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
1860 holdings in all 2 funds| Fund | BIV | SPAB | Positions | Holdings |
|---|---|---|---|---|
| BIVVanguard Intermediate-Term Bond ETF | — | 18% 1860 shared |
2,377 | as of Sep 30, 2026issuer data |
| SPABState Street SPDR Portfolio Aggregate Bond ETF | 18% 1860 shared | — | 8,773 | 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
17.9% common weight| Holding | BIV | SPAB | Smallest |
|---|---|---|---|
| United States Treasury Note/Bond 4.25%, due May 15, 2035 | 2.04% | 0.50% | 0.50% |
| United States Treasury Note/Bond 5%, due Sep 30, 2033 | 0.65% | 0.43% | 0.43% |
| United States Treasury Note/Bond 4.125%, due Feb 15, 2036 | 2.05% | 0.41% | 0.41% |
| United States Treasury Note/Bond 4.375%, due May 15, 2036 | 2.06% | 0.35% | 0.35% |
| United States Treasury Note/Bond 4.25%, due Nov 15, 2034 | 2.07% | 0.35% | 0.35% |
| United States Treasury Note/Bond 4%, due Feb 15, 2034 | 2.13% | 0.34% | 0.34% |
| United States Treasury Note/Bond 3.375%, due May 15, 2033 | 1.64% | 0.33% | 0.33% |
| United States Treasury Note/Bond 4.375%, due May 15, 2034 | 2.11% | 0.33% | 0.33% |
| United States Treasury Note/Bond 4.5%, due Nov 15, 2033 | 2.03% | 0.33% | 0.33% |
| United States Treasury Note/Bond 4.625%, due Feb 15, 2035 | 2.09% | 0.33% | 0.33% |
| United States Treasury Note/Bond 3.875%, due Aug 15, 2034 | 2.00% | 0.33% | 0.33% |
| United States Treasury Note/Bond 4.5%, due Aug 31, 2033 | 0.98% | 0.32% | 0.32% |
| United States Treasury Note/Bond 4.25%, due Aug 15, 2035 | 2.03% | 0.32% | 0.32% |
| United States Treasury Note/Bond 3.625%, due Sep 30, 2031 | 0.39% | 0.30% | 0.30% |
| United States Treasury Note/Bond 3.5%, due Feb 15, 2033 | 1.66% | 0.29% | 0.29% |
| United States Treasury Note/Bond 4%, due Nov 15, 2035 | 2.03% | 0.29% | 0.29% |
| United States Treasury Note/Bond 3.875%, due Aug 15, 2033 | 1.84% | 0.29% | 0.29% |
| United States Treasury Note/Bond 1.875%, due Feb 15, 2032 | 1.64% | 0.28% | 0.28% |
| United States Treasury Note/Bond 4.625%, due Aug 15, 2036 | 1.63% | 0.27% | 0.27% |
| United States Treasury Note/Bond 2.75%, due Aug 15, 2032 | 1.57% | 0.24% | 0.24% |
| United States Treasury Note/Bond 4%, due Jun 30, 2032 | 0.75% | 0.24% | 0.24% |
| United States Treasury Note/Bond 4.5%, due Dec 31, 2031 | 0.77% | 0.19% | 0.19% |
| United States Treasury Note/Bond 3.875%, due Aug 31, 2032 | 0.88% | 0.17% | 0.17% |
| United States Treasury Note/Bond 4.125%, due Feb 29, 2032 | 0.80% | 0.14% | 0.14% |
| United States Treasury Note/Bond 4.125%, due Oct 31, 2031 | 0.20% | 0.14% | 0.14% |
| United States Treasury Note/Bond 4.25%, due May 31, 2033 | 0.93% | 0.14% | 0.14% |
| United States Treasury Note/Bond 4.125%, due Nov 15, 2032 | 1.74% | 0.14% | 0.14% |
