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
32 holdings in all 2 funds| Fund | BSMS | IBMP | Positions | Holdings |
|---|---|---|---|---|
| BSMSInvesco BulletShares 2028 Municipal Bond ETF | — | 2% 32 shared |
2,104 | as of May 31, 2026SEC filing |
| IBMPiShares iBonds Dec 2027 Term Muni Bond ETF | 2% 32 shared | — | 1,867 | 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
1.5% common weight| Holding | BSMS | IBMP | Smallest |
|---|---|---|---|
| Illinois (State of) 5%, due Nov 1, 2028 | 0.38% | 0.15% | 0.15% |
| Pennsylvania (Commonwealth of) 5%, due Jan 1, 2028 | 0.13% | 0.14% | 0.13% |
| Pennsylvania (Commonwealth of) 5%, due Jan 15, 2028 | 0.10% | 0.12% | 0.10% |
| Mississippi (State of) 5%, due Oct 1, 2028 | 0.13% | 0.10% | 0.10% |
| California (State of) 5%, due Nov 1, 2028 | 0.11% | 0.09% | 0.09% |
| Energy Northwest (No. 3), due Jul 1, 2028 | 0.11% | 0.08% | 0.08% |
| New York (City of), NY 5%, due Aug 1, 2028 | 0.13% | 0.07% | 0.07% |
| Trinity River Authority 5%, due Aug 1, 2028 | 0.07% | 0.09% | 0.07% |
| California (State of) 5%, due Aug 1, 2028 | 0.07% | 0.07% | 0.07% |
| North Carolina (State of) 5%, due May 1, 2028 | 0.06% | 0.12% | 0.06% |
| Energy Northwest (No. 1), due Jul 1, 2028 | 0.08% | 0.06% | 0.06% |
| Hillsborough (County of), FL School Board (Master Lease Program) 5%, due Jul 1, 2028 | 0.05% | 0.06% | 0.05% |
| Maryland (State of) Department of Transportation 5%, due Sep 1, 2028 | 0.05% | 0.05% | 0.05% |
| New York (City of), NY Transitional Finance Authority 5%, due Jul 15, 2028 | 0.04% | 0.05% | 0.04% |
| Columbus (City of), OH 5%, due Apr 1, 2028 | 0.04% | 0.05% | 0.04% |
| Denver City & County School District No. 1, due Dec 1, 2028 | 0.04% | 0.06% | 0.04% |
| University of California 5%, due May 15, 2028 | 0.04% | 0.04% | 0.04% |
| Minnesota (State of) 5%, due Oct 1, 2028 | 0.03% | 0.07% | 0.03% |
| Maryland (State of) Department of Transportation 5%, due Oct 1, 2028 | 0.04% | 0.03% | 0.03% |
| State of Utah 5%, due Jul 1, 2028 | 0.03% | 0.05% | 0.03% |
| Georgia (State of) 5%, due Feb 1, 2028 | 0.03% | 0.05% | 0.03% |
| Metropolitan St. Louis Sewer District 5%, due May 1, 2028 | 0.02% | 0.06% | 0.02% |
| Riverside (County of), CA Transportation Commission 5%, due Jun 1, 2028 | 0.05% | 0.02% | 0.02% |
| Illinois (State of) Regional Transportation Authority 5%, due Jul 1, 2028 | 0.02% | 0.02% | 0.02% |
| Maryland (State of) 5%, due Aug 1, 2028 | 0.06% | 0.02% | 0.02% |
| Atlanta (City of), GA 5%, due Nov 1, 2028 | 0.02% | 0.04% | 0.02% |
| Tennessee State School Bond Authority 5%, due Nov 1, 2028 | 0.01% | 0.07% | 0.01% |
| Hawaii (State of) 5%, due May 1, 2028 | 0.01% | 0.05% | 0.01% |
| Texas Water Development Board 5%, due Apr 15, 2028 | 0.01% | 0.08% | 0.01% |
| Maryland (State of) 5%, due Mar 15, 2028 | 0.01% | 0.08% | 0.01% |
| Minnesota (State of) 5%, due Oct 1, 2028 | 0.01% | 0.03% | 0.01% |
| Chicago (City of), IL (O'Hare International Airport) 5.25%, due Jan 1, 2028 | 0.04% | 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.