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

Defined Outcome | Exchange Traded Fund | NYSEArca
27.89 USD -0.01 (-0.036%) ⇩ (July 9, 2026, 3:05 p.m. EDT)

Short-term:★★⯪☆☆Long-term:★★⯪☆☆Dividends:☆☆☆☆☆
Hot Take | July 11, 2026, 3:22 a.m. EDT

This instrument is a short-term structured product with zero long-term investment merit. The price action over the last two weeks shows negligible movement, trading in a tight range between $27.73 and $27.87, which is typical for a hedging vehicle rather than a momentum play. The statistical forecast model indicates a very high confidence in a slight upward drift over the next 45 days, suggesting the structure may be capturing a specific short-term market view, but this does not constitute a high-conviction entry for a general investor. Crucially, there is no dividend history and the price trajectory data indicates the security is newly listed or lacks a multi-year track record, making any long-term fundamental assessment impossible. It is a speculative vehicle for a specific expiration date, not a core holding.

Model Selection — Backtest MAE (log-scale, lower is better)
ModelMAE
MSTL ✓0.001344
AutoETS0.001918
AutoARIMA0.002023
AutoTheta0.004858

Forecast horizon: 45 days | Selected: MSTL

Forecast Reliability
Score 84%
H-stat 0.47
Ljung-Box p 0.000
Jarque-Bera p 0.745
Excess Kurtosis -0.54

Info Dump

Attribute Value
All Time High 27.9
All Time Low 24.63
Ask 27.93
Ask Size 900
Average Daily Volume10 Day 680
Average Daily Volume3 Month 1,449
Average Volume 1,449
Average Volume10Days 680
Beta3 Year 0.0
Bid 27.87
Bid Size 100
Category Defined Outcome
Crypto Tradeable 0
Currency USD
Custom Price Alert Confidence HIGH
Day High 27.89
Day Low 27.89
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 27.70258
Fifty Day Average Change 0.18741989
Fifty Day Average Change Percent 0.0067654313
Fifty Two Week Change Percent 6.51294
Fifty Two Week High 27.9
Fifty Two Week High Change -0.010000229
Fifty Two Week High Change Percent -0.00035843113
Fifty Two Week Low 26.16
Fifty Two Week Low Change 1.7299995
Fifty Two Week Low Change Percent 0.06613148
Fifty Two Week Range 26.16 - 27.9
First Trade Date Milliseconds 1,725,370,200,000
Full Exchange Name NYSEArca
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 POSTPOST
Max Age 86,400
Message Board Id finmb_1893278875
Nav Price 27.91
Net Assets 32,040,460.0
Net Expense Ratio 0.69
New Symbol CEPL
Open 27.88
Previous Close 27.9
Price Hint 2
Quote Source Name Delayed Quote
Quote Type ETF
Region US
Regular Market Change -0.0100002
Regular Market Change Percent -0.0358431
Regular Market Day High 27.89
Regular Market Day Low 27.89
Regular Market Day Range 27.89 - 27.89
Regular Market Open 27.88
Regular Market Previous Close 27.9
Regular Market Price 27.89
Regular Market Time 1,783,623,902
Regular Market Volume 7
Short Name Calamos S&P 500 Structured Alt
Source Interval 15
Symbol CPST
Total Assets 32,040,460
Tradeable 0
Trailing Annual Dividend Rate 0.0
Trailing Annual Dividend Yield 0.0
Trailing Peg Ratio None
Trailing Three Month Nav Returns 3.07066
Trailing Three Month Returns 3.07066
Triggerable 1
Two Hundred Day Average 27.187965
Two Hundred Day Average Change 0.702034
Two Hundred Day Average Change Percent 0.025821498
Type Disp ETF
Volume 7
Yield 0.0
Ytd Return 2.84238