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
112 holdings in all 2 funds| Fund | BND | MFSB | Positions | Holdings |
|---|---|---|---|---|
| BNDVanguard Total Bond Market | — | 2% 112 shared |
15,758 | as of Sep 30, 2026issuer data |
| MFSBMFS Active Core Plus Bond ETF | 2% 112 shared | — | 406 | 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
2.3% common weight| Holding | BND | MFSB | Smallest |
|---|---|---|---|
| United States Treasury Note/Bond 4.125%, due Oct 31, 2029 | 0.22% | 3.22% | 0.22% |
| United States Treasury Note/Bond 3.875%, due Jul 31, 2030 | 0.21% | 3.49% | 0.21% |
| United States Treasury Note/Bond 4.25%, due Feb 15, 2054 | 0.21% | 0.72% | 0.21% |
| United States Treasury Note/Bond 4.5%, due Nov 15, 2054 | 0.20% | 1.18% | 0.20% |
| United States Treasury Note/Bond 4.75%, due Aug 15, 2055 | 0.18% | 0.34% | 0.18% |
| United States Treasury Note/Bond 4.625%, due Nov 15, 2055 | 0.14% | 3.84% | 0.14% |
| United States Treasury Note/Bond 4.5%, due Feb 15, 2044 | 0.13% | 0.42% | 0.13% |
| United States Treasury Note/Bond 4.875%, due Aug 15, 2045 | 0.13% | 1.19% | 0.13% |
| United States Treasury Note/Bond 4.625%, due Nov 15, 2044 | 0.11% | 1.23% | 0.11% |
| United States Treasury Note/Bond 4.625%, due Nov 15, 2045 | 0.10% | 7.75% | 0.10% |
| Freddie Mac Pool | 0.03% | 0.38% | 0.03% |
| Ginnie Mae II Pool | 0.03% | 0.10% | 0.03% |
| Boeing Co/The 5.805%, due May 1, 2050 | 0.03% | 0.04% | 0.03% |
| Freddie Mac Pool | 0.03% | 0.29% | 0.03% |
| Freddie Mac Pool | 0.02% | 0.20% | 0.02% |
| Freddie Mac Pool | 0.02% | 0.29% | 0.02% |
| Fannie Mae Pool | 0.02% | 0.04% | 0.02% |
| Oracle Corp 5.7%, due Feb 4, 2036 | 0.02% | 0.30% | 0.02% |
| Morgan Stanley 5.32%, due Jul 19, 2035 | 0.02% | 0.11% | 0.02% |
| Fannie Mae Pool | 0.02% | 0.49% | 0.02% |
| Barclays PLC 7.437%, due Nov 2, 2033 | 0.02% | 0.32% | 0.02% |
| Ginnie Mae II Pool | 0.02% | 0.04% | 0.02% |
| Fannie Mae Pool | 0.02% | 0.25% | 0.02% |
| Salesforce Inc 5.55%, due Mar 15, 2036 | 0.01% | 0.46% | 0.01% |
| Oracle Corp 5.2%, due Sep 26, 2035 | 0.01% | 0.08% | 0.01% |
| Morgan Stanley 5.664%, due Apr 17, 2036 | 0.01% | 0.56% | 0.01% |
| Mexico Government International Bond 6.875%, due May 13, 2037 | 0.01% | 0.15% | 0.01% |
| Charter Communications Operating LLC / Charter Communications Operating Capital 6.384%, due Oct 23, 2035 | 0.01% | 0.13% | 0.01% |
| Freddie Mac Pool | 0.01% | 0.15% | 0.01% |
| Goldman Sachs Group Inc/The 2.65%, due Oct 21, 2032 | 0.01% | 0.09% | 0.01% |
| Freddie Mac Pool | 0.01% | 0.04% | 0.01% |
| Oracle Corp 5.95%, due Sep 26, 2055 | 0.01% | 0.02% | 0.01% |
| JPMorgan Chase & Co 4.946%, due Oct 22, 2035 | 0.01% | 0.53% | 0.01% |
| T-Mobile USA Inc 2.55%, due Feb 15, 2031 | 0.01% | 0.06% | 0.01% |
| Bank of America Corp 5.744%, due Feb 12, 2036 | 0.01% | 0.45% | 0.01% |
| Morgan Stanley 5.449%, due Jul 20, 2029 | 0.01% | 0.07% | 0.01% |
| BBCMS Mortgage Trust 2025-C39, due Nov 15, 2035 | 0.01% | 0.04% | 0.01% |
| Mexico Government International Bond 6.625%, due Jan 29, 2038 | 0.01% | 0.12% | 0.01% |
| Capital One Financial Corp 6.377%, due Jun 8, 2034 | 0.01% | 0.05% | 0.01% |
| JPMorgan Chase & Co 5.766%, due Apr 22, 2035 | 0.01% | 0.15% | 0.01% |
| Goldman Sachs Group Inc/The 3.102%, due Feb 24, 2033 | 0.01% | 0.45% | 0.01% |
| Ginnie Mae II Pool | 0.01% | 0.07% | 0.01% |
| Bank of America Corp 5.288%, due Apr 25, 2034 | 0.01% | 0.08% | 0.01% |
| Broadcom Inc 4.8%, due Feb 15, 2036 | 0.01% | 0.32% | 0.01% |
| Philip Morris International Inc 5.375%, due Feb 15, 2033 | 0.01% | 0.18% | 0.01% |
| Boeing Co/The 6.528%, due May 1, 2034 | 0.01% | 0.55% | 0.01% |
| Capital One Financial Corp 6.051%, due Feb 1, 2035 | 0.01% | 0.02% | 0.01% |
| Deutsche Bank AG/New York NY 5.403%, due Sep 11, 2035 | 0.01% | 0.34% | 0.01% |
| JBS NV/JBS USA Foods Group Holdings Inc/JBS USA Food Co Holdings 5.75%, due Apr 1, 2033 | 0.01% | 0.27% | 0.01% |
| Capital One Financial Corp 5.197%, due Sep 11, 2036 | 0.01% | 0.38% | 0.01% |
| Philip Morris International Inc 5.25%, due Feb 13, 2034 | 0.01% | 0.04% | 0.01% |
| Rogers Communications Inc 3.8%, due Mar 15, 2032 | 0.01% | 0.44% | 0.01% |
| Vodafone Group PLC 5.625%, due Feb 10, 2053 | 0.01% | 0.08% | 0.01% |
| Morgan Stanley 5.942%, due Feb 7, 2039 | 0.01% | 0.06% | 0.01% |
| Regal Rexnord Corp 6.4%, due Apr 15, 2033 | 0.01% | 0.33% | 0.01% |
| Wells Fargo & Co 3.35%, due Mar 2, 2033 | 0.01% | 0.11% | 0.01% |
| Mexico Government International Bond 6%, due May 7, 2036 | 0.01% | 0.05% | 0.01% |
| Energy Transfer LP 5.35%, due Jan 15, 2036 | 0.01% | 0.50% | 0.01% |
| BAT Capital Corp 6.343%, due Aug 2, 2030 | 0.00% | 0.06% | 0.00% |
| Occidental Petroleum Corp 5.55%, due Oct 1, 2034 | 0.00% | 0.17% | 0.00% |
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.