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
34 holdings in all 2 funds| Fund | BSMT | IBMQ | Positions | Holdings |
|---|---|---|---|---|
| BSMTInvesco BulletShares 2029 Municipal Bond ETF | — | 1% 34 shared |
1,797 | as of May 31, 2026SEC filing |
| IBMQiShares iBonds Dec 2028 Term Muni Bond ETF | 1% 34 shared | — | 2,952 | 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
1.2% common weight| Holding | BSMT | IBMQ | Smallest |
|---|---|---|---|
| California (State of) Infrastructure & Economic Development Bank (California Academy of Sciences) (Green Bonds) 3.25%, due Aug 1, 2029 | 0.32% | 0.49% | 0.32% |
| California (State of) 5%, due Aug 1, 2029 | 0.06% | 0.10% | 0.06% |
| Maryland (State of) 5%, due Mar 15, 2029 | 0.05% | 0.07% | 0.05% |
| Maryland (State of) 5%, due Aug 1, 2029 | 0.07% | 0.05% | 0.05% |
| Missouri (State of) Health & Educational Facilities Authority (Mercy Health) 5%, due Jun 1, 2029 | 0.05% | 0.09% | 0.05% |
| Palm Beach County School District 5%, due Aug 1, 2029 | 0.13% | 0.04% | 0.04% |
| New Jersey (State of) Turnpike Authority 5%, due Jan 1, 2029 | 0.04% | 0.12% | 0.04% |
| Connecticut (State of) (Transportation Infrastructure) 5%, due Jan 1, 2029 | 0.04% | 0.06% | 0.04% |
| Louisiana (State of) (Garvee) 5%, due Sep 1, 2029 | 0.04% | 0.10% | 0.04% |
| Honolulu (City & County of), HI (Honolulu Rail Transit) 5%, due Sep 1, 2029 | 0.04% | 0.05% | 0.04% |
| Salt River Project Agricultural Improvement & Power District 5%, due Jan 1, 2029 | 0.04% | 0.09% | 0.04% |
| Illinois (State of) 5%, due May 1, 2029 | 0.03% | 0.05% | 0.03% |
| New Mexico (State of) Finance Authority 5%, due Jun 15, 2029 | 0.07% | 0.03% | 0.03% |
| Georgia (State of) 5%, due Jul 1, 2029 | 0.05% | 0.03% | 0.03% |
| Minnesota (State of) 5%, due Aug 1, 2029 | 0.03% | 0.10% | 0.03% |
| Washington (State of) 5%, due Feb 1, 2029 | 0.03% | 0.02% | 0.02% |
| Long Island (City of), NY Power Authority 5%, due Sep 1, 2029 | 0.02% | 0.03% | 0.02% |
| Indiana Finance Authority 5%, due Feb 1, 2029 | 0.02% | 0.06% | 0.02% |
| Omaha (City of), NE Public Power District 5%, due Feb 1, 2029 | 0.02% | 0.08% | 0.02% |
| Montgomery (County of), MD 5%, due Nov 1, 2029 | 0.04% | 0.02% | 0.02% |
| California (State of) Department of Water Resources (Central Valley) 5%, due Dec 1, 2029 | 0.03% | 0.02% | 0.02% |
| Columbus (City of), OH 5%, due Apr 1, 2029 | 0.02% | 0.04% | 0.02% |
| Virginia (Commonwealth of) College Building Authority (21st Century College and Equipment Programs), due Feb 1, 2029 | 0.02% | 0.10% | 0.02% |
| New York (City of), NY Transitional Finance Authority 5%, due Jul 15, 2029 | 0.09% | 0.01% | 0.01% |
| Ohio (State of) Turnpike & Infrastructure Commission (Infrastructure) 5%, due Feb 15, 2029 | 0.10% | 0.01% | 0.01% |
| Houston (City of), TX 5%, due Jul 1, 2029 | 0.03% | 0.01% | 0.01% |
| New York (City of), NY Transitional Finance Authority 5%, due Jul 15, 2029 | 0.03% | 0.01% | 0.01% |
| New York City Transitional Finance Authority Building Aid Revenue 5%, due Jul 15, 2029 | 0.01% | 0.01% | 0.01% |
| New Jersey (State of) Turnpike Authority 5%, due Jan 1, 2029 | 0.01% | 0.01% | 0.01% |
| University of Colorado 5%, due Jun 1, 2029 | 0.03% | 0.01% | 0.01% |
| University of California (Limited) 4%, due May 15, 2029 | 0.05% | 0.01% | 0.01% |
| Commonwealth of Massachusetts 5%, due Sep 1, 2029 | 0.00% | 0.01% | 0.00% |
| Texas Water Development Board 5%, due Apr 15, 2029 | 0.00% | 0.01% | 0.00% |
| Howard (County of), MD 5%, due Feb 15, 2029 | 0.03% | 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.