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
168 holdings in all 2 funds| Fund | SUB | VSDM | Positions | Holdings |
|---|---|---|---|---|
| SUBiShares Short-Term National Muni Bond ETF | — | 3% 168 shared |
3,066 | as of Oct 20, 2026issuer data |
| VSDMVanguard Short Duration Tax-Exempt Bond ETF | 3% 168 shared | — | 3,623 | 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
3.0% common weight| Holding | SUB | VSDM | Smallest |
|---|---|---|---|
| FORT BEND TEX INDPT SCH DIST 4%, due Aug 1, 2027 | 0.14% | 0.12% | 0.12% |
| ILLINOIS ST 5%, due Nov 1, 2028 | 0.10% | 0.21% | 0.10% |
| CHICAGO ILL WTR REV 5%, due Nov 1, 2030 | 0.10% | 0.12% | 0.10% |
| ILLINOIS ST 5%, due Nov 1, 2029 | 0.13% | 0.10% | 0.10% |
| UNIVERSITY WASH UNIV REVS 4%, due Aug 1, 2027 | 0.10% | 0.09% | 0.09% |
| BAY AREA TOLL AUTH CALIF TOLL 2%, due Apr 1, 2028 | 0.26% | 0.07% | 0.07% |
| CALIFORNIA (STATE OF) 5%, due Aug 1, 2028 | 0.07% | 0.08% | 0.07% |
| ROUND ROCK TEX INDPT SCH DIST 5%, due Aug 1, 2031 | 0.08% | 0.07% | 0.07% |
| METROPOLITAN TRANSN AUTH N Y R 5%, due May 15, 2030 | 0.07% | 0.26% | 0.07% |
| NEW JERSEY ECONOMIC DEVELOPMENT AU 5%, due Jun 15, 2031 | 0.08% | 0.06% | 0.06% |
| TEXAS TRANSPORTATION COMMISSION 5%, due Oct 1, 2028 | 0.06% | 0.07% | 0.06% |
| SAN ANTONIO TEX ELEC & GAS REV 3.2%, due Dec 1, 2030 | 0.11% | 0.05% | 0.05% |
| NEBRASKA PUB PWR DIST REV 5%, due Jul 1, 2031 | 0.07% | 0.04% | 0.04% |
| SAN ANTONIO TEX ELEC & GAS REV 3%, due Dec 1, 2029 | 0.04% | 0.08% | 0.04% |
| NEW YORK CITY OF 5%, due Aug 1, 2031 | 0.06% | 0.04% | 0.04% |
| CALIFORNIA (STATE OF) 5%, due Aug 1, 2027 | 0.04% | 0.07% | 0.04% |
| NEW YORK N Y 5%, due Aug 1, 2031 | 0.06% | 0.04% | 0.04% |
| CALIFORNIA (STATE OF) 5%, due Aug 1, 2030 | 0.04% | 0.07% | 0.04% |
| MASSACHUSETTS ST DEV FIN AGY R 5%, due Feb 15, 2031 | 0.12% | 0.04% | 0.04% |
| METROPOLITAN TRANSPORTATION AUTHOR 5%, due Nov 15, 2029 | 0.07% | 0.04% | 0.04% |
| METROPOLITAN GOVT NASHVILLE & 5%, due Jan 1, 2031 | 0.08% | 0.03% | 0.03% |
| PENNSYLVANIA ST TURNPIKE COMMISSIO 5%, due Dec 1, 2031 | 0.03% | 0.03% | 0.03% |
| SAN ANTONIO TX 5%, due Feb 1, 2031 | 0.03% | 0.04% | 0.03% |
| NEW CANEY TEX INDPT SCH DIST 4%, due Aug 15, 2027 | 0.03% | 0.07% | 0.03% |
| LOWER COLO RIV AUTH TEX REV 5%, due May 15, 2028 | 0.03% | 0.17% | 0.03% |
| NEW YORK N Y 5%, due Aug 1, 2029 | 0.08% | 0.03% | 0.03% |
| PHILADELPHIA PA CITY OF 5%, due Oct 1, 2027 | 0.03% | 0.03% | 0.03% |
