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
100 holdings in all 2 funds| Fund | PZA | TAXF | Positions | Holdings |
|---|---|---|---|---|
| PZAInvesco National AMT-Free Municipal Bond ETF | — | 2% 100 shared |
6,664 | as of May 31, 2026SEC filing |
| TAXFAmerican Century Diversified Municipal Bond ETF | 2% 100 shared | — | 754 | as of May 31, 2026SEC filing |
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
2.2% common weight| Holding | PZA | TAXF | Smallest |
|---|---|---|---|
| New York (State of) Dormitory Authority 5.25%, due Mar 15, 2052 | 0.09% | 0.15% | 0.09% |
| New York (City of), NY Municipal Water Finance Authority 5.25%, due Jun 15, 2052 | 0.08% | 0.08% | 0.08% |
| North Texas Tollway Authority 5%, due Jan 1, 2043 | 0.07% | 0.21% | 0.07% |
| Salt River Project Agricultural Improvement & Power District 5%, due Jan 1, 2048 | 0.07% | 0.32% | 0.07% |
| Triborough Bridge & Tunnel Authority 5.25%, due May 15, 2052 | 0.07% | 0.12% | 0.07% |
| Texas (State of) Water Development Board 4%, due Oct 15, 2043 | 0.06% | 0.09% | 0.06% |
| Chicago (City of), IL 6%, due Jan 1, 2050 | 0.06% | 0.13% | 0.06% |
| Martin (County of), FL Health Facilities Authority 4%, due Jan 1, 2046 | 0.05% | 0.10% | 0.05% |
| District of Columbia 5.25%, due May 1, 2048 | 0.05% | 0.17% | 0.05% |
| New York City Municipal Water Finance Authority 5%, due Jun 15, 2046 | 0.05% | 0.41% | 0.05% |
| New York (City of), NY 4%, due Jun 15, 2045 | 0.05% | 0.14% | 0.05% |
| State of Illinois 5.5%, due Apr 1, 2051 | 0.04% | 0.40% | 0.04% |
| New York (City of), NY 5%, due Apr 1, 2043 | 0.04% | 0.12% | 0.04% |
| Hillsborough (County of), FL Industrial Development Authority (Baycare Health System) 5.25%, due Nov 15, 2049 | 0.04% | 0.24% | 0.04% |
| Salt River Project Agricultural Improvement & Power District 5%, due Jan 1, 2050 | 0.04% | 0.32% | 0.04% |
| Illinois (State of) Toll Highway Authority 5%, due Jan 1, 2042 | 0.04% | 0.19% | 0.04% |
| Triborough Bridge & Tunnel Authority (MTA Bridges & Tunnels) 5%, due Nov 15, 2051 | 0.04% | 0.09% | 0.04% |
| Illinois (State of) 5.5%, due Mar 1, 2042 | 0.04% | 0.20% | 0.04% |
| Illinois (State of) Toll Highway Authority 5.25%, due Jan 1, 2043 | 0.03% | 0.06% | 0.03% |
| Massachusetts (Commonwealth of) (Rail Enhancement Program) 5%, due Jun 1, 2052 | 0.03% | 0.16% | 0.03% |
| Illinois State Toll Highway Authority 5%, due Jan 1, 2047 | 0.03% | 0.58% | 0.03% |
| Lansing (City of), MI Board of Water & Light 5%, due Jul 1, 2049 | 0.03% | 0.18% | 0.03% |
| Cobb (County of), GA Kennestone Hospital Authority (Wellstar Health System, Inc.) 4%, due Apr 1, 2052 | 0.03% | 0.14% | 0.03% |
| Colorado (State of) Health Facilities Authority (Adventhealth Obligated Group) 4%, due Nov 15, 2043 | 0.03% | 0.05% | 0.03% |
| Michigan (State of) 5%, due Nov 15, 2046 | 0.03% | 0.27% | 0.03% |
| New York (City of), NY Municipal Water Finance Authority 5%, due Jun 15, 2043 | 0.03% | 0.16% | 0.03% |
| Oklahoma (State of) Water Resources Board (2019 Master Trust), due Apr 1, 2048 | 0.03% | 0.14% | 0.03% |
| Triborough Bridge & Tunnel Authority (MTA Bridges & Tunnels) 4%, due Nov 15, 2054 | 0.03% | 0.14% | 0.03% |
