{"url":"https://etfiq.com/compare/themes/bbp-vs-xbi","section":"compare","title":"BBP vs XBI: which is really different? | ETFIQ","description":"10.5% of BBP and 12.7% of XBI is already in the S&P 500 by weight, as filed, and 47% of the two books are the same names at the same weight.","as_of":"Oct 9, 2026","structured_data":[{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Do BBP and XBI hold the same stocks?","acceptedAnswer":{"@type":"Answer","text":"By their latest filings, 47% of their books are the same securities at the same weight, which is a meaningful overlap. Overlap is the sum of the smaller weight of every security they share."}},{"@type":"Question","name":"Which is more different from the S&P 500, BBP or XBI?","acceptedAnswer":{"@type":"Answer","text":"BBP has 10% of its weight in S&P 500 names and XBI has 13%, so BBP differs more from the index."}},{"@type":"Question","name":"Which is cheaper, BBP or XBI?","acceptedAnswer":{"@type":"Answer","text":"BBP charges 0.34% a year and XBI charges 0.35%, so BBP is cheaper. Fees come from each fund's prospectus."}}]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Thematic ETFs","item":"https://etfiq.com/themes/"},{"@type":"ListItem","position":3,"name":"BBP vs XBI","item":"https://etfiq.com/compare/themes/bbp-vs-xbi"}]},{"@type":"WebPage","name":"BBP vs XBI: which is really different?","description":"10.5% of BBP and 12.7% of XBI is already in the S&P 500 by weight, as filed, and 47% of the two books are the same names at the same weight.","url":"https://etfiq.com/compare/themes/bbp-vs-xbi","dateModified":"2026-10-10","abstract":"BBP and XBI hold 47% of their weight in the same names.","publisher":{"@id":"https://etfiq.com/#org"},"isPartOf":{"@id":"https://etfiq.com/#website"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".verdict",".faq"]}},{"@type":"Dataset","name":"ETFIQ comparison of BBP and XBI","description":"10.5% of BBP and 12.7% of XBI is already in the S&P 500 by weight, as filed, and 47% of the two books are the same names at the same weight.","dateModified":"2026-10-10","creator":{"@id":"https://etfiq.com/#org"},"isAccessibleForFree":true,"url":"https://etfiq.com/compare/themes/bbp-vs-xbi","license":"https://etfiq.com/license/","publisher":{"@id":"https://etfiq.com/#org"},"inLanguage":"en","creativeWorkStatus":"Published","distribution":[{"@type":"DataDownload","encodingFormat":"application/json","contentUrl":"https://etfiq.com/data/thematic.json"}],"variableMeasured":["Weight overlap with the S&P 500","Active share","Holdings","Top ten share of the fund","Total return","Fee for the differing part","Expense ratio"],"keywords":["exchange-traded funds","ETF","Thematic ETFs","fund data","SEC filings"]}],"characters":7500,"truncated":true,"content":"ETFIQ / Thematic ETFs / Head to head / BBP vs XBI \n ETFIQ etfiq.com \u00b7 independent ETF data \n\n Data as of Oct 9, 2026 .\n\n BBP vs XBI: which is really different?\n\n BBP and XBI hold 47% of their weight in the same names.\n Copy this for sharing \n \n BBP costs 0.01 points a year less; their one-year returns differ by 0.2 points; XBI is far larger, $9.9bn against $99m.\n BBP and XBI at a glance. As of Oct 9, 2026. Source: ETFIQ. BBP XBI \n Expense ratio 0.34% 0.35% \n Net assets, BBP as of Jul 31, 2026 and XBI as of Oct 8, 2026 $99m $9.9bn \n Total return, 1 year +45.2% +45.0% \n What it tracks Biotech Bi","source":"ETFIQ, independent ETF data. Recomputed nightly from public filings and prices.","publisher":{"@id":"https://etfiq.com/#org","name":"ETFIQ","url":"https://etfiq.com"},"license":"https://etfiq.com/license/","license_text":"Figures ETFIQ computes are free to use with attribution: ETFIQ (etfiq.com). Issuer data stays under its owner's terms.","citation":"ETFIQ, BBP against XBI, data as of Oct 9, 2026. https://etfiq.com/compare/themes/bbp-vs-xbi","a":{"ticker":"BBP","name":"Virtus Biotech ETF","issuer":"Virtus","desk":"themes","as_of":"2026-10-09","verdict":"BBP holds 67 stocks, and 90% of its weight is outside the S&P 500.","url":"https://etfiq.com/funds/bbp","key_facts":[{"label":"Already in the S&P 500","value":"10.5%","as_of":"2026-10-09","source":null},{"label":"Active share vs the S&P 500","value":"99.0%","as_of":"2026-10-09","source":null},{"label":"Top ten holdings","value":"19.6%","as_of":"2026-10-09","source":null},{"label":"Total return, 1 year","value":"+45.2%","as_of":"2026-10-09","source":null},{"label":"Net assets","value":"$99m","as_of":"2026-10-09","source":"SEC filing, whole fund, as filed for Jul 31, 2026"},{"label":"Expense ratio","value":"0.34%","as_of":"2026-10-09","source":"485BPOS XBRL, Feb 27, 2026"}]},"b":{"ticker":"XBI","name":"State Street(R) SPDR(R) S&P(R) Biotech ETF","issuer":"State Street","desk":"themes","as_of":"2026-10-09","verdict":"XBI holds 165 stocks, and 87% of its weight is outside the S&P 500.","url":"https://etfiq.com/funds/xbi","key_facts":[{"label":"Already in the S&P 500","value":"12.7%","as_of":"2026-10-09","source":null},{"label":"Active share vs the S&P 500","value":"98.4%","as_of":"2026-10-09","source":null},{"label":"Top ten holdings","value":"16.9%","as_of":"2026-10-09","source":null},{"label":"Total return, 1 year","value":"+45.0%","as_of":"2026-10-09","source":null},{"label":"Net assets","value":"$9.9bn","as_of":"2026-10-09","source":"the issuer\u2019s own daily fund list, as of Oct 8, 2026"},{"label":"Expense ratio","value":"0.35%","as_of":"2026-10-09","source":"485BPOS XBRL, Oct 24, 2025"}]},"overlap_pct":47,"full_text_at":"https://etfiq.com/compare/themes/bbp-vs-xbi"}