CPST
Calamos S&P 500 Structured Alt Protection ETF - SeptemberNYSE
Updated 1 day ago
Coverage building
$28.23-0.04%
Close Oct 13, 2026
- Market cap
- —
- 1 month
- +0.7%
- 3 months
- +1.1%
- 1 year
- +5.4%
- 52-week range
- $26.68$28.25
- Dividend
- No dividends on record
- Short interest
- 11.7K sharessettled Sep 30, 2026 · +199.7% since Sep 15, 2026 · FINRA
End-of-day close from stored market data, not a live quote.
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No 8-K filings in the last 30 days.
Smart money context
Institutional coverage is still building for this ticker.
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Sentiment: unknown
No recent insider trades detected.
Red flags: 0
Largest 13-F holders · Q2 2026
18 filers reported a long position in CPST for Q2 2026. 13-F holdings are filed up to 45 days after the quarter ends.
| Holder | Value | Shares | Shares vs Q1 2026 |
|---|---|---|---|
| Calamos Advisors LLC | $9.6M | 345.1K | -20.3% |
| Calamos Wealth Management LLC | $2.7M | 97.7K | -4.5% |
| OSAIC HOLDINGS, INC. | $2.6M | 94.1K | -9.8% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $1.8M | 64.2K | +233.6% |
| Camelot Portfolios, LLC | $692.9K | 24.9K | -1.3% |
| COMMONWEALTH EQUITY SERVICES, LLC | $569.6K | 20.5K | Unchanged |
| FIDUCIARY FINANCIAL ADVISORS | $557.6K | 20.1K | New |
| Blue Water Asset Management | $450.2K | 16.2K | -2.2% |
| Capital Analysts, LLC | $383K | 13.7K | Unchanged |
| Spartan Wealth Advisory Services LLC | $297.8K | 10.7K | Unchanged |
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