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
81 holdings in all 2 funds| Fund | MUB | TAXF | Positions | Holdings |
|---|---|---|---|---|
| MUBiShares National Muni Bond ETF | — | 1% 81 shared |
7,603 | as of Oct 20, 2026issuer data |
| TAXFAmerican Century Diversified Municipal Bond ETF | 1% 81 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
1.2% common weight| Holding | MUB | TAXF | Smallest |
|---|---|---|---|
| ILLINOIS ST 5%, due Nov 1, 2027 | 0.10% | 0.34% | 0.10% |
| TEXAS WTR DEV BRD REV 5%, due Aug 1, 2041 | 0.06% | 0.18% | 0.06% |
| SALT RIV PROJ AGRIC IMPT & PWR 5%, due Jan 1, 2050 | 0.06% | 0.32% | 0.06% |
| OMAHA PUB PWR DIST NEB ELEC RE 5.5%, due Feb 1, 2054 | 0.05% | 0.16% | 0.05% |
| FORT BEND TEX INDPT SCH DIST 4%, due Aug 1, 2027 | 0.04% | 0.21% | 0.04% |
| ILLINOIS ST 5%, due Nov 1, 2029 | 0.04% | 0.12% | 0.04% |
| SAN ANTONIO TEX ELEC & GAS REV 3.08%, due Dec 1, 2028 | 0.04% | 0.11% | 0.04% |
| NEW YORK N Y CITY MUN WTR FIN 5.25%, due Jun 15, 2052 | 0.03% | 0.08% | 0.03% |
| TRIBOROUGH BRDG & TUNL AUTH N 5.25%, due May 15, 2052 | 0.03% | 0.12% | 0.03% |
| MICHIGAN ST BLDG AUTH REV 4%, due Oct 15, 2049 | 0.03% | 0.12% | 0.03% |
| NEW YORK N Y 5%, due Mar 1, 2050 | 0.03% | 0.11% | 0.03% |
| ILLINOIS ST 5.5%, due Apr 1, 2051 | 0.03% | 0.40% | 0.03% |
| PENNSYLVANIA ST TPK COMMN TPK 5%, due Dec 1, 2048 | 0.03% | 0.10% | 0.03% |
| TEXAS WATER DEV BRD 4%, due Oct 15, 2043 | 0.02% | 0.09% | 0.02% |
| ILLINOIS ST TOLL HWY AUTH TOLL 4%, due Jan 1, 2042 | 0.02% | 0.15% | 0.02% |
| NEW YORK ST URBAN DEV CORP REV 5%, due Mar 15, 2050 | 0.02% | 0.16% | 0.02% |
| ILLINOIS ST TOLL HWY AUTH TOLL 5%, due Jan 1, 2040 | 0.02% | 0.15% | 0.02% |
| CENTRAL TEX REGL MOBILITY AUTH 4%, due Jan 1, 2051 | 0.02% | 0.18% | 0.02% |
| MARYLAND ST 5%, due Jun 1, 2036 | 0.02% | 0.25% | 0.02% |
| NEW YORK N Y 5.25%, due May 1, 2041 | 0.02% | 0.03% | 0.02% |
| NEW YORK ST DORM AUTH ST PERS 5.25%, due Mar 15, 2052 | 0.02% | 0.15% | 0.02% |
| DISTRICT COLUMBIA WTR & SWR AU 4%, due Oct 1, 2051 | 0.02% | 0.07% | 0.02% |
| LOWER COLO RIV AUTH TEX REV 5%, due May 15, 2032 | 0.02% | 0.06% | 0.02% |
| CHICAGO ILL 5.25%, due Jan 1, 2038 | 0.01% | 0.16% | 0.01% |
| CHICAGO ILL 6%, due Jan 1, 2050 | 0.01% | 0.13% | 0.01% |
| NEW YORK N Y 4%, due Aug 1, 2044 | 0.01% | 0.14% | 0.01% |
| OHIO ST WTR DEV AUTH REV 5%, due Dec 1, 2033 | 0.01% | 0.26% | 0.01% |
| ILLINOIS ST 5.5%, due Oct 1, 2039 | 0.01% | 0.17% | 0.01% |
