All charts and data below are CPI-U inflation-adjusted and with dividends reinvested. (Why?)

Total Real Returns

CPST: Total Real Return Chart (Dividends Reinvested, Inflation Adjusted)

CPST real return snapshot: after CPI-U inflation, CPST returned +2.26% over the past year and −0.08% YTD, with dividends reinvested. Since Sep. 3, 2024, CPST is up +6.01% in real purchasing-power return, or +3.14%/yr, and is currently −0.37% below its real total-return high on Jan. 13, 2026.

Data ending Thu Jul. 23, 2026

Growth of $10,000

Tue 2024-09-03💬 to Thu 2026-07-23 Overall
Return 		Exponential
Trendline
CPST × 		+6.01%
+3.14%/yr 		+3.21%/yr
R2=0.707
Calamos S&P 500 Structured Alt Protection ETF - September Exchange-Traded Fund

Growth of $10,000 Summary

Tue 2024-09-03💬 to Thu 2026-07-23 Start
Value 		End
Value
CPST × 		$10,000.00
2024-09-03 		$10,600.57
2026-07-23

This Year’s Performance

through 2026-07-23

  YTD YoY
CPST × 		−0.08% +2.26%

Drawdowns

  Current
Drawdown 		Worst
Drawdown
CPST × 		−0.37%
on 2026-07-23
from 2026-01-13 peak 		−4.37%
on 2025-04-08
from 2025-01-23 peak

Rolling Returns

Period ending Thu 2026-07-23 1 yr 2 yr 3 yr 5 yr 10 yr
CPST × 		+2.26% — — — —

Annual Returns

Year CPST
2026 (YTD) −0.08%
2025 +3.95%
2024 +2.06%