{"url":"https://etfiq.com/rankings/buffer-largest-on-bitcoin","section":"rankings","title":"The largest buffer ETFs on Bitcoin | ETFIQ","description":"The largest buffer ETFs on Bitcoin, ranked by net assets, as of Oct 1, 2026. 12 funds from ETFIQ\u2019s own published figures. A ranking is not a recommendation.","as_of":"Oct 1, 2026","structured_data":[{"@type":"ItemList","name":"The largest buffer ETFs on Bitcoin","numberOfItems":12,"itemListOrder":"https://schema.org/ItemListOrderDescending","itemListElement":[{"@type":"ListItem","position":1,"name":"CBTJ","url":"https://etfiq.com/funds/cbtj"},{"@type":"ListItem","position":2,"name":"CBTO","url":"https://etfiq.com/funds/cbto"},{"@type":"ListItem","position":3,"name":"CBXJ","url":"https://etfiq.com/funds/cbxj"},{"@type":"ListItem","position":4,"name":"CBOJ","url":"https://etfiq.com/funds/cboj"},{"@type":"ListItem","position":5,"name":"CBXO","url":"https://etfiq.com/funds/cbxo"},{"@type":"ListItem","position":6,"name":"CBOO","url":"https://etfiq.com/funds/cboo"},{"@type":"ListItem","position":7,"name":"CBTA","url":"https://etfiq.com/funds/cbta"},{"@type":"ListItem","position":8,"name":"CBXY","url":"https://etfiq.com/funds/cbxy"},{"@type":"ListItem","position":9,"name":"CBTY","url":"https://etfiq.com/funds/cbty"},{"@type":"ListItem","position":10,"name":"CBOY","url":"https://etfiq.com/funds/cboy"},{"@type":"ListItem","position":11,"name":"CBOA","url":"https://etfiq.com/funds/cboa"},{"@type":"ListItem","position":12,"name":"CBXA","url":"https://etfiq.com/funds/cbxa"}]},{"@type":"Dataset","name":"The largest buffer ETFs on Bitcoin","description":"The largest buffer ETFs on Bitcoin, ranked by net assets, as of Oct 1, 2026. 12 funds from ETFIQ\u2019s own published figures. A ranking is not a recommendation.","url":"https://etfiq.com/rankings/buffer-largest-on-bitcoin","dateModified":"2026-10-01","creator":{"@id":"https://etfiq.com/#org"},"license":"https://etfiq.com/license/","isAccessibleForFree":true,"creditText":"ETFIQ (etfiq.com)","publisher":{"@id":"https://etfiq.com/#org"},"inLanguage":"en","creativeWorkStatus":"Published","distribution":[{"@type":"DataDownload","encodingFormat":"application/json","contentUrl":"https://etfiq.com/data/funds.json"}],"variableMeasured":["Remaining cap","Fall before the buffer engages","Protection left in index points","Starting buffer","Outcome period","Reference index return","Fund return","Days remaining","Expense ratio"],"keywords":["exchange-traded funds","ETF","Buffer ETFs","fund data","SEC filings"]},{"@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"name":"ETFIQ","item":"https://etfiq.com/"},{"@type":"ListItem","position":2,"name":"Rankings","item":"https://etfiq.com/rankings/"},{"@type":"ListItem","position":3,"name":"The largest buffer ETFs on Bitcoin","item":"https://etfiq.com/rankings/buffer-largest-on-bitcoin"}]},{"@type":"WebPage","name":"The largest buffer ETFs on Bitcoin","description":"The largest buffer ETFs on Bitcoin, ranked by net assets, as of Oct 1, 2026. 12 funds from ETFIQ\u2019s own published figures. A ranking is not a recommendation.","url":"https://etfiq.com/rankings/buffer-largest-on-bitcoin","dateModified":"2026-10-01","isPartOf":{"@type":"WebSite","name":"ETFIQ","url":"https://etfiq.com"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".lede"]},"publisher":{"@id":"https://etfiq.com/#org"}}],"characters":3570,"truncated":false,"content":"ETFIQ / Rankings / The largest buffer ETFs on Bitcoin \n \n As of Oct 1, 2026 . Rebuilt every trading night.