| United States Treasury Note/Bond 3.875%, due Dec 31, 2032 | 0.73% | 0.14% | 0.14% |
| United States Treasury Note/Bond 3.75%, due Nov 30, 2032 | 0.97% | 0.14% | 0.14% |
| United States Treasury Note/Bond 4%, due Jul 31, 2032 | 0.75% | 0.14% | 0.14% |
| United States Treasury Note/Bond 4.25%, due Mar 31, 2033 | 0.70% | 0.13% | 0.13% |
| United States Treasury Note/Bond 4.125%, due Nov 30, 2031 | 0.77% | 0.13% | 0.13% |
| United States Treasury Note/Bond 4.25%, due Jun 30, 2033 | 0.25% | 0.13% | 0.13% |
| United States Treasury Note/Bond 3.75%, due Oct 31, 2032 | 0.73% | 0.13% | 0.13% |
| United States Treasury Note/Bond 3.75%, due Feb 28, 2033 | 1.23% | 0.12% | 0.12% |
| United States Treasury Note/Bond 4%, due Apr 30, 2032 | 0.75% | 0.12% | 0.12% |
| United States Treasury Note/Bond 3.875%, due Sep 30, 2032 | 0.74% | 0.12% | 0.12% |
| United States Treasury Note/Bond 4%, due Jan 31, 2033 | 0.57% | 0.12% | 0.12% |
| United States Treasury Note/Bond 4.125%, due Mar 31, 2032 | 0.76% | 0.11% | 0.11% |
| United States Treasury Note/Bond 4.125%, due Apr 30, 2033 | 0.49% | 0.11% | 0.11% |
| United States Treasury Note/Bond 4.375%, due Jan 31, 2032 | 0.81% | 0.11% | 0.11% |
| United States Treasury Note/Bond 4.375%, due Jul 31, 2033 | 0.33% | 0.10% | 0.10% |
| United States Treasury Note/Bond 4.125%, due May 31, 2032 | 0.97% | 0.09% | 0.09% |
| United States Treasury Note/Bond 5%, due Sep 30, 2031 | 0.07% | 0.23% | 0.07% |
| Federal Home Loan Mortgage Corp 6.25%, due Jul 15, 2032 | 0.08% | 0.04% | 0.04% |
| Amazon.com Inc 4.875%, due Mar 13, 2036 | 0.10% | 0.03% | 0.03% |
| Federal Home Loan Banks 4.75%, due Mar 10, 2034 | 0.03% | 0.04% | 0.03% |
| Alphabet Inc 4.7%, due Nov 15, 2035 | 0.06% | 0.03% | 0.03% |
| Anheuser-Busch Cos LLC / Anheuser-Busch InBev Worldwide Inc 4.7%, due Feb 1, 2036 | 0.10% | 0.03% | 0.03% |
| Aon North America Inc 5.45%, due Mar 1, 2034 | 0.03% | 0.03% | 0.03% |
| European Investment Bank 3.75%, due Feb 14, 2033 | 0.09% | 0.02% | 0.02% |
| International Bank for Reconstruction & Development 4%, due May 6, 2032 | 0.09% | 0.02% | 0.02% |
| Bank of America Corp 5.518%, due Oct 25, 2035 | 0.08% | 0.02% | 0.02% |
| Kreditanstalt fuer Wiederaufbau 4.375%, due Aug 15, 2033 | 0.11% | 0.02% | 0.02% |
| Alphabet Inc 4.8%, due Feb 15, 2036 | 0.07% | 0.02% | 0.02% |
| Ford Motor Credit Co LLC 6.467%, due May 22, 2036 | 0.02% | 0.02% | 0.02% |
| JPMorgan Chase & Co 2.963%, due Jan 25, 2033 | 0.06% | 0.02% | 0.02% |
| Bank of America Corp 5.464%, due May 9, 2036 | 0.02% | 0.02% | 0.02% |
| Alphabet Inc 4.4%, due Feb 15, 2033 | 0.05% | 0.02% | 0.02% |
| International Bank for Reconstruction & Development 4.5%, due May 20, 2036 | 0.06% | 0.02% | 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.