| MASSACHUSETTS ST TRANSN FD REV 5%, due Jun 1, 2052 | 0.01% | 0.16% | 0.01% |
| MARYLAND ST DEPT TRANSN CONS T 5%, due Oct 1, 2028 | 0.01% | 0.21% | 0.01% |
| ENERGY NORTHWEST WASH ELEC REV 5%, due Jul 1, 2039 | 0.01% | 0.20% | 0.01% |
| CHICAGO ILL 4%, due Jan 1, 2035 | 0.01% | 0.07% | 0.01% |
| ILLINOIS ST TOLL HWY AUTH TOLL 5%, due Jan 1, 2042 | 0.01% | 0.19% | 0.01% |
| GEORGIA ST PORTS AUTH REV 5.25%, due Jul 1, 2052 | 0.01% | 0.24% | 0.01% |
| NEW YORK N Y CITY TRANSITIONAL 5%, due Nov 1, 2032 | 0.01% | 0.05% | 0.01% |
| NEBRASKA PUB PWR DIST REV 5%, due Jul 1, 2028 | 0.01% | 0.39% | 0.01% |
| TEXAS WATER DEV BRD 4%, due Aug 1, 2034 | 0.01% | 0.13% | 0.01% |
| ILLINOIS ST TOLL HWY AUTH TOLL 5%, due Jan 1, 2047 | 0.01% | 0.58% | 0.01% |
| BROWARD CNTY FLA WTR & SWR UTI 5%, due Oct 1, 2040 | 0.01% | 0.15% | 0.01% |
| NEW JERSEY ST EDL FACS AUTH RE 5%, due Mar 1, 2032 | 0.01% | 0.11% | 0.01% |
| PALM COAST FLA 5%, due Oct 1, 2056 | 0.01% | 0.39% | 0.01% |
| METROPOLITAN GOVT NASHVILLE & 5%, due Oct 1, 2054 | 0.01% | 0.16% | 0.01% |
| NEW YORK N Y CITY MUN WTR FIN 4%, due Jun 15, 2045 | 0.01% | 0.14% | 0.01% |
| JEFFERSON CNTY ALA SWR REV 5.25%, due Oct 1, 2042 | 0.01% | 0.17% | 0.01% |
| MICHIGAN ST TRUNK LINE 5%, due Nov 15, 2046 | 0.01% | 0.27% | 0.01% |
| NEW YORK N Y 5%, due Apr 1, 2043 | 0.01% | 0.12% | 0.01% |
| PHILADELPHIA PA WTR & WASTEWTR 5.25%, due Sep 1, 2054 | 0.01% | 0.24% | 0.01% |
| MIAMI-DADE CNTY FLA WTR & SWR 4%, due Oct 1, 2046 | 0.01% | 0.07% | 0.01% |
| NEW YORK CITY MUNICIPAL WATER FINA 5%, due Jun 15, 2046 | 0.01% | 0.41% | 0.01% |
| FORT BEND TEX INDPT SCH DIST 3.13%, due Aug 1, 2029 | 0.01% | 0.09% | 0.01% |
| MIAMI-DADE CNTY FLA EDL FACS A 5%, due Apr 1, 2048 | 0.01% | 0.38% | 0.01% |
| WEST VA PKWYS AUTH TPK TOLL RE 5%, due Jun 1, 2047 | 0.01% | 0.09% | 0.01% |
| PENNSYLVANIA ST TPK COMMN TPK 5%, due Dec 1, 2032 | 0.01% | 0.14% | 0.01% |
| DISTRICT COLUMBIA INCOME TAX R 5.25%, due May 1, 2048 | 0.01% | 0.17% | 0.01% |
| ILLINOIS ST 5.5%, due Mar 1, 2042 | 0.01% | 0.20% | 0.01% |
| CENTRAL FLA EXPWY AUTH SR LIEN 5%, due Jul 1, 2037 | 0.01% | 0.17% | 0.01% |
| TEXAS ST 5%, due Aug 1, 2040 | 0.01% | 0.12% | 0.01% |
| PHILADELPHIA PA GAS WKS REV 5.25%, due Aug 1, 2049 | 0.01% | 0.16% | 0.01% |
| ALABAMA FEDERAL AID HIGHWAY FINANC 5%, due Sep 1, 2038 | 0.01% | 0.09% | 0.01% |
| CHICAGO ILL WTR REV 5%, due Nov 1, 2064 | 0.01% | 0.15% | 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.