| METROPOLITAN TRANSN AUTH N Y R 5%, due Nov 15, 2031 | 0.03% | 0.03% | 0.03% |
| ILLINOIS FINANCE AUTHORITY 5%, due Apr 1, 2030 | 0.04% | 0.03% | 0.03% |
| SAN ANTONIO TX 3.5%, due Feb 1, 2056 | 0.02% | 0.10% | 0.02% |
| CHICAGO ILL TRAN AUTH CAP GRNT 5%, due Jun 1, 2029 | 0.02% | 0.03% | 0.02% |
| SAN ANTONIO TEX ELEC & GAS REV 2%, due Dec 1, 2027 | 0.04% | 0.02% | 0.02% |
| CHICAGO ILL 5%, due Jan 1, 2028 | 0.04% | 0.02% | 0.02% |
| GRAND PARKWAY TRANSN CORP TEX 5%, due Apr 1, 2028 | 0.02% | 0.05% | 0.02% |
| NEW ORLEANS LA 5%, due Dec 1, 2029 | 0.05% | 0.02% | 0.02% |
| CALIFORNIA (STATE OF) 5%, due Aug 1, 2031 | 0.39% | 0.02% | 0.02% |
| HOUSTON TEX INDPT SCH DIST 5%, due Jul 15, 2028 | 0.02% | 0.03% | 0.02% |
| NEW YORK CITY OF 5%, due Aug 1, 2031 | 0.06% | 0.02% | 0.02% |
| LOS ANGELES CALIF DEPT WTR & P 5%, due Jul 1, 2030 | 0.15% | 0.02% | 0.02% |
| SOUTHERN CALIF PUB PWR AUTH SO 5%, due Jul 1, 2029 | 0.02% | 0.21% | 0.02% |
| ARGYLE TEX INDPT SCH DIST 4%, due Aug 15, 2027 | 0.02% | 0.02% | 0.02% |
| DORMITORY AUTHORITY OF STATE OF NE 5%, due Oct 1, 2030 | 0.08% | 0.02% | 0.02% |
| CALIFORNIA ST 5%, due Oct 1, 2029 | 0.15% | 0.02% | 0.02% |
| NORTHSIDE TEX INDPT SCH DIST 3.1%, due Aug 1, 2029 | 0.02% | 0.03% | 0.02% |
| DISTRICT COLUMBIA WTR & SWR AU 3%, due Oct 1, 2027 | 0.06% | 0.02% | 0.02% |
| MASSACHUSETTS ST DEV FIN AGY 5%, due Oct 1, 2031 | 0.10% | 0.02% | 0.02% |
| TEXAS PUB FIN AUTH LEASE REV 5%, due Feb 1, 2029 | 0.02% | 0.03% | 0.02% |
| LONG IS PWR AUTH N Y ELEC SYS 3%, due Sep 1, 2028 | 0.13% | 0.02% | 0.02% |
| NEW YORK N Y CITY TRANSITIONAL 5%, due Nov 1, 2029 | 0.02% | 0.02% | 0.02% |
| SAN ANTONIO TX 5%, due Feb 1, 2031 | 0.03% | 0.02% | 0.02% |
| SALES TAX SECURITIZATION CORP 5%, due Jan 1, 2030 | 0.02% | 0.02% | 0.02% |
| FORT BEND TEX INDPT SCH DIST 3.13%, due Aug 1, 2029 | 0.02% | 0.02% | 0.02% |
| BROWARD CNTY FLA SCH BRD CTFS 5%, due Jul 1, 2031 | 0.02% | 0.05% | 0.02% |
| AQUARION WATER AUTHORITY CT 5.25%, due Feb 1, 2031 | 0.09% | 0.02% | 0.02% |
| NEBRASKA PUB PWR DIST REV 5%, due Jul 1, 2028 | 0.02% | 0.07% | 0.02% |
| SAN ANTONIO TX 5%, due Feb 1, 2030 | 0.02% | 0.05% | 0.02% |
| LONG ISLAND POWER AUTHORITY 3.4%, due Sep 1, 2051 | 0.07% | 0.02% | 0.02% |
| CHICAGO ILL WTR REV 5%, due Nov 1, 2029 | 0.02% | 0.01% | 0.01% |
| DORMITORY AUTHORITY OF STATE OF NE 5%, due Oct 1, 2031 | 0.09% | 0.01% | 0.01% |
| SCHOOL DISTRICT OF PHILADELPHIA 5%, due Sep 1, 2027 | 0.01% | 0.03% | 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.