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
17 holdings in all 2 funds| Fund | CGSM | MMSD | Positions | Holdings |
|---|---|---|---|---|
| CGSMCapital Group Short Duration Municipal Income ETF | — | 3% 17 shared |
1,100 | as of Oct 20, 2026issuer data |
| MMSDNYLIM MacKay Muni Short Duration ETF | 3% 17 shared | — | 155 | as of Jul 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
2.6% common weight| Holding | CGSM | MMSD | Smallest |
|---|---|---|---|
| SOUTHEAST ENERGY AUTHORITY A C SEEPWR 10/30 FIXED 5, due Oct 15, 2030 | 0.60% | 1.36% | 0.60% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 06/31 FIXED 5, due Jun 15, 2031 | 0.54% | 1.34% | 0.54% |
| KENTUCKY ST PUBLIC ENERGY AUTH KYSPWR 06/55 ADJUSTABLE VAR, due Jun 15, 2055 | 0.56% | 0.54% | 0.54% |
| SAN JOSE CA MF HSG REVENUE SJSMFH 05/66 ADJUSTABLE VAR, due May 15, 2066 | 0.15% | 1.27% | 0.15% |
| ATLANTA GA URBAN RSDL FIN AUTH ATLMFH 05/29 ADJUSTABLE VAR, due May 15, 2029 | 0.14% | 1.28% | 0.14% |
| OHIO ST AIR QUALITY DEV AUTH OHSDEV 09/29 FIXED 3.25, due Sep 15, 2029 | 0.09% | 0.59% | 0.09% |
| SOUTHGLENN CO MET DIST SPL REV SOGMET 12/30 FIXED 5, due Dec 15, 2030 | 0.08% | 0.97% | 0.08% |
| NORTH CAROLINA ST MED CARE COM NCSMED 10/30 FIXED 3.75, due Oct 15, 2030 | 0.07% | 0.26% | 0.07% |
| UTAH ST HSG CORP MF REVENUE UTSMFH 09/45 ADJUSTABLE VAR, due Sep 15, 2045 | 0.06% | 0.75% | 0.06% |
| KENTUCKY ST PUBLIC ENERGY AUTH KYSPWR 02/50 ADJUSTABLE VAR, due Feb 15, 2050 | 0.06% | 0.65% | 0.06% |
| HENDERSON KY EXEMPT FACS REVEN HENFAC 01/32 FIXED 3.7, due Jan 15, 2032 | 0.05% | 0.64% | 0.05% |
| OHIO ST HSG FIN AGY RSDL MTGE OHSHSG 03/57 FIXED 6.25, due Mar 15, 2057 | 0.05% | 0.71% | 0.05% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 12/31 FIXED 5, due Dec 15, 2031 | 0.05% | 0.67% | 0.05% |
| PHOENIX AZ INDL DEV AUTH HLTHC PHOMED 11/52 ADJUSTABLE VAR, due Nov 15, 2052 | 0.04% | 0.90% | 0.04% |
| W CORNWALL TWP PA MUNI AUTH WCOFAC 11/29 FIXED 3.7, due Nov 15, 2029 | 0.04% | 0.99% | 0.04% |
| MARICOPA CNTY AZ INDL DEV AUTH MARGEN 05/33 FIXED OID 4.375, due May 15, 2033 | 0.03% | 0.62% | 0.03% |
| NORTHLAKE STEWARDSHIP DIST FL NLSGEN 05/31 FIXED 4.1, due May 15, 2031 | 0.02% | 0.41% | 0.02% |
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.