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
63 holdings in all 2 funds| Fund | BSMR | IBMR | Positions | Holdings |
|---|---|---|---|---|
| BSMRInvesco BulletShares 2027 Municipal Bond ETF | — | 2% 63 shared |
2,492 | as of May 31, 2026SEC filing |
| IBMRiShares iBonds Dec 2029 Term Muni Bond ETF | 2% 63 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
1.9% common weight| Holding | BSMR | IBMR | Smallest |
|---|---|---|---|
| Illinois (State of) 5%, due Nov 1, 2029 | 0.46% | 0.29% | 0.29% |
| Washington (State of) 5%, due Aug 1, 2029 | 0.08% | 0.17% | 0.08% |
| Illinois (State of) 5%, due Feb 1, 2029 | 0.08% | 0.09% | 0.08% |
| Los Angeles (County of), CA Metropolitan Transportation Authority 5%, due Jul 1, 2029 | 0.07% | 0.36% | 0.07% |
| California (State of) 5%, due Nov 1, 2029 | 0.11% | 0.06% | 0.06% |
| Energy Northwest (Columbia Generating Station) 5%, due Jul 1, 2029 | 0.05% | 0.10% | 0.05% |
| New York (State of) Dormitory Authority 5%, due Feb 15, 2027 | 0.07% | 0.05% | 0.05% |
| Mississippi (State of) 5%, due Oct 1, 2029 | 0.05% | 0.09% | 0.05% |
| California (State of) Public Works Board (Various Capital) 5%, due Oct 1, 2029 | 0.10% | 0.05% | 0.05% |
| Florida (State of) Municipal Power Agency 3%, due Oct 1, 2029 | 0.05% | 0.05% | 0.05% |
| Virginia (Commonwealth of) Transportation Board 5%, due May 15, 2029 | 0.05% | 0.04% | 0.04% |
| Triborough Bridge & Tunnel Authority 5%, due Nov 15, 2029 | 0.04% | 0.10% | 0.04% |
| Fort Bend Independent School District 5%, due Aug 15, 2029 | 0.04% | 0.07% | 0.04% |
| Texas A&M University 5%, due May 15, 2029 | 0.04% | 0.04% | 0.04% |
| California (State of) 5%, due Aug 1, 2029 | 0.03% | 0.06% | 0.03% |
| Allegheny (County of), PA Higher Education Building Authority (Carnegie Mellon University) 5%, due Aug 1, 2029 | 0.03% | 0.09% | 0.03% |
| Richmond (City of), VA 4%, due Jul 15, 2029 | 0.03% | 0.10% | 0.03% |
| New York & New Jersey (States of) Port Authority 5%, due Nov 15, 2029 | 0.03% | 0.07% | 0.03% |
| New York (City of), NY Municipal Water Finance Authority 5%, due Jun 15, 2029 | 0.03% | 0.05% | 0.03% |
| Houston (City of), TX 5%, due Mar 1, 2029 | 0.03% | 0.10% | 0.03% |
| Contra Costa (County of), CA Transportation Authority 5%, due Mar 1, 2029 | 0.03% | 0.27% | 0.03% |
| University of California 5%, due May 15, 2029 | 0.03% | 0.03% | 0.03% |
| New Jersey (State of) Educational Facilities Authority (Princeton University) 5%, due Jul 1, 2029 | 0.04% | 0.03% | 0.03% |
| New York (City of), NY 5%, due Aug 1, 2029 | 0.03% | 0.05% | 0.03% |
| West Virginia (State of) Commissioner of Highways (Surface Transportation) 5%, due Sep 1, 2029 | 0.03% | 0.14% | 0.03% |
| Columbus (City of), OH 5%, due Apr 1, 2029 | 0.03% | 0.03% | 0.03% |
| Orange (County of), CA Sanitation District 5%, due Feb 1, 2029 | 0.03% | 0.09% | 0.03% |
| District of Columbia 5%, due Jun 1, 2029 | 0.05% | 0.02% | 0.02% |