| Omaha (City of), NE Public Power District 5.5%, due Feb 1, 2054 | 0.03% | 0.16% | 0.03% |
| County of Pasco FL 5.75%, due Sep 1, 2054 | 0.03% | 0.05% | 0.03% |
| Tarrant County Cultural Education Facilities Finance Corp. 5%, due Nov 15, 2044 | 0.03% | 0.04% | 0.03% |
| Pennsylvania (Commonwealth of) Turnpike Commission 5%, due Dec 1, 2048 | 0.03% | 0.10% | 0.03% |
| Colorado (State of) Health Facilities Authority (CommonSpirit Health) 5.5%, due Nov 1, 2047 | 0.03% | 0.03% | 0.03% |
| Georgia (State of) Ports Authority 5.25%, due Jul 1, 2052 | 0.03% | 0.24% | 0.03% |
| Nashville (City of) & Davidson (County of), TN Metropolitan Government Health & Educational Facilities Board (The) (Vand 5%, due Oct 1, 2054 | 0.03% | 0.16% | 0.03% |
| California (State of) Municipal Finance Authority (Palomar Health) 5.25%, due Nov 1, 2052 | 0.04% | 0.03% | 0.03% |
| Dallas (City of), TX 5%, due Oct 1, 2047 | 0.03% | 0.04% | 0.03% |
| Clifton Higher Education Finance Corp. (Idea Public Schools) 4%, due Aug 15, 2042 | 0.02% | 0.07% | 0.02% |
| Las Vegas (City of), NV Convention & Visitors Authority 5%, due Jul 1, 2049 | 0.02% | 0.09% | 0.02% |
| Broward (County of), FL 4%, due Oct 1, 2047 | 0.02% | 0.13% | 0.02% |
| New York (City of), NY 4%, due Aug 1, 2044 | 0.02% | 0.14% | 0.02% |
| Massachusetts Development Finance Agency 5.5%, due Dec 1, 2056 | 0.02% | 0.16% | 0.02% |
| King County Public Hospital District No 2, due Dec 1, 2050 | 0.02% | 0.33% | 0.02% |
| New York (City of), NY 4%, due Sep 1, 2046 | 0.02% | 0.04% | 0.02% |
| Orlando (City of), FL Utilities Commission 5%, due Oct 1, 2048 | 0.02% | 0.48% | 0.02% |
| New York (City of), NY 5%, due Mar 1, 2050 | 0.02% | 0.11% | 0.02% |
| Philadelphia (City of), PA 5.25%, due Sep 1, 2054 | 0.02% | 0.24% | 0.02% |
| Private Colleges & Universities Authority (The Savannah College of Art and Design) 4%, due Apr 1, 2044 | 0.02% | 0.19% | 0.02% |
| New Hampshire (State of) Business Finance Authority (NCCD - Unr Properties LLC - University of Nevada, Reno Project) 5.25%, due Jun 1, 2051 | 0.02% | 0.16% | 0.02% |
| Miami-Dade (County of), FL 4%, due Oct 1, 2044 | 0.02% | 0.15% | 0.02% |
| Jefferson (County of), AL 5.25%, due Oct 1, 2042 | 0.02% | 0.17% | 0.02% |
| Allen (County of), OH 4%, due Aug 1, 2047 | 0.02% | 0.20% | 0.02% |
| Maryland (State of) Stadium Authority 5%, due May 1, 2042 | 0.02% | 0.10% | 0.02% |
| Massachusetts (Commonwealth of) School Building Authority (Social Bonds) 5%, due Aug 15, 2045 | 0.02% | 0.12% | 0.02% |
| City of Palm Coast FL Utility Revenue 5%, due Oct 1, 2056 | 0.01% | 0.39% | 0.01% |
| Kentucky (Commonwealth of) Economic Development Finance Authority (Owensboro Health, Inc.) 5.25%, due Jun 1, 2041 | 0.02% | 0.01% | 0.01% |
| Massachusetts (Commonwealth of) 5%, due Jun 1, 2043 | 0.01% | 0.19% | 0.01% |
| Park Creek Metropolitan District 4%, due Dec 1, 2046 | 0.01% | 0.07% | 0.01% |
| Central Texas Regional Mobility Authority 4%, due Jan 1, 2051 | 0.01% | 0.18% | 0.01% |
| Tarrant (County of), TX Hospital District 4.25%, due Aug 15, 2048 | 0.01% | 0.07% | 0.01% |
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.