NYSE Arca · CPSP

Calamos S&P 500 Structured Alt Protection ETF - April (CPSP)

$27.25−0.07%

Close Sep 28, 2026 · split-adjusted

Sep 28, 2026$27.25▲ 5.89% in range

Sep 29, 2025Low $25.71 · High $27.26Sep 28, 2026

What changed · written from our data

As of Sep 28, 2026

Calamos S&P 500 Structured Alt Protection ETF - April closed at $27.25 on Sep 28, down 0.07%, 0.1% below its 52-week closing high. Volume of 107 shares was 0.23× its 20-day average (below normal).

Split-adjusted performance: +0.2% over one month, +3.3% over six months, +6.0% over one year.

Short interest was 3.8K shares at the Sep 15 settlement, down 33.5% from the prior report (5.8 days to cover).

Market cap—

Revenue · quarter——

Diluted EPS——

P/E · TTM—

Net margin—

Dividend yieldNone

52-week range25.70 – 27.26−0.1% from high

Volume1070.23× 20-day avg

Volatility · 60d1.3%Annualised

Short % of float—5.8 days to cover

Net cash—

Next earnings—Not scheduled

Split-adjusted performance

1W +0.1%1M +0.2%3M +1.4%6M +3.3%YTD +4.5%1Y +6.0%3Y —5Y —

Earnings reactions

History →

No reported quarters with price history yet.

Rank within industry

Not enough peers to rank

6-month momentum—

Revenue growth—

Net margin—

Value (low P/E)—

Size—

Short interest

Details →

Shares short3.8K−33.5% vs prior

Days to cover5.8Settled Sep 15

% of float—

Short vol. 10d33.3%of daily volume

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Sources: Massive / Polygon daily aggregates (split-adjusted) · SEC filings via Massive · FINRA settlements via Massive · Financial Modeling Prep. Figures are dated where shown; research is informational, not investment advice. Methodology