| DISTRICT COLUMBIA REV 5%, due Dec 1, 2031 | 0.09% | 0.07% | 0.07% |
| OMAHA PUB PWR DIST NEB ELEC RE 5%, due Feb 1, 2031 | 0.06% | 0.10% | 0.06% |
| NEW YORK ST DORM AUTH ST PERS 5%, due Mar 15, 2031 | 0.06% | 0.07% | 0.06% |
| ILLINOIS ST TOLL HWY AUTH TOLL 5%, due Jan 1, 2031 | 0.15% | 0.06% | 0.06% |
| UNIVERSITY ALA GEN REV 5%, due Jul 1, 2031 | 0.10% | 0.06% | 0.06% |
| WEST VIRGINIA ST 5%, due Dec 1, 2031 | 0.13% | 0.06% | 0.06% |
| MASSACHUSETTS ST 5%, due Jan 1, 2031 | 0.12% | 0.05% | 0.05% |
| CLARK CNTY NEV 5%, due Jun 1, 2031 | 0.05% | 0.05% | 0.05% |
| UNIVERSITY OF ALA AT BIRMINGHA 5%, due Oct 1, 2031 | 0.05% | 0.05% | 0.05% |
| WASHOE CNTY NEV HWY REV 5%, due Feb 1, 2031 | 0.04% | 0.10% | 0.04% |
| VIRGINIA COLLEGE BLDG AUTH VA 5%, due Feb 1, 2031 | 0.04% | 0.04% | 0.04% |
| NORTH CAROLINA ST LTD OBLIG 5%, due May 1, 2031 | 0.05% | 0.04% | 0.04% |
| PRINCE GEORGES CNTY MD 4%, due Jul 15, 2031 | 0.09% | 0.04% | 0.04% |
| MILWAUKEE WIS MET SEW DIST 4%, due Oct 1, 2031 | 0.05% | 0.04% | 0.04% |
| WASHINGTON ST 5%, due Aug 1, 2031 | 0.15% | 0.03% | 0.03% |
| CHIPPEWA VALLEY MICH SCHS 5%, due May 1, 2031 | 0.08% | 0.03% | 0.03% |
| KING CNTY WASH SCH DIST NO 210, due Dec 1, 2031 | 0.06% | 0.03% | 0.03% |
| PENNSYLVANIA ST TPK COMMN TPK 5%, due Dec 1, 2031 | 0.05% | 0.03% | 0.03% |
| DALLAS TEX AREA RAPID TRAN SAL 5%, due Dec 1, 2031 | 0.06% | 0.03% | 0.03% |
| WAKE CNTY N C LTD OBLIG 5%, due Sep 1, 2031 | 0.03% | 0.08% | 0.03% |
| SPOKANE CNTY WASH 5%, due Dec 1, 2031 | 0.05% | 0.03% | 0.03% |
| INDIANA MUN PWR AGY PWR SUPPLY 5%, due Jan 1, 2031 | 0.03% | 0.15% | 0.03% |
| PORTLAND ORE SWR SYS REV 5%, due Mar 1, 2031 | 0.03% | 0.09% | 0.03% |
| UTAH COUNTY UTAH TRANSN SALES 5%, due Dec 1, 2031 | 0.03% | 0.03% | 0.03% |
| ANAHEIM CALIF PUB FING AUTH LE 5%, due Sep 1, 2031 | 0.02% | 0.08% | 0.02% |
| CLARK CNTY WASH SCH DIST NO 03, due Dec 1, 2031 | 0.02% | 0.05% | 0.02% |
| UNIVERSITY UTAH UNIV REVS 5%, due Aug 1, 2031 | 0.02% | 0.09% | 0.02% |
| UNIVERSITY ARK UNIV REV 5%, due Mar 1, 2031 | 0.02% | 0.06% | 0.02% |
| KANSAS ST DEV FIN AUTH REV 4%, due Jun 1, 2031 | 0.02% | 0.05% | 0.02% |
| RHODE ISLAND ST & PROVIDENCE P 5%, due Jan 15, 2031 | 0.04% | 0.02% | 0.02% |
| SHELBY CNTY TENN 5%, due Apr 1, 2031 | 0.02% | 0.02% | 0.02% |
| BALTIMORE MD 5%, due Oct 15, 2031 | 0.01% | 0.03% | 0.01% |
| CALIFORNIA ST 5%, due Oct 1, 2031 | 0.06% | 0.01% | 0.01% |
| HONOLULU HAWAII CITY & CNTY WA 4%, due Jul 1, 2031 | 0.10% | 0.01% | 0.01% |
| DELAWARE RIV JT TOLL BRDG COMM 5%, due Jul 1, 2031 | 0.03% | 0.01% | 0.01% |
| LOUDOUN CNTY VA 5%, due Dec 1, 2031 | 0.01% | 0.04% | 0.01% |
| MARYLAND ST 5%, due Mar 15, 2031 | 0.05% | 0.01% | 0.01% |
| CONNECTICUT ST 5%, due Apr 15, 2031 | 0.05% | 0.01% | 0.01% |
| CENTRAL FLA EXPWY AUTH SR LIEN 5%, due Jul 1, 2031 | 0.01% | 0.02% | 0.01% |
| MIAMI-DADE CNTY FLA TRAN SYS S 5%, due Jul 1, 2031 | 0.13% | 0.01% | 0.01% |
| INDIANA ST FIN AUTH REV 5%, due Feb 1, 2031 | 0.07% | 0.01% | 0.01% |
| ILLINOIS ST 5%, due Nov 1, 2031 | 0.13% | 0.01% | 0.01% |
| CHARLOTTE N C 5%, due Jun 1, 2031 | 0.16% | 0.01% | 0.01% |
| VIRGINIA COMWLTH TRANSN BRD TR 5%, due May 15, 2031 | 0.01% | 0.08% | 0.01% |
| MAINE GOVERNMENTAL FACS AUTH L 5%, due Oct 1, 2031 | 0.03% | 0.01% | 0.01% |
| OHIO ST 5%, due Jun 15, 2031 | 0.09% | 0.01% | 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.