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
69 holdings in all 2 funds| Fund | CGMU | MFSM | Positions | Holdings |
|---|---|---|---|---|
| CGMUCapital Group Municipal Income ETF | — | 4% 69 shared |
2,928 | as of Nov 5, 2026issuer data |
| MFSMMFS Active Intermediate Muni Bond ETF | 4% 69 shared | — | 418 | as of Aug 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
4.3% common weight| Holding | CGMU | MFSM | Smallest |
|---|---|---|---|
| BLACK BELT ENERGY GAS DIST AL BBEUTL 06/36 FIXED 5.25, due Jun 15, 2036 | 0.52% | 0.32% | 0.32% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 06/36 FIXED 5, due Jun 15, 2036 | 0.27% | 0.49% | 0.27% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 10/33 FIXED 5, due Oct 15, 2033 | 0.27% | 0.42% | 0.27% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 07/33 FIXED 5, due Jul 15, 2033 | 0.21% | 0.28% | 0.21% |
| CALIFORNIA CMNTY CHOICE FING A CCEDEV 12/55 ADJUSTABLE VAR, due Dec 15, 2055 | 0.19% | 0.70% | 0.19% |
| CALIFORNIA CMNTY CHOICE FING A CCEDEV 06/36 FIXED 5, due Jun 15, 2036 | 0.37% | 0.18% | 0.18% |
| PUERTO RICO SALES TAX FING COR PRCGEN 07/40 FIXED 4.329, due Jul 15, 2040 | 0.18% | 0.24% | 0.18% |
| FLORIDA ST DEV FIN CORP FLSDEV 07/44 FIXED 5, due Jul 15, 2044 | 0.14% | 0.17% | 0.14% |
| SOUTHEAST ENERGY AUTHORITY A C SEEPWR 11/35 FIXED 5, due Nov 15, 2035 | 0.13% | 0.24% | 0.13% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 12/34 FIXED 5, due Dec 15, 2034 | 0.12% | 0.39% | 0.12% |
| HOUSTON TX ARPT SYS REVENUE HOUAPT 07/34 FIXED 5.25, due Jul 15, 2034 | 0.12% | 0.15% | 0.12% |
| CALIFORNIA CMNTY CHOICE FING A CCEDEV 10/56 ADJUSTABLE VAR, due Oct 15, 2056 | 0.11% | 0.25% | 0.11% |
| MISSION TX ECON DEV CORP SOL W MISPOL 12/64 ADJUSTABLE VAR, due Dec 15, 2064 | 0.11% | 0.10% | 0.10% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 10/55 ADJUSTABLE VAR, due Oct 15, 2055 | 0.10% | 0.25% | 0.10% |
| PEFA INC IA GAS PROJ REVENUE PEFUTL 04/35 FIXED 5, due Apr 15, 2035 | 0.09% | 0.10% | 0.09% |
| NATIONAL FIN AUTH NH MUNI CTFS NFADEV 01/41 ADJUSTABLE VAR, due Jan 15, 2041 | 0.20% | 0.09% | 0.09% |
| MAIN STREET NATURAL GAS INC GA MAIUTL 05/54 ADJUSTABLE VAR, due May 15, 2054 | 0.08% | 0.21% | 0.08% |
| WHITING IN ENVRNMNTL FACS REVE WHGFAC 12/44 ADJUSTABLE VAR, due Dec 15, 2044 | 0.08% | 0.10% | 0.08% |
| NEW MEXICO ST MUNI ENERGY ACQU NMSPWR 06/54 ADJUSTABLE VAR, due Jun 15, 2054 | 0.08% | 0.10% | 0.08% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 12/34 FIXED 5, due Dec 15, 2034 | 0.08% | 0.10% | 0.08% |
| CALIFORNIA CMNTY CHOICE FING A CCEDEV 07/35 FIXED 5, due Jul 15, 2035 | 0.08% | 0.10% | 0.08% |
| CALIFORNIA CMNTY CHOICE FING A CCEDEV 02/36 FIXED 5.25, due Feb 15, 2036 | 0.08% | 0.10% | 0.08% |
| BALDWIN CNTY AL INDL DEV AUTH BLWPOL 06/55 ADJUSTABLE VAR, due Jun 15, 2055 | 0.07% | 0.10% | 0.07% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 03/55 ADJUSTABLE VAR, due Mar 15, 2055 | 0.07% | 0.25% | 0.07% |
| NORTH CAROLINA HSG FIN AGY HOM NCSHSG 07/57 FIXED 6.25, due Jul 15, 2057 | 0.07% | 0.14% | 0.07% |
| ENERGY S E AL A COOPERATIVE DI ESDPWR 11/33 FIXED 5, due Nov 15, 2033 | 0.07% | 0.10% | 0.07% |
| MAIN STREET NATURAL GAS INC GA MAIUTL 06/55 ADJUSTABLE VAR, due Jun 15, 2055 | 0.07% | 0.35% | 0.07% |
