Data as of Sep 12, 2026. Both funds on the fields they both publish, from the same sources.
CPSM vs SPLG: how they differ
CPSM and SPLG are funds of different kinds, on the fields both publish.
Calamos S&P 500 ® Structured Alt Protection ETF - May and S&P 500, book from IVV.
| CPSM Calamos S&P 500 ® Structured Alt Protection ETF - May | SPLG S&P 500, book from IVV | |
|---|---|---|
| Where it sits | Buffer ETF | Core index fund |
| Issuer | Calamos | S&P |
| What it is | Defined outcome, 0% to 100% on SPY | S&P 500, book from IVV |
| Total return, 1 year | not published | +17.6% |
| S&P 500 over the same days | not published | +17.5% |
| Gap to the S&P 500 | not available | +0.1 pts |
| Expense ratio | 0.69% | not published |
CPSM in plain words
The fund's price can fall 1.9% from here before the buffer starts absorbing losses, by the issuer's figure. In index terms, SPY can fall 5.9% from today's level to the point where the buffer begins. Protection left, in index points: 99.8% of the 99.8% buffer still sits below today's SPY level. 231 days remained on Sep 12, 2026. On May 1, 2027 the period ends and a new cap is set.
SPLG in plain words
SPLG is an index equity fund tracking the S&P 500. Over the year to Sep 11, 2026 it returned +17.6% with distributions reinvested, against +17.5% for the S&P 500 and +23.0% for the Nasdaq-100.
Questions people ask
- Are CPSM and SPLG the same kind of fund?
- No. CPSM is a buffer ETF and SPLG is an index ETF, so they are built for different jobs. The table compares what both publish: return, cost and what each actually holds.
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Where these figures came from
ETFIQ links to the documents behind every figure. It is not affiliated with any issuer, and a link is not an endorsement.
Cite this page. ETFIQ, CPSM against SPLG, data as of Sep 12, 2026. https://etfiq.com/compare/any/CPSM-SPLG Free to use with attribution; the underlying files are at Open data.
A comparison is not a recommendation. Standards and sources