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
148 holdings in all 2 funds| Fund | IUSB | SCCR | Positions | Holdings |
|---|---|---|---|---|
| IUSBiShares Trust iShares Core Universal USD Bond ETF | — | 3% 148 shared |
18,254 | as of Oct 20, 2026issuer data |
| SCCRSchwab Core Bond ETF | 3% 148 shared | — | 548 | as of Jun 30, 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
3.0% common weight| Holding | IUSB | SCCR | Smallest |
|---|---|---|---|
| TREASURY NOTE 3.5%, due Mar 15, 2029 | 0.21% | 1.58% | 0.21% |
| TREASURY NOTE 3.5%, due Feb 28, 2031 | 0.21% | 1.56% | 0.21% |
| TREASURY NOTE 3.88%, due Apr 30, 2031 | 0.20% | 2.22% | 0.20% |
| TREASURY NOTE 3.5%, due Jan 15, 2029 | 0.19% | 1.30% | 0.19% |
| TREASURY BOND 4.63%, due Feb 15, 2055 | 0.17% | 1.40% | 0.17% |
| TREASURY BOND 4.75%, due May 15, 2055 | 0.15% | 1.30% | 0.15% |
| TREASURY BOND 2%, due Aug 15, 2051 | 0.13% | 0.67% | 0.13% |
| TREASURY NOTE 3.88%, due Apr 15, 2029 | 0.12% | 1.63% | 0.12% |
| TREASURY BOND (2OLD), due Feb 15, 2046 | 0.12% | 0.95% | 0.12% |
| TREASURY NOTE 3.38%, due Feb 29, 2028 | 0.10% | 2.31% | 0.10% |
| TREASURY NOTE 3.38%, due Dec 31, 2027 | 0.10% | 1.50% | 0.10% |
| FHLMC 30YR UMBS SUPER, due Mar 1, 2052 | 0.07% | 0.14% | 0.07% |
| GNMA2 30YR, due Mar 20, 2052 | 0.05% | 0.12% | 0.05% |
| GNMA2 30YR, due Oct 20, 2051 | 0.05% | 0.09% | 0.05% |
| GNMA2 30YR, due Sep 20, 2052 | 0.04% | 0.28% | 0.04% |
| FNMA 30YR UMBS, due Dec 1, 2051 | 0.06% | 0.04% | 0.04% |
| FNMA 15YR UMBS, due Mar 1, 2037 | 0.04% | 0.22% | 0.04% |
| GNMA2 30YR, due Aug 20, 2052 | 0.04% | 0.30% | 0.04% |
| FHLMC 30YR UMBS SUPER, due May 1, 2053 | 0.03% | 0.04% | 0.03% |
| FNMA 30YR UMBS, due Oct 1, 2054 | 0.03% | 0.77% | 0.03% |
| FNMA 30YR UMBS SUPER, due Oct 1, 2052 | 0.04% | 0.03% | 0.03% |
| FNMA 15YR UMBS, due Jan 1, 2037 | 0.03% | 0.03% | 0.03% |
| GNMA2 30YR, due Feb 20, 2052 | 0.03% | 0.04% | 0.03% |
| GNMA2 30YR, due Oct 20, 2052 | 0.02% | 0.06% | 0.02% |
| FNMA 30YR UMBS, due Nov 1, 2051 | 0.02% | 0.04% | 0.02% |
| FHLMC 30YR UMBS SUPER, due May 1, 2051 | 0.02% | 0.24% | 0.02% |
| GNMA2 30YR, due Apr 20, 2053 | 0.02% | 0.02% | 0.02% |
| FNMA 30YR UMBS, due Sep 1, 2052 | 0.02% | 0.46% | 0.02% |
| FNMA 30YR UMBS, due May 1, 2052 | 0.02% | 0.44% | 0.02% |
| GNMA2 30YR, due May 20, 2052 | 0.02% | 0.26% | 0.02% |
| GNMA2 30YR, due Feb 20, 2052 | 0.02% | 0.03% | 0.02% |
| ILLINOIS ST 5.1%, due Jun 1, 2033 | 0.02% | 0.15% | 0.02% |
| GNMA2 30YR, due Dec 20, 2052 | 0.01% | 0.55% | 0.01% |
| GNMA2 30YR, due Jun 20, 2053 | 0.01% | 0.39% | 0.01% |
| FNMA 30YR UMBS, due Jul 1, 2050 | 0.01% | 0.09% | 0.01% |
| GNMA2 30YR, due Dec 20, 2051 | 0.01% | 0.27% | 0.01% |
| PFIZER INVESTMENT ENTERPRISES PTE 5.3%, due May 19, 2053 | 0.01% | 0.64% | 0.01% |
| BOEING CO 5.8%, due May 1, 2050 | 0.01% | 0.46% | 0.01% |
| FNMA 30YR UMBS, due Feb 1, 2054 | 0.01% | 0.04% | 0.01% |
| AMAZON.COM INC 4.88%, due Mar 13, 2036 | 0.01% | 0.27% | 0.01% |
| FNMA 30YR UMBS SUPER, due Jan 1, 2052 | 0.01% | 0.18% | 0.01% |
| BANK OF AMERICA CORP MTN 5.47%, due Jan 23, 2035 | 0.01% | 0.54% | 0.01% |
| FNMA 30YR UMBS, due Aug 1, 2052 | 0.01% | 0.08% | 0.01% |
| GNMA2 30YR, due Jan 20, 2053 | 0.02% | 0.01% | 0.01% |
| CVS HEALTH CORP 4.3%, due Mar 25, 2028 | 0.01% | 0.43% | 0.01% |
| FNMA 30YR UMBS, due Aug 1, 2054 | 0.01% | 0.04% | 0.01% |
| META PLATFORMS INC 5.75%, due Nov 15, 2065 | 0.01% | 0.21% | 0.01% |
| AT&T INC 3.55%, due Sep 15, 2055 | 0.01% | 0.41% | 0.01% |
| FHLMC 30YR UMBS SUPER, due Feb 1, 2053 | 0.01% | 0.06% | 0.01% |
| MORGAN STANLEY MTN 5.59%, due Jan 18, 2036 | 0.01% | 0.42% | 0.01% |
| ABBVIE INC 4.05%, due Nov 21, 2039 | 0.01% | 0.45% | 0.01% |
| FNMA 30YR UMBS, due Apr 1, 2051 | 0.01% | 0.15% | 0.01% |
| FHLMC 30YR UMBS SUPER, due Dec 1, 2052 | 0.01% | 0.32% | 0.01% |
| MORGAN STANLEY MTN 5.12%, due Feb 1, 2029 | 0.01% | 0.72% | 0.01% |
| FHLMC 30YR UMBS SUPER, due Dec 1, 2054 | 0.01% | 0.60% | 0.01% |
| CITIGROUP INC 5.17%, due Feb 13, 2030 | 0.01% | 0.70% | 0.01% |
| GNMA2 30YR, due Aug 20, 2054 | 0.01% | 0.15% | 0.01% |
| FISERV INC 3.5%, due Jul 1, 2029 | 0.01% | 0.17% | 0.01% |
| WELLS FARGO & COMPANY MTN 3.07%, due Apr 30, 2041 | 0.01% | 0.49% | 0.01% |
| QTS FAYETTEVILLE I DC1-2 LLC 144A, due Apr 15, 2036 | 0.01% | 0.43% | 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.