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
24 holdings in all 2 funds| Fund | IBMP | IBMR | Positions | Holdings |
|---|---|---|---|---|
| IBMPiShares iBonds Dec 2027 Term Muni Bond ETF | — | 1% 24 shared |
1,867 | as of Oct 20, 2026issuer data |
| IBMRiShares iBonds Dec 2029 Term Muni Bond ETF | 1% 24 shared | — | 2,005 | 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
0.8% common weight| Holding | IBMP | IBMR | Smallest |
|---|---|---|---|
| WASHINGTON ST FOR ISSUES DTD P 5%, due Aug 1, 2029 | 0.07% | 0.17% | 0.07% |
| NEW YORK N Y CITY TRANSITIONAL 5%, due Aug 1, 2029 | 0.06% | 0.09% | 0.06% |
| NEW YORK N Y CITY TRANSITIONAL 5%, due Nov 1, 2029 | 0.06% | 0.20% | 0.06% |
| NEW YORK ST DORM AUTH ST PERS 5%, due Feb 15, 2027 | 0.09% | 0.05% | 0.05% |
| ENERGY NORTHWEST WASH ELEC REV 5%, due Jul 1, 2029 | 0.05% | 0.10% | 0.05% |
| WEST VA COMMR OF HWYS SPL OBLI 5%, due Sep 1, 2029 | 0.04% | 0.14% | 0.04% |
| NEW YORK N Y 5%, due Aug 1, 2029 | 0.04% | 0.05% | 0.04% |
| CALIFORNIA ST PUB WKS BRD LEAS 5%, due Sep 1, 2029 | 0.04% | 0.06% | 0.04% |
| VIRGINIA COMWLTH TRANSN BRD TR 5%, due May 15, 2029 | 0.05% | 0.04% | 0.04% |
| HUDSON YDS INFRASTRUCTURE CORP 5%, due Feb 15, 2029 | 0.04% | 0.06% | 0.04% |
| PORT AUTH N Y & N J 5%, due Nov 15, 2029 | 0.04% | 0.07% | 0.04% |
| NEW JERSEY ST TPK AUTH TPK REV 5%, due Jan 1, 2029 | 0.03% | 0.03% | 0.03% |
| UTAH ST 5%, due Jul 1, 2029 | 0.03% | 0.03% | 0.03% |
| FRISCO TEX INDPT SCH DIST 4%, due Aug 15, 2029 | 0.03% | 0.06% | 0.03% |
| TEXAS WATER DEV BRD 5%, due Aug 1, 2029 | 0.10% | 0.02% | 0.02% |
| DU PAGE COOK & WILL CNTYS ILL 3%, due Jan 1, 2029 | 0.09% | 0.02% | 0.02% |
| KANSAS ST DEPT TRANSN HWY REV 5%, due Sep 1, 2029 | 0.02% | 0.05% | 0.02% |
| UNIVERSITY CALIF REVS FOR PREV 5%, due May 15, 2029 | 0.02% | 0.03% | 0.02% |
| INDIANAPOLIS IND LOC PUB IMPT 5%, due Jan 15, 2029 | 0.06% | 0.02% | 0.02% |
| TEXAS A & M UNIV REV 5%, due May 15, 2029 | 0.02% | 0.04% | 0.02% |
| SAN DIEGO CALIF UNI SCH DIST 5%, due Jul 1, 2029 | 0.01% | 0.01% | 0.01% |
| SALT RIV PROJ AGRIC IMPT & PWR 5%, due Jan 1, 2029 | 0.06% | 0.01% | 0.01% |
| REGIONAL TRANSN AUTH ILL 5%, due Jul 1, 2029 | 0.03% | 0.01% | 0.01% |
| NEW YORK ST ENVIRONMENTAL FACS 5%, due Jun 15, 2029 | 0.14% | 0.00% | 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.