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
53 holdings in all 2 funds| Fund | BSV | SDSI | Positions | Holdings |
|---|---|---|---|---|
| BSVVanguard Short-Term Bond ETF | — | 3% 53 shared |
3,155 | as of Sep 30, 2026issuer data |
| SDSIAmerican Century Short Duration Strategic Income ETF | 3% 53 shared | — | 381 | 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
3.3% common weight| Holding | BSV | SDSI | Smallest |
|---|---|---|---|
| United States Treasury Note/Bond 4.375%, due Dec 31, 2029 | 0.71% | 2.31% | 0.71% |
| United States Treasury Note/Bond 4%, due May 31, 2028 | 0.63% | 10.63% | 0.63% |
| United States Treasury Note/Bond 3.75%, due Dec 31, 2028 | 0.48% | 3.42% | 0.48% |
| United States Treasury Note/Bond 3.875%, due Apr 30, 2031 | 0.53% | 0.47% | 0.47% |
| United States Treasury Note/Bond 3.875%, due May 15, 2029 | 0.46% | 3.65% | 0.46% |
| Boeing Co/The 6.298%, due May 1, 2029 | 0.04% | 0.37% | 0.04% |
| Morgan Stanley Private Bank NA 4.734%, due Jul 18, 2031 | 0.04% | 0.15% | 0.04% |
| Oracle Corp 4.95%, due Feb 4, 2031 | 0.04% | 0.21% | 0.04% |
| Bank of America Corp 4.477%, due Apr 23, 2030 | 0.03% | 0.11% | 0.03% |
| Salesforce Inc 4.5%, due Mar 15, 2028 | 0.03% | 0.25% | 0.03% |
| Amazon.com Inc 4.25%, due Mar 13, 2031 | 0.03% | 0.08% | 0.03% |
| Goldman Sachs Group Inc/The 4.516%, due Jan 21, 2032 | 0.02% | 0.28% | 0.02% |
| Morgan Stanley 4.133%, due Oct 18, 2029 | 0.02% | 0.45% | 0.02% |
| Blackstone Private Credit Fund 5.95%, due Jul 16, 2029 | 0.02% | 0.23% | 0.02% |
| Wells Fargo & Co 4.577%, due May 20, 2029 | 0.02% | 0.35% | 0.02% |
| Amazon.com Inc 4%, due Mar 13, 2029 | 0.02% | 0.28% | 0.02% |
| AppLovin Corp 5.125%, due Dec 1, 2029 | 0.01% | 0.32% | 0.01% |
| Morgan Stanley Bank NA 4.788%, due May 10, 2030 | 0.01% | 0.12% | 0.01% |
| Salesforce Inc 4.65%, due Mar 15, 2029 | 0.01% | 0.14% | 0.01% |
| Westpac Banking Corp 2.668%, due Nov 15, 2035 | 0.01% | 0.38% | 0.01% |
| Regions Bank/Birmingham AL 4.755%, due Jul 27, 2029 | 0.01% | 0.30% | 0.01% |
| Charles Schwab Corp/The 4.744%, due May 21, 2030 | 0.01% | 0.25% | 0.01% |
| Golub Capital BDC Inc 7.05%, due Dec 5, 2028 | 0.01% | 0.16% | 0.01% |
| Expand Energy Corp 5.375%, due Mar 15, 2030 | 0.01% | 0.51% | 0.01% |
| Crown Castle Inc 4.8%, due Sep 1, 2028 | 0.01% | 0.26% | 0.01% |
| Equinix Asia Financing Corp Pte Ltd 4.4%, due Mar 15, 2031 | 0.01% | 0.19% | 0.01% |
| Huntington Bancshares Inc/OH 4.623%, due Jan 28, 2032 | 0.01% | 0.18% | 0.01% |
| Hydro One Inc 4.75%, due May 30, 2031 | 0.01% | 0.05% | 0.01% |
| FNB Corp/PA 5.722%, due Dec 11, 2030 | 0.01% | 0.21% | 0.01% |
| Ares Strategic Income Fund 5.7%, due Mar 15, 2028 | 0.01% | 0.18% | 0.01% |
| PayPal Holdings Inc 4.55%, due Jun 1, 2028 | 0.01% | 0.20% | 0.01% |
| HPS Corporate Lending Fund 4.9%, due Sep 11, 2028 | 0.01% | 0.04% | 0.01% |
| Targa Resources Corp 4.35%, due Jan 15, 2029 | 0.01% | 0.48% | 0.01% |
| Deutsche Bank AG/New York NY 4.875%, due Dec 1, 2032 | 0.01% | 0.40% | 0.01% |
| HPS Corporate Lending Fund 5.45%, due Jan 14, 2028 | 0.01% | 0.25% | 0.01% |
| ServiceNow Inc 4.25%, due May 15, 2028 | 0.01% | 0.20% | 0.01% |
| Fedex Freight Holding Co Inc 4.65%, due Mar 15, 2031 | 0.01% | 0.27% | 0.01% |
| Piedmont Operating Partnership LP 6.875%, due Jul 15, 2029 | 0.01% | 0.32% | 0.01% |
| Crown Castle Inc 4.9%, due Sep 1, 2029 | 0.01% | 0.37% | 0.01% |
| Oaktree Strategic Credit Fund 6.5%, due Jul 23, 2029 | 0.00% | 0.24% | 0.00% |
| ServiceNow Inc 4.7%, due Aug 15, 2031 | 0.00% | 0.20% | 0.00% |
| CMS Energy Corp 4.75%, due Jun 1, 2050 | 0.00% | 0.56% | 0.00% |
| Kilroy Realty LP 3.05%, due Feb 15, 2030 | 0.00% | 0.29% | 0.00% |
| Essent Group Ltd 6.25%, due Jul 1, 2029 | 0.00% | 0.41% | 0.00% |
| Baxter International Inc 4.45%, due Feb 15, 2029 | 0.00% | 0.32% | 0.00% |
| Equinor ASA 4.5%, due Sep 3, 2030 | 0.00% | 0.12% | 0.00% |
| Zions Bancorp NA 3.25%, due Oct 29, 2029 | 0.00% | 0.30% | 0.00% |
| Kilroy Realty LP 4.25%, due Aug 15, 2029 | 0.00% | 0.24% | 0.00% |
| Apollo Debt Solutions BDC 5.2%, due Dec 8, 2028 | 0.00% | 0.19% | 0.00% |
| Southern Co Gas Capital Corp 6.05%, due Sep 15, 2056 | 0.00% | 0.12% | 0.00% |
| Maple Parent Holdings Corp 4.75%, due Mar 26, 2029 | 0.00% | 0.17% | 0.00% |
| Bank of Montreal 3.803%, due Dec 15, 2032 | 0.00% | 0.37% | 0.00% |
| National Fuel Gas Co 4.75%, due May 15, 2029 | 0.00% | 0.30% | 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.