What is CPSO's market cap?

$28.32M, based on the Sep 28 close of $28.32.

NYSE Arca · CPSO

Calamos S&P 500 Structured Alt Protection ETF - October (CPSO)

$28.320.00%

Close Sep 28, 2026 · split-adjusted

Sep 28, 2026$28.32▲ 5.81% in range

Sep 29, 2025Low $26.73 · High $28.32Sep 28, 2026

What changed · written from our data

As of Sep 28, 2026

Calamos S&P 500 Structured Alt Protection ETF - October closed at $28.32 on Sep 28, up 0.00% — matching its 52-week closing high. Volume of 3.8K shares was 5.60× its 20-day average (well above normal).

Split-adjusted performance: +0.4% over one month, +5.4% over six months, +5.8% over one year.

Short interest was 18.0K shares at the Sep 15 settlement, down 8.2% from the prior report (36.6 days to cover).

Market cap$28.3M1.0M shares

Revenue · quarter——

Diluted EPS——

P/E · TTM—

Net margin—

Dividend yieldNone

52-week range26.73 – 28.320.0% from high

Volume3.8K5.60× 20-day avg

Volatility · 60d1.6%Annualised

Short % of float—36.6 days to cover

Net cash—

Next earnings—Not scheduled

Split-adjusted performance

1W +0.1%1M +0.4%3M +1.9%6M +5.4%YTD +4.6%1Y +5.8%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 short18.0K−8.2% vs prior

Days to cover36.6Settled Sep 15

% of float—

Short vol. 10d42.4%of daily volume

News about Calamos S&P 500 Structured Alt Protection ETF - October

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Quick answers

What is CPSO's market cap?: $28.32M, based on the Sep 28 close of $28.32.

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