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
57 holdings in all 2 funds| Fund | IBMQ | IBMS | Positions | Holdings |
|---|---|---|---|---|
| IBMQiShares iBonds Dec 2028 Term Muni Bond ETF | — | 2% 57 shared |
2,952 | as of Oct 20, 2026issuer data |
| IBMSiShares iBonds Dec 2030 Term Muni Bond ETF | 2% 57 shared | — | 1,970 | 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
1.6% common weight| Holding | IBMQ | IBMS | Smallest |
|---|---|---|---|
| HILLSBOROUGH CNTY FLA SCH BRD 5%, due Jul 1, 2030 | 0.15% | 0.21% | 0.15% |
| NEW YORK ST DORM AUTH SALES TA 5%, due Mar 15, 2030 | 0.12% | 0.11% | 0.11% |
| NEW YORK N Y CITY TRANSITIONAL 5%, due Jul 15, 2030 | 0.10% | 0.22% | 0.10% |
| CALIFORNIA ST 5%, due Aug 1, 2030 | 0.09% | 0.19% | 0.09% |
| INDIANAPOLIS IND WTR SYS REV 5%, due Oct 1, 2030 | 0.10% | 0.08% | 0.08% |
| INDIANA MUN PWR AGY PWR SUPPLY 5%, due Jan 1, 2030 | 0.07% | 0.07% | 0.07% |
| HARRIS CNTY TEX MET TRAN AUTH 5%, due Nov 1, 2030 | 0.07% | 0.20% | 0.07% |
| TEXAS WATER DEV BRD 5%, due Apr 15, 2030 | 0.07% | 0.10% | 0.07% |
| UNIVERSITY NEB FACS CORP REV 5%, due Jul 15, 2030 | 0.12% | 0.05% | 0.05% |
| LOS ANGELES CALIF UNI SCH DIST 5%, due Jul 1, 2030 | 0.06% | 0.05% | 0.05% |
| WASHINGTON ST 5%, due Feb 1, 2030 | 0.09% | 0.05% | 0.05% |
| GRAND PARKWAY TRANSN CORP TEX 5%, due Oct 1, 2030 | 0.06% | 0.04% | 0.04% |
| PRINCE GEORGES CNTY MD 5%, due Jul 15, 2030 | 0.04% | 0.05% | 0.04% |
| CONNECTICUT ST SPL TAX OBLIG R 5%, due Oct 1, 2030 | 0.04% | 0.12% | 0.04% |
| WASHINGTON ST CTFS PARTN 5%, due Jul 1, 2030 | 0.04% | 0.04% | 0.04% |
| OHIO ST TPK COMMN TPK REV 5%, due Feb 15, 2030 | 0.07% | 0.03% | 0.03% |
| ILLINOIS ST 5%, due Oct 1, 2030 | 0.03% | 0.08% | 0.03% |
| IOWA FIN AUTH REV 5%, due Aug 1, 2030 | 0.03% | 0.08% | 0.03% |
| SALT RIV PROJ AGRIC IMPT & PWR 5%, due Jan 1, 2030 | 0.03% | 0.12% | 0.03% |
| SAN JUAN CALIF UNI SCH DIST 4%, due Aug 1, 2030 | 0.03% | 0.13% | 0.03% |
| NEW YORK N Y 5%, due Aug 1, 2030 | 0.04% | 0.02% | 0.02% |
| METROPOLITAN TRANSN AUTH N Y R 5%, due Nov 15, 2030 | 0.02% | 0.03% | 0.02% |
| HAMPTON RDS VA TRANSN ACCOUNTA 5%, due Jul 1, 2030 | 0.04% | 0.02% | 0.02% |
| BIRMINGHAM ALA WTRWKS BRD WTR 5%, due Jan 1, 2030 | 0.02% | 0.06% | 0.02% |
| NEW YORK N Y CITY TRANSITIONAL 5%, due Jul 15, 2030 | 0.03% | 0.02% | 0.02% |
