All charts and data below are CPI-U inflation-adjusted and with dividends reinvested. (Why?)
CPST real return snapshot: after CPI-U inflation, CPST returned +2.79% over the past year and −0.89% YTD, with dividends reinvested. Since Sep. 3, 2024, CPST is up +5.14% in real purchasing-power return, or +2.87%/yr, and is currently −1.18% below its real total-return high on Jan. 13, 2026.
Data ending Fri Jun. 12, 2026
| Tue 2024-09-03💬 to Fri 2026-06-12 |
YTD
Return |
1 Year
Return |
||||
|---|---|---|---|---|---|---|
| CPST × |
−0.89%
2026-06-12 |
+2.79%
2026-06-12 |
||||
| Calamos S&P 500 Structured Alt Protection ETF - September NYSE Exchange-Traded Fund | ||||||
| Tue 2024-09-03💬 to Fri 2026-06-12 |
Overall
Return |
Exponential
Trendline |
||||
|---|---|---|---|---|---|---|
| CPST × |
+5.14%
+2.87%/yr |
+3.30%/yr
(R2=0.682) |
||||
| Calamos S&P 500 Structured Alt Protection ETF - September NYSE Exchange-Traded Fund | ||||||
| Tue 2024-09-03💬 to Fri 2026-06-12 |
Start
Value |
End
Value |
||||
|---|---|---|---|---|---|---|
| CPST × |
$10,000.00
2024-09-03 |
$10,514.32
2026-06-12 |
||||
| Calamos S&P 500 Structured Alt Protection ETF - September NYSE Exchange-Traded Fund | ||||||
| Year | CPST |
|---|---|
| 2026 (YTD) | −0.89% |
| 2025 | +3.95% |
| 2024 | +2.06% |
| Tue 2024-09-03💬 to Fri 2026-06-12 |
Current
Drawdown |
Worst
Drawdown |
||||
|---|---|---|---|---|---|---|
| CPST × |
−1.18%
from 2026-01-13 peak |
−4.37%
2025-04-08 from 2025-01-23 peak |
||||
| Calamos S&P 500 Structured Alt Protection ETF - September NYSE Exchange-Traded Fund | ||||||
| Period ending Fri 2026-06-12 |
1
Year |
2
Years |
3
Years |
5
Years |
10
Years |
|
|---|---|---|---|---|---|---|
| CPST × | +2.79% | — | — | — | — | |
| Calamos S&P 500 Structured Alt Protection ETF - September NYSE Exchange-Traded Fund | ||||||
