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
264 holdings in all 2 funds| Fund | IUSB | TMB | Positions | Holdings |
|---|---|---|---|---|
| IUSBiShares Trust iShares Core Universal USD Bond ETF | — | 3% 264 shared |
18,254 | as of Oct 20, 2026issuer data |
| TMBThornburg Multi Sector Bond ETF | 3% 264 shared | — | 554 | 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
3.2% common weight| Holding | IUSB | TMB | Smallest |
|---|---|---|---|
| TREASURY NOTE 4.63%, due Feb 15, 2035 | 0.50% | 1.62% | 0.50% |
| TREASURY NOTE (2OLD), due Feb 15, 2036 | 0.36% | 4.49% | 0.36% |
| TREASURY NOTE (OLD) 4.38%, due May 15, 2036 | 0.33% | 3.67% | 0.33% |
| TREASURY NOTE 4.25%, due Nov 15, 2034 | 0.33% | 0.32% | 0.32% |
| TREASURY NOTE 3.88%, due Apr 30, 2031 | 0.20% | 1.09% | 0.20% |
| TREASURY NOTE 1.75%, due Jan 31, 2029 | 0.17% | 0.16% | 0.16% |
| TREASURY BOND 1.75%, due Aug 15, 2041 | 0.15% | 0.44% | 0.15% |
| TREASURY BOND 1.88%, due Nov 15, 2051 | 0.14% | 0.16% | 0.14% |
| TREASURY BOND 4.75%, due Feb 15, 2045 | 0.12% | 0.56% | 0.12% |
| TREASURY NOTE 3.75%, due Feb 28, 2033 | 0.11% | 3.94% | 0.11% |
| TREASURY NOTE 4%, due Jun 30, 2032 | 0.11% | 0.08% | 0.08% |
| TREASURY BOND 2.5%, due Feb 15, 2045 | 0.06% | 0.12% | 0.06% |
| TREASURY BOND 2.75%, due Nov 15, 2042 | 0.03% | 0.26% | 0.03% |
| GNMA2 30YR, due Nov 20, 2051 | 0.03% | 0.26% | 0.03% |
| GNMA2 30YR, due Jun 20, 2052 | 0.02% | 0.54% | 0.02% |
| TREASURY BOND 3%, due May 15, 2045 | 0.02% | 1.02% | 0.02% |
| PETROLEOS MEXICANOS 5.95%, due Jan 28, 2031 | 0.01% | 0.15% | 0.01% |
| CENTENE CORPORATION 4.63%, due Dec 15, 2029 | 0.01% | 0.16% | 0.01% |
| CCO HOLDINGS LLC 144A, due Feb 1, 2031 | 0.01% | 0.17% | 0.01% |
| FHLMC 30YR UMBS SUPER, due Dec 1, 2054 | 0.01% | 0.52% | 0.01% |
| AMAZON.COM INC 4.55%, due Mar 13, 2033 | 0.01% | 0.20% | 0.01% |
| FNMA 30YR UMBS, due Aug 1, 2051 | 0.01% | 1.34% | 0.01% |
| TENET HEALTHCARE CORP 6.13%, due Jun 15, 2030 | 0.01% | 0.13% | 0.01% |
| MORGAN STANLEY BANK NA (FXD-FRN) 5.02%, due Jan 12, 2029 | 0.01% | 0.14% | 0.01% |
| ALPHABET INC 3.7%, due Feb 15, 2029 | 0.01% | 0.08% | 0.01% |
| FIDELITY NATIONAL INFORMATION SERV 4.55%, due Mar 10, 2029 | 0.01% | 0.14% | 0.01% |
| AVANTOR FUNDING INC 144A, due Jul 15, 2028 | 0.01% | 0.27% | 0.01% |
| ALPHABET INC 4.1%, due Feb 15, 2031 | 0.01% | 0.08% | 0.01% |