| CALIFORNIA CMNTY CHOICE FING A CCEDEV 02/55 ADJUSTABLE VAR, due Feb 15, 2055 | 0.07% | 0.51% | 0.07% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 12/52 ADJUSTABLE VAR, due Dec 15, 2052 | 0.06% | 0.16% | 0.06% |
| BLACK BELT ENERGY GAS DIST AL BBEUTL 12/35 FIXED 5, due Dec 15, 2035 | 0.06% | 0.19% | 0.06% |
| PAULDING CNTY GA HOSP AUTH PAUMED 04/36 FIXED 5, due Apr 15, 2036 | 0.05% | 0.53% | 0.05% |
| NEW YORK ST TRANSPRTN DEV CORP NYTTRN 04/35 FIXED 6, due Apr 15, 2035 | 0.04% | 0.26% | 0.04% |
| MISSION TX ECON DEV CORP SOL W MISPOL 12/64 ADJUSTABLE VAR, due Dec 15, 2064 | 0.04% | 0.10% | 0.04% |
| CALIFORNIA HSG FIN AGY MUNI CT CASHSG 09/36 FIXED 4.375, due Sep 15, 2036 | 0.04% | 0.23% | 0.04% |
| CARROLL CNTY KY ENVRNMNTL FACS CRRENV 10/34 FIXED 4.25, due Oct 15, 2034 | 0.03% | 0.10% | 0.03% |
| ARKANSAS ST DEV FIN AUTH RESOU ARSPOL 10/65 ADJUSTABLE VAR, due Oct 15, 2065 | 0.03% | 0.10% | 0.03% |
| TEXAS ST DEPT OF HSG CMNTY A TXSSFH 01/56 FIXED 5.75, due Jan 15, 2056 | 0.03% | 0.26% | 0.03% |
| BALDWIN CNTY AL INDL DEV AUTH BLWPOL 03/56 ADJUSTABLE VAR, due Mar 15, 2056 | 0.03% | 0.10% | 0.03% |
| CALIFORNIA CMNTY CHOICE FING A CCEDEV 03/36 FIXED 5, due Mar 15, 2036 | 0.03% | 0.15% | 0.03% |
| HOUSTON TX HOTEL OCCUPANCY TAX HOUFAC 09/39 FIXED 5, due Sep 15, 2039 | 0.03% | 0.51% | 0.03% |
| NEW YORK ST TRANSPRTN DEV CORP NYTTRN 01/29 FIXED 5, due Jan 15, 2029 | 0.03% | 0.12% | 0.03% |
| GRAND PARKWAY TRANSPRTN CORP T GPTTRN 10/43 FIXED 5, due Oct 15, 2043 | 0.03% | 0.29% | 0.03% |
| WASHINGTON ST WAS 08/46 FIXED 5, due Aug 15, 2046 | 0.03% | 0.10% | 0.03% |
| PENNSYLVANIA HGR EDU ASSISTANC PASSTD 06/46 FIXED OID 4.75, due Jun 15, 2046 | 0.02% | 0.08% | 0.02% |
| NEW YORK ST TRANSPRTN DEV CORP NYTTRN 12/32 FIXED 5, due Dec 15, 2032 | 0.02% | 0.21% | 0.02% |
| PUERTO RICO CMWLTH PRC 07/27 FIXED 5.625, due Jul 15, 2027 | 0.02% | 0.15% | 0.02% |
| PENNSYLVANIA HGR EDU ASSISTANC PASSTD 06/45 FIXED OID 4.125, due Jun 15, 2045 | 0.01% | 0.10% | 0.01% |
| BRAZOS TX HGR EDU AUTH STUDENT BRASTD 04/35 FIXED 5, due Apr 15, 2035 | 0.01% | 0.54% | 0.01% |
| MAINE ST FIN AUTH SOL WST DISP MESPOL 12/47 ADJUSTABLE VAR, due Dec 15, 2047 | 0.01% | 0.10% | 0.01% |
| NEW YORK ST TRANSPRTN DEV CORP NYTTRN 06/42 FIXED 5.5, due Jun 15, 2042 | 0.01% | 0.24% | 0.01% |
| MISSION TX ECON DEV CORP SOL W MISPOL 12/64 ADJUSTABLE VAR, due Dec 15, 2064 | 0.01% | 0.10% | 0.01% |
| NEW HOPE CULTURAL ED FACS FIN NHPFAC 10/30 FIXED 4.25, due Oct 15, 2030 | 0.01% | 0.10% | 0.01% |
| SOUTH CAROLINA ST PUBLIC SVC A SCSUTL 12/38 FIXED 5, due Dec 15, 2038 | 0.01% | 0.08% | 0.01% |
| RHODE ISLAND ST STUDENT LOAN A RISSTD 12/43 FIXED OID 4.125, due Dec 15, 2043 | 0.01% | 0.06% | 0.01% |
| MAINE ST FIN AUTH SOL WST DISP MESPOL 08/35 FIXED 5, due Aug 15, 2035 | 0.01% | 0.10% | 0.01% |
| COLORADO ST HLTH FACS AUTH REV COSMED 12/35 FIXED 5, due Dec 15, 2035 | 0.01% | 0.25% | 0.01% |
| CONNECTICUT ST HLTH EDUCTNL CTSHGR 12/31 FIXED 4.4, due Dec 15, 2031 | 0.01% | 0.18% | 0.01% |
| BUCKEYE OH TOBACCO SETTLEMENT BUCGEN 06/33 FIXED 5, due Jun 15, 2033 | 0.01% | 0.26% | 0.01% |
| CHESTER CNTY PA HLTH EDU FAC CHEMED 06/46 FIXED 5.125, due Jun 15, 2046 | 0.01% | 0.19% | 0.01% |
| ARKANSAS ST DEV FIN AUTH SF MT ARSSFH 07/57 ADJUSTABLE VAR, due Jul 15, 2057 | 0.01% | 0.10% | 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.