{"url":"https://etfiq.com/compare/buffer/cpso-vs-sepm","section":"compare","title":"CPSO vs SEPM: Cap, Buffer & Days Left | ETFIQ","description":"As of Oct 22, 2026 CPSO can fall 0.5% and SEPM 1.3% before its buffer engages, on SPY. CPSO ends on Sep 30, 2027 and SEPM on Sep 17, 2027.","as_of":"Oct 22, 2026","structured_data":[{"@type":"FAQPage","mainEntity":[{"@type":"Question","name":"Which resets first, CPSO or SEPM?","acceptedAnswer":{"@type":"Answer","text":"CPSO ends its outcome period on Sep 30, 2027 and SEPM on Sep 17, 2027. A new cap is set the day after each."}},{"@type":"Question","name":"Which is cheaper, CPSO or SEPM?","acceptedAnswer":{"@type":"Answer","text":"CPSO charges 0.69% a year and SEPM charges 0.85%, so CPSO 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":"Buffer ETFs","item":"https://etfiq.com/buffer/"},{"@type":"ListItem","position":3,"name":"Compare ETFs","item":"https://etfiq.com/compare/"},{"@type":"ListItem","position":4,"name":"CPSO vs SEPM","item":"https://etfiq.com/compare/buffer/cpso-vs-sepm"}]},{"@type":"WebPage","name":"CPSO vs SEPM: Cap, Buffer & Days Left","description":"As of Oct 22, 2026 CPSO can fall 0.5% and SEPM 1.3% before its buffer engages, on SPY. CPSO ends on Sep 30, 2027 and SEPM on Sep 17, 2027.","url":"https://etfiq.com/compare/buffer/cpso-vs-sepm","dateModified":"2026-10-22","abstract":"As of Oct 22, 2026 SEPM can fall 1.3% before its buffer engages and CPSO 0.5%, and SEPM resets 13 days sooner.","publisher":{"@id":"https://etfiq.com/#org"},"isPartOf":{"@id":"https://etfiq.com/#website"},"speakable":{"@type":"SpeakableSpecification","cssSelector":[".verdict",".faq"]}},{"@type":"Dataset","name":"ETFIQ comparison of CPSO and SEPM","description":"As of Oct 22, 2026 CPSO can fall 0.5% and SEPM 1.3% before its buffer engages, on SPY. CPSO ends on Sep 30, 2027 and SEPM on Sep 17, 2027.","dateModified":"2026-10-22","creator":{"@id":"https://etfiq.com/#org"},"isAccessibleForFree":true,"url":"https://etfiq.com/compare/buffer/cpso-vs-sepm","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/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"]}],"characters":5592,"truncated":true,"content":"ETFIQ / Buffer ETFs / Compare ETFs / CPSO vs SEPM \n ETFIQ etfiq.com \u00b7 independent ETF data \n\n Data as of Oct 22, 2026 .\n\n CPSO vs SEPM: Cap, Buffer & Days Left\n\n As of Oct 22, 2026 SEPM can fall 1.3% before its buffer engages and CPSO 0.5%, and SEPM resets 13 days sooner.\n Copy this for sharing \n \n CPSO costs 0.16 points a year less; their one-year returns differ by 0.3 points; SEPM is 1.2 times larger.\n CPSO and SEPM at a glance. As of Oct 22, 2026. Source: ETFIQ. CPSO SEPM \n Expense ratio 0.69% 0.85% \n Net assets $31m $38m \n Total return, 1 year +6.0% +6.3% \n What it tracks SPY SPY \n Holding","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, CPSO against SEPM, data as of Oct 22, 2026. https://etfiq.com/compare/buffer/cpso-vs-sepm","a":{"ticker":"CPSO","name":"Calamos S&P 500 Structured Alt Protection ETF - October","issuer":"Calamos","desk":"buffer","as_of":"2026-10-22","verdict":"Since Oct 1, 2026, CPSO returned 0.5%, against 0.0% for SPY. 100.0% of its 100.0% buffer is left.","url":"https://etfiq.com/funds/cpso","key_facts":[{"label":"Fall before the buffer from today\u2019s fund price","value":"0.5%","as_of":"2026-10-22","source":null},{"label":"Protection left, index points","value":"100.0%","as_of":"2026-10-22","source":null},{"label":"Days to reset","value":"343","as_of":"2026-10-22","source":null},{"label":"Net assets","value":"$31m","as_of":"2026-10-22","source":"issuer page, as of Oct 22, 2026"},{"label":"Expense ratio","value":"0.69%","as_of":"2026-10-22","source":"issuer page, Oct 22, 2026"},{"label":"Reference index","value":"SPY","as_of":"2026-10-22","source":null}]},"b":{"ticker":"SEPM","name":"FT Vest U.S. Equity Max Buffer ETF - September","issuer":"First Trust","desk":"buffer","as_of":"2026-10-22","verdict":"Since Sep 21, 2026, SEPM returned 0.4%, against 0.3% for SPY. It can gain 7.0% more before its cap.","url":"https://etfiq.com/funds/sepm","key_facts":[{"label":"Can still gain from today\u2019s fund price","value":"7.0%","as_of":"2026-10-22","source":null},{"label":"Fall before the buffer from today\u2019s fund price","value":"1.3%","as_of":"2026-10-22","source":null},{"label":"Protection left, index points","value":"100.0%","as_of":"2026-10-22","source":null},{"label":"Days to reset","value":"330","as_of":"2026-10-22","source":null},{"label":"Net assets","value":"$38m","as_of":"2026-10-22","source":"issuer page, as of Oct 22, 2026"},{"label":"Expense ratio","value":"0.85%","as_of":"2026-10-22","source":"issuer page, Oct 22, 2026"}]},"overlap_pct":null,"overlap_note":"ETFIQ does not publish a holdings overlap for this pair. Either the funds are not compared on holdings, or one book is incomplete.","full_text_at":"https://etfiq.com/compare/buffer/cpso-vs-sepm"}