| DTE ENERGY COMPANY 4.88%, due Jun 1, 2028 | 0.01% | 0.03% | 0.01% |
| AON NORTH AMERICA INC 5.45%, due Mar 1, 2034 | 0.01% | 0.22% | 0.01% |
| FAIR ISAAC CORP 144A, due May 15, 2033 | 0.01% | 0.05% | 0.01% |
| ORANGE SA MTN 144A, due Jan 13, 2033 | 0.01% | 0.29% | 0.01% |
| CITIGROUP INC (FXD-FRN) 4.95%, due May 7, 2031 | 0.01% | 0.15% | 0.01% |
| HEWLETT PACKARD ENTERPRISE CO 4.15%, due Sep 15, 2028 | 0.01% | 0.18% | 0.01% |
| US BANCORP MTN 5.1%, due Jul 23, 2030 | 0.01% | 0.11% | 0.01% |
| POST HOLDINGS INC 144A, due Mar 1, 2033 | 0.01% | 0.18% | 0.01% |
| LSEG US FIN CORP 144A, due Mar 23, 2029 | 0.01% | 0.16% | 0.01% |
| ECOPETROL SA 7.75%, due Feb 1, 2032 | 0.01% | 0.16% | 0.01% |
| BARCLAYS PLC (FXD TO FLOAT) 4.48%, due Nov 11, 2029 | 0.00% | 0.14% | 0.00% |
| TENET HEALTHCARE CORP 6.75%, due May 15, 2031 | 0.00% | 0.10% | 0.00% |
| ALTRIA GROUP INC 2.45%, due Feb 4, 2032 | 0.00% | 0.19% | 0.00% |
| NEWS CORP 144A, due May 15, 2029 | 0.00% | 0.17% | 0.00% |
| HUMANA INC 5.38%, due Apr 15, 2031 | 0.00% | 0.14% | 0.00% |
| PAYCHEX INC 5.35%, due Apr 15, 2032 | 0.00% | 0.14% | 0.00% |
| T-MOBILE USA INC 2.25%, due Nov 15, 2031 | 0.00% | 0.12% | 0.00% |
| NEW YORK LIFE GLOBAL FUNDING MTN 144A, due Jan 28, 2033 | 0.00% | 0.23% | 0.00% |
| LPL HOLDINGS INC 144A, due Nov 15, 2027 | 0.00% | 0.30% | 0.00% |
| POST HOLDINGS INC 144A, due Mar 15, 2036 | 0.00% | 0.06% | 0.00% |
| BAXTER INTERNATIONAL INC 4.9%, due Dec 15, 2030 | 0.00% | 0.17% | 0.00% |
| CONAGRA BRANDS INC 4.85%, due Nov 1, 2028 | 0.00% | 0.22% | 0.00% |
| LINCOLN NATIONAL CORPORATION 5.35%, due Nov 15, 2035 | 0.00% | 0.22% | 0.00% |
| CCO HOLDINGS LLC 144A, due Feb 1, 2033 | 0.00% | 0.09% | 0.00% |
| AMERICAN TOWER CORPORATION 4.9%, due Mar 15, 2030 | 0.00% | 0.12% | 0.00% |
| TRIMBLE INC 4.9%, due Jun 15, 2028 | 0.00% | 0.14% | 0.00% |
| CENTENE CORPORATION 2.63%, due Aug 1, 2031 | 0.00% | 0.08% | 0.00% |
| DOMINION ENERGY INC 4.6%, due May 15, 2028 | 0.00% | 0.07% | 0.00% |
| CROWN CASTLE INC 4.9%, due Sep 1, 2029 | 0.00% | 0.23% | 0.00% |
| BALL CORPORATION 6%, due Jun 15, 2029 | 0.00% | 0.07% | 0.00% |
| EVERSOURCE ENERGY 5.45%, due Mar 1, 2028 | 0.00% | 0.10% | 0.00% |
| BAT CAPITAL CORP 5.83%, due Feb 20, 2031 | 0.00% | 0.10% | 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.