| MIAMI-DADE CNTY FLA WTR & SWR 5%, due Oct 1, 2030 | 0.02% | 0.06% | 0.02% |
| BROWARD CNTY FLA SCH DIST 5%, due Jul 1, 2030 | 0.02% | 0.02% | 0.02% |
| UNIVERSITY CALIF REVS 5%, due May 15, 2030 | 0.02% | 0.04% | 0.02% |
| LOS ANGELES CALIF DEPT WTR & P 5%, due Jul 1, 2030 | 0.01% | 0.03% | 0.01% |
| KANSAS ST DEV FIN AUTH REV 4%, due Jun 1, 2030 | 0.09% | 0.01% | 0.01% |
| HOUSTON TEX UTIL SYS REV 5%, due Nov 15, 2030 | 0.02% | 0.01% | 0.01% |
| PORT AUTH N Y & N J 5%, due Jul 15, 2030 | 0.04% | 0.01% | 0.01% |
| HONOLULU HAWAII CITY & CNTY 5%, due Sep 1, 2030 | 0.02% | 0.01% | 0.01% |
| TENNESSEE ST 5%, due Feb 1, 2030 | 0.02% | 0.01% | 0.01% |
| VIRGINIA ST 5%, due Jun 1, 2030 | 0.04% | 0.01% | 0.01% |
| NEBRASKA PUB PWR DIST REV 5%, due Jan 1, 2030 | 0.01% | 0.06% | 0.01% |
| NEVADA ST HWY IMPT REV 5%, due Dec 1, 2030 | 0.05% | 0.01% | 0.01% |
| MINNESOTA ST 5%, due Aug 1, 2030 | 0.02% | 0.01% | 0.01% |
| HAMILTON CNTY TENN 5%, due Apr 1, 2030 | 0.01% | 0.03% | 0.01% |
| CLEVELAND OHIO INCOME TAX REV 5%, due Oct 1, 2030 | 0.01% | 0.03% | 0.01% |
| CONNECTICUT ST SPL TAX OBLIG R 5%, due Jan 1, 2030 | 0.01% | 0.02% | 0.01% |
| CHARLOTTE N C WTR & SWR SYS RE 3%, due Jul 1, 2030 | 0.29% | 0.01% | 0.01% |
| CLEVELAND OHIO INCOME TAX REV 5%, due Oct 1, 2030 | 0.01% | 0.04% | 0.01% |
| SEATTLE WASH MUN LT & PWR REV 4%, due Jan 1, 2030 | 0.01% | 0.02% | 0.01% |
| WILLIAMSON CNTY TENN 5%, due Apr 1, 2030 | 0.01% | 0.01% | 0.01% |
| COLORADO ST BRD GOVERNORS UNIV 5%, due Mar 1, 2030 | 0.01% | 0.02% | 0.01% |
| WAYNE CNTY MICH ARPT AUTH REV 5%, due Dec 1, 2030 | 0.01% | 0.01% | 0.01% |
| VIRGINIA BEACH VA 5%, due Apr 1, 2030 | 0.03% | 0.01% | 0.01% |
| LOS ANGELES CALIF DEPT WTR & P 5%, due Jul 1, 2030 | 0.01% | 0.01% | 0.01% |
| SOUTH CAROLINA TRANSN INFRASTR 5%, due Oct 1, 2030 | 0.00% | 0.07% | 0.00% |
| ILLINOIS ST TOLL HWY AUTH TOLL 5%, due Jan 1, 2030 | 0.00% | 0.16% | 0.00% |
| SOUTH DAKOTA CONSERVANCY DIST 5%, due Aug 1, 2030 | 0.00% | 0.01% | 0.00% |
| SALT LAKE CITY UTAH ARPT REV 5%, due Jul 1, 2030 | 0.00% | 0.01% | 0.00% |
| DES MOINES IOWA 4%, due Jun 1, 2030 | 0.00% | 0.03% | 0.00% |
| MARYLAND ST 5%, due Mar 15, 2030 | 0.00% | 0.07% | 0.00% |
| WISCONSIN ST 5%, due May 1, 2030 | 0.00% | 0.02% | 0.00% |
| SAN ANTONIO TEX 5%, due Aug 1, 2030 | 0.00% | 0.02% | 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.