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Calamos S&P 500 Structured Alt Protection ETF - September (CPST)

Defined Outcome | Exchange Traded Fund | NYSEArca
28.10 USD +0.01 (0.048%) ⇧ (Aug. 28, 2026, 3:19 p.m. EDT)

Short-term:★★⯪☆☆Long-term:★★⯪☆☆Dividends:☆☆☆☆☆
Hot Take | Aug. 22, 2026, 1:44 a.m. EDT

The short-term outlook remains neutral due to the instrument's nature as a structured protection product with minimal price volatility over the last two weeks, trading flat near its 52-week highs without clear momentum catalysts. The long-term rating is neutral because the security is effectively new to the market, having only one year of price history available, which prevents any assessment of multi-year business quality or structural trends despite a modest positive annual return. There is no dividend income to consider, as the entity has not issued any payouts in the last five years, making it unsuitable for income-focused strategies.

Model Selection — Backtest MAE (log-scale, lower is better)
ModelMAE
MSTL ✓0.001742
AutoARIMA0.001779
AutoETS0.002174
AutoTheta0.004491

Forecast horizon: 45 days | Selected: MSTL

Forecast Reliability
Score 84%
H-stat 0.53
Ljung-Box p 0.000
Jarque-Bera p 0.774
Excess Kurtosis -0.09

Info Dump

Attribute Value
All Time High 28.13
All Time Low 24.63
Ask 42.57
Ask Size 100
Average Daily Volume10 Day 990
Average Daily Volume3 Month 1,541
Average Volume 1,541
Average Volume10Days 990
Beta3 Year 0.0
Bid 13.6
Bid Size 200
Category Defined Outcome
Crypto Tradeable 0
Currency USD
Custom Price Alert Confidence HIGH
Day High 28.1299
Day Low 28.07
Dividend Yield 0.0
Esg Populated 0
Exchange PCX
Exchange Data Delayed By 0
Exchange Timezone Name America/New_York
Exchange Timezone Short Name EDT
Fifty Day Average 27.93216
Fifty Day Average Change 0.16764069
Fifty Day Average Change Percent 0.0060017086
Fifty Two Week Change Percent 5.877924
Fifty Two Week High 28.13
Fifty Two Week High Change -0.03019905
Fifty Two Week High Change Percent -0.0010735532
Fifty Two Week Low 26.455
Fifty Two Week Low Change 1.6448002
Fifty Two Week Low Change Percent 0.062173508
Fifty Two Week Range 26.455 - 28.13
First Trade Date Milliseconds 1,725,370,200,000
Full Exchange Name NYSEArca
Fullday Change 0.013401
Fullday Change Percent 0.0477136
Fullday Price 28.0998
Fund Family Calamos
Fund Inception Date 1,724,976,000
Gmt Off Set Milliseconds -14,400,000
Has Pre Post Market Data 1
Language en-US
Legal Type Exchange Traded Fund
Long Business Summary Under normal market conditions, the fund will invest substantially all of its assets in FLexible EXchange Options ("FLEX Options") that reference the price performance of the SPDR®? S&P 500®? ETF Trust (the "Underlying ETF"). The fund is non-diversified.
Long Name Calamos S&P 500 Structured Alt Protection ETF - September
Market us_market
Market State CLOSED
Max Age 86,400
Message Board Id finmb_1893278875
Nav Price 28.08
Net Assets 32,182,904.0
Net Expense Ratio 0.69
Open 28.1
Previous Close 28.0864
Price Hint 2
Quote Source Name Delayed Quote
Quote Type ETF
Region US
Regular Market Change 0.013401
Regular Market Change Percent 0.0477136
Regular Market Day High 28.1299
Regular Market Day Low 28.07
Regular Market Day Range 28.07 - 28.1299
Regular Market Open 28.1
Regular Market Previous Close 28.0864
Regular Market Price 28.0998
Regular Market Time 1,787,944,789
Regular Market Volume 5,397
Short Name Calamos S&P 500 Structured Alt
Source Interval 15
Symbol CPST
Total Assets 32,182,904
Tradeable 0
Trailing Annual Dividend Rate 0.0
Trailing Annual Dividend Yield 0.0
Trailing Peg Ratio None
Trailing Three Month Nav Returns 1.5971
Trailing Three Month Returns 1.5971
Triggerable 1
Two Hundred Day Average 27.395935
Two Hundred Day Average Change 0.70386505
Two Hundred Day Average Change Percent 0.025692318
Type Disp ETF
Volume 5,397
Yield 0.0
Ytd Return 3.32226