Calamos S&P 500 Structured Alt Protection ETF - September (CPST)
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Performance as of Oct. 2, 2026
| Period | Price return | Total return |
|---|---|---|
| 1M | ▲ +0.27% | · |
| 3M | · | · |
| 6M | · | · |
| YTD | · | · |
| 1Y | · | · |
| 3Y | · | · |
| 5Y | · | · |
| Max | ▲ +0.43% | · |
Total return is shown once dividend history for this fund has been collected — price return alone would duplicate it misleadingly. Returns are not benchmarked against an index. * Sharpe ratio is computed with a 0% risk-free rate.
Fund flows (SEC-reported)
Based on the fund's own SEC Form N-PORT monthly flow disclosures (Item C.9 "Flow Information") — sales minus redemptions, reinvested distributions excluded. This is a different, independent metric from the "Net flows" estimate above (which is derived from daily shares-outstanding changes). SEC N-PORT filing lag is up to ~60 days; the most recent month/quarter may not yet be fully reflected.
Full composition 3 holdings · Category: DE
| Name | CUSIP | Value | % | Balance | Country |
|---|---|---|---|---|---|
| Goldman Sachs & Co. LLC | · | $35.0M | 108.90 | 472 | US |
| Goldman Sachs & Co. LLC | · | $30K | 0.09 | 472 | US |
| Goldman Sachs & Co. LLC | · | -$3.0M | -9.26 | -472 | US |
Sector breakdown
Institutional owners (13F) 19 filers
Institutions that report holding this ETF in their quarterly SEC Form 13F. Long positions only; a single filer may appear twice for separate option legs. Large offsetting put/call legs typically reflect market-making or hedged inventory, not directional conviction.
| Institution | Value | % of tracked 13F | Shares | Type | As of |
|---|---|---|---|---|---|
| Calamos Advisors LLC | $9,598,010 | 47.30% | 345,128 | Shares | June 30, 2026 |
| Calamos Wealth Management LLC | $2,717,843 | 13.39% | 97,729 | Shares | June 30, 2026 |
| OSAIC HOLDINGS, INC. | $2,615,963 | 12.89% | 94,067 | Shares | June 30, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1,785,652 | 8.80% | 64,209 | Shares | June 30, 2026 |
| Camelot Portfolios, LLC | $692,942 | 3.42% | 24,917 | Shares | June 30, 2026 |
| COMMONWEALTH EQUITY SERVICES, LLC | $569,630 | 2.81% | 20,483 | Shares | June 30, 2026 |
| FIDUCIARY FINANCIAL ADVISORS | $557,618 | 2.75% | 20,051 | Shares | June 30, 2026 |
| Blue Water Asset Management | $450,244 | 2.22% | 16,190 | Shares | June 30, 2026 |
| Spartan Wealth Advisory Services LLC | $297,817 | 1.47% | 10,709 | Shares | June 30, 2026 |
| Grantvest Financial Group LLC | $258,494 | 1.27% | 9,295 | Shares | June 30, 2026 |
| Sterling Financial Planning, Inc. | $222,981 | 1.10% | 8,018 | Shares | June 30, 2026 |
| HOHIMER WEALTH MANAGEMENT, LLC | $219,087 | 1.08% | 7,878 | Shares | June 30, 2026 |
| BURKETT FINANCIAL SERVICES, LLC | $129,249 | 0.64% | 4,598 | Shares | Sept. 30, 2026 |
| Innovative Asset Advisors Group, LLC | $112,213 | 0.55% | 4,035 | Shares | June 30, 2026 |
| UBS Group AG | $28,088 | 0.14% | 1,010 | Shares | June 30, 2026 |
| HARBOUR INVESTMENTS, INC. | $26,114 | 0.13% | 939 | Shares | June 30, 2026 |
| CREATIVE FINANCIAL DESIGNS INC /ADV | $8,371 | 0.04% | 301 | Shares | June 30, 2026 |
| Capital Analysts, LLC | $383 | 0.00% | 13,745 | Shares | June 30, 2026 |
| Motiv8 Investments LLC | $36 | 0.00% | 1,349 | Shares | Dec. 31, 2025 |