| New York (State of) Dormitory Authority 5%, due Jul 1, 2029 | 0.02% | 0.03% | 0.02% |
| University of Michigan 5%, due Apr 1, 2029 | 0.04% | 0.02% | 0.02% |
| Oklahoma (State of) Turnpike Authority 5%, due Jan 1, 2029 | 0.02% | 0.09% | 0.02% |
| City of Gainesville FL Utilities System Revenue 5%, due Oct 1, 2029 | 0.02% | 0.09% | 0.02% |
| Hudson Yards Infrastructure Corp. 5%, due Feb 15, 2029 | 0.02% | 0.06% | 0.02% |
| San Francisco (City & County of), CA Public Utilities Commission (Green Bonds) 5%, due Nov 1, 2029 | 0.08% | 0.02% | 0.02% |
| New York (City of), NY Transitional Finance Authority 5%, due Nov 1, 2029 | 0.02% | 0.20% | 0.02% |
| University of Connecticut 5%, due Jan 15, 2029 | 0.09% | 0.02% | 0.02% |
| Texas (State of) 5%, due Oct 1, 2029 | 0.05% | 0.02% | 0.02% |
| Hawaii (State of) 5%, due May 1, 2029 | 0.02% | 0.10% | 0.02% |
| Virginia (Commonwealth of) Public Building Authority 5%, due Aug 1, 2029 | 0.03% | 0.02% | 0.02% |
| City of Austin TX Water & Wastewater System Revenue 5%, due Nov 15, 2029 | 0.02% | 0.09% | 0.02% |
| Seattle (City of), WA 5%, due Sep 1, 2029 | 0.02% | 0.13% | 0.02% |
| Utah (State of) 5%, due Jul 1, 2029 | 0.02% | 0.03% | 0.02% |
| New York City Transitional Finance Authority Future Tax Secured Revenue 5%, due Aug 1, 2029 | 0.02% | 0.09% | 0.02% |
| New York State Dormitory Authority 5%, due Oct 1, 2029 | 0.02% | 0.02% | 0.02% |
| New York (City of), NY Transitional Finance Authority 5%, due Nov 1, 2029 | 0.03% | 0.02% | 0.02% |
| City of Los Angeles CA Wastewater System Revenue 5%, due Jun 1, 2029 | 0.02% | 0.02% | 0.02% |
| Maryland (State of) 5%, due Mar 15, 2029 | 0.07% | 0.02% | 0.02% |
| Miami-Dade (County of), FL 5%, due Oct 1, 2029 | 0.01% | 0.08% | 0.01% |
| North Carolina (State of) 5%, due May 1, 2029 | 0.16% | 0.01% | 0.01% |
| Salt River Project Agricultural Improvement & Power District 5%, due Jan 1, 2029 | 0.03% | 0.01% | 0.01% |
| Hawaii (State of) 5%, due Oct 1, 2029 | 0.01% | 0.08% | 0.01% |
| Clark (County of), NV 5%, due Jun 1, 2029 | 0.01% | 0.03% | 0.01% |
| Columbus (City of), OH 4%, due Apr 1, 2029 | 0.01% | 0.01% | 0.01% |
| Minneapolis & St. Paul (Cities of), MN Metropolitan Airports Commission 5%, due Jan 1, 2029 | 0.01% | 0.14% | 0.01% |
| Texas State University Board of Regents 5%, due Mar 15, 2029 | 0.03% | 0.01% | 0.01% |
| Westchester (County of), NY 4%, due Jul 1, 2029 | 0.01% | 0.01% | 0.01% |
| State of Minnesota 3%, due Oct 1, 2029 | 0.01% | 0.09% | 0.01% |
| New York (City of), NY Transitional Finance Authority 5%, due Jul 15, 2029 | 0.01% | 0.05% | 0.01% |
| California (State of) Infrastructure & Economic Development Bank (Clean Water Revolving Fund) (Green Bonds) 5%, due Oct 1, 2029 | 0.04% | 0.01% | 0.01% |
| Ohio Water Development Authority Water Pollution Control Loan Fund 5%, due Jun 1, 2029 | 0.00% | 0.01% | 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.