\n The largest buffer ETFs on Bitcoin\n Every fund here is struck on Bitcoin, used as the proxy for the CME CF Bitcoin Reference Rate, so the choice between them is the buffer, the cap and when the period ends.\n The largest buffer ETFs on Bitcoin, ranked by net assets, as of Oct 1, 2026. Source: ETFIQ. # Ticker Fund Net assets Buffer Period ends Source \n 1 CBTJ Calamos Bitcoin 80 Series Structured Alt $26m 20% to 100% Jan 30, 2027 Issuer page, Sep 30, 2026 \n 2 CBTO Calamos Bitcoin 80 Series Structured Alt $19m 21% to 100% Oct 7, 2026 Issuer page, Sep 30, 2026 \n 3 CBXJ Calamos Bitcoin 90 Series Structured Alt $19m 10% to 100% Jan 30, 2027 Issuer page, Sep 30, 2026 \n 4 CBOJ Calamos Bitcoin Structured Alt Protectio $16m 0% to 100% Jan 30, 2027 Issuer page, Sep 30, 2026 \n 5 CBXO Calamos Bitcoin 90 Series Structured Alt $7m 11% to 100% Oct 7, 2026 Issuer page, Sep 30, 2026 \n 6 CBOO Calamos Bitcoin Structured Alt Protectio $6m 1% to 100% Oct 7, 2026 Issuer page, Sep 30, 2026 \n 7 CBTA Calamos Bitcoin 80 Series Structured Alt $6m 20% to 100% May 1, 2027 Issuer page, Sep 30, 2026 \n 8 CBXY Calamos Bitcoin 90 Series Structured Alt $6m 10% to 100% Jul 31, 2027 Issuer page, Sep 30, 2026 \n 9 CBTY Calamos Bitcoin 80 Series Structured Alt $6m 20% to 100% Jul 31, 2027 Issuer page, Sep 30, 2026 \n 10 CBOY Calamos Bitcoin Structured Alt Protectio $5m 0% to 100% Jul 31, 2027 Issuer page, Sep 30, 2026 \n 11 CBOA Calamos Bitcoin Structured Alt Protectio $5m 0% to 100% May 1, 2027 Issuer page, Sep 30, 2026 \n 12 CBXA Calamos Bitcoin 90 Series Structured Alt $5m 10% to 100% May 1, 2027 Issuer page, Sep 30, 2026 \n \n Method\n The 12 buffer and floor ETFs ETFIQ measures on Bitcoin, used as the proxy for the CME CF Bitcoin Reference Rate, of which 12 publish net assets. Across the funds listed here the buffer each fund set out with runs from 79.4% to 99.9%. Size is not a measure of anything a fund did. It is where the money is. The ranking is the published field sorted, nothing else: no scoring, no weighting and no view on any fund. Every fund ETFIQ covers in this category is eligible, including funds that have closed, because leaving them out would flatter the category.\n Where to next\n Every buffer ETF Buffer ETFs with the most protection left Where these figures came from\n Innovator, AllianzIM and FT Vest publish each fund\u2019s current outcome-period values daily SEC EDGAR, full-text search of fund filings SEC Form N-PORT, what a fund filed it holds Rule 19a-1, what a distribution notice must say ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.\n A ranking is not a recommendation and no order on this site is an opinion. ETFIQ is an independent publisher, not an adviser. Standards and sources \n Cite this page. ETFIQ, The largest buffer ETFs on Bitcoin, ranked by net assets, data as of Oct 1, 2026. https://etfiq.com/rankings/buffer-largest-on-bitcoin Free to use with attribution ; the underlying files are at Open data .\n Other forms Plain ETFIQ, The largest buffer ETFs on Bitcoin, ranked by net assets, data as of Oct 1, 2026. https://etfiq.com/rankings/buffer-largest-on-bitcoin APA ETFIQ. (Oct 1, 2026). The largest buffer ETFs on Bitcoin, ranked by net assets. Retrieved from https://etfiq.com/rankings/buffer-largest-on-bitcoin Markdown [The largest buffer ETFs on Bitcoin, ranked by net assets (ETFIQ, Oct 1, 2026)](https://etfiq.com/rankings/buffer-largest-on-bitcoin)","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/","citation":"ETFIQ, as of Oct 1, 2026. https://etfiq.com/rankings/buffer-largest-on-bitcoin"}