Calamos S&P 500 Structured Alt Protection ETF - October (CPSO)
NYSEARCA: CPSO · Real-Time Price · USD
26.86
+0.02 (0.09%)
At close: Oct 8, 2025, 4:00 PM EDT
26.86
0.00 (0.00%)
After-hours: Oct 8, 2025, 8:00 PM EDT
CPSO Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 8, 2025 | 26.84 | 26.87 | 26.84 | 26.86 | 26.86 | 0.09% | 12,389 |
| Oct 7, 2025 | 26.85 | 26.85 | 26.83 | 26.83 | 26.83 | -0.14% | 4,513 |
| Oct 6, 2025 | 26.86 | 26.87 | 26.85 | 26.87 | 26.87 | 0.13% | 12,586 |
| Oct 3, 2025 | 26.86 | 26.88 | 26.84 | 26.84 | 26.84 | -0.01% | 19,956 |
| Oct 2, 2025 | 26.81 | 26.85 | 26.80 | 26.84 | 26.84 | -0.04% | 25,379 |
| Oct 1, 2025 | 26.81 | 26.98 | 26.80 | 26.85 | 26.85 | 0.19% | 117,126 |
| Sep 30, 2025 | 26.77 | 26.81 | 26.75 | 26.80 | 26.80 | 0.12% | 14,353 |
| Sep 29, 2025 | 26.76 | 26.78 | 26.76 | 26.77 | 26.77 | 0.04% | 6,071 |
| Sep 26, 2025 | 26.76 | 26.76 | 26.76 | 26.76 | 26.76 | - | 140 |
| Sep 25, 2025 | 26.75 | 26.76 | 26.75 | 26.76 | 26.76 | -0.02% | 1,433 |
| Sep 24, 2025 | 26.74 | 26.76 | 26.74 | 26.76 | 26.76 | 0.04% | 131 |
| Sep 23, 2025 | 26.75 | 26.75 | 26.75 | 26.75 | 26.75 | 0.02% | - |
| Sep 22, 2025 | 26.74 | 26.75 | 26.73 | 26.75 | 26.75 | - | 1,300 |
| Sep 19, 2025 | 26.75 | 26.75 | 26.75 | 26.75 | 26.75 | 0.02% | - |
| Sep 18, 2025 | 26.73 | 26.74 | 26.72 | 26.74 | 26.74 | 0.04% | 338 |
| Sep 17, 2025 | 26.73 | 26.73 | 26.73 | 26.73 | 26.73 | - | - |
| Sep 16, 2025 | 26.73 | 26.73 | 26.73 | 26.73 | 26.73 | - | - |
| Sep 15, 2025 | 26.73 | 26.73 | 26.73 | 26.73 | 26.73 | - | - |
| Sep 12, 2025 | 26.73 | 26.73 | 26.73 | 26.73 | 26.73 | 0.05% | - |
| Sep 11, 2025 | 26.69 | 26.72 | 26.69 | 26.72 | 26.72 | 0.04% | 1,504 |
| Sep 10, 2025 | 26.68 | 26.71 | 26.68 | 26.71 | 26.71 | 0.04% | 196 |
| Sep 9, 2025 | 26.69 | 26.69 | 26.69 | 26.69 | 26.69 | 0.03% | - |
| Sep 8, 2025 | 26.66 | 26.69 | 26.66 | 26.69 | 26.69 | 0.02% | 210 |
| Sep 5, 2025 | 26.67 | 26.68 | 26.64 | 26.68 | 26.68 | 0.05% | 824 |
| Sep 4, 2025 | 26.67 | 26.67 | 26.67 | 26.67 | 26.67 | 0.09% | 167 |
| Sep 3, 2025 | 26.60 | 26.64 | 26.60 | 26.64 | 26.64 | 0.12% | 167 |
| Sep 2, 2025 | 26.61 | 26.61 | 26.61 | 26.61 | 26.61 | -0.11% | - |
| Aug 29, 2025 | 26.64 | 26.64 | 26.64 | 26.64 | 26.64 | -0.03% | 425 |
| Aug 28, 2025 | 26.62 | 26.65 | 26.62 | 26.65 | 26.65 | 0.06% | 425 |
| Aug 27, 2025 | 26.63 | 26.63 | 26.63 | 26.63 | 26.63 | 0.06% | 270 |
| Aug 26, 2025 | 26.62 | 26.62 | 26.57 | 26.62 | 26.62 | 0.03% | 270 |
| Aug 25, 2025 | 26.61 | 26.61 | 26.61 | 26.61 | 26.61 | 0.01% | 174 |
| Aug 22, 2025 | 26.53 | 26.61 | 26.53 | 26.61 | 26.61 | 0.28% | 174 |
| Aug 21, 2025 | 26.50 | 26.53 | 26.50 | 26.53 | 26.53 | -0.07% | 484 |
| Aug 20, 2025 | 26.51 | 26.57 | 26.51 | 26.55 | 26.55 | - | 1,077 |
| Aug 19, 2025 | 26.54 | 26.55 | 26.53 | 26.55 | 26.55 | -0.08% | 402 |
| Aug 18, 2025 | 26.53 | 26.62 | 26.53 | 26.57 | 26.57 | 0.04% | 37,647 |
| Aug 15, 2025 | 26.53 | 26.56 | 26.53 | 26.56 | 26.56 | 0.11% | 127 |
| Aug 14, 2025 | 26.52 | 26.53 | 26.52 | 26.53 | 26.53 | -0.11% | 321 |
| Aug 13, 2025 | 26.56 | 26.56 | 26.52 | 26.56 | 26.56 | 0.04% | 4,308 |
| Aug 12, 2025 | 26.50 | 26.55 | 26.50 | 26.55 | 26.55 | 0.29% | 2,065 |
| Aug 11, 2025 | 26.48 | 26.48 | 26.47 | 26.47 | 26.47 | -0.04% | 848 |
| Aug 8, 2025 | 26.48 | 26.48 | 26.48 | 26.48 | 26.48 | 0.09% | 1 |
| Aug 7, 2025 | 26.46 | 26.46 | 26.46 | 26.46 | 26.46 | -0.01% | 896 |
| Aug 6, 2025 | 26.46 | 26.46 | 26.46 | 26.46 | 26.46 | 0.16% | 896 |
| Aug 5, 2025 | 26.42 | 26.42 | 26.42 | 26.42 | 26.42 | -0.06% | 1,720 |
| Aug 4, 2025 | 26.44 | 26.44 | 26.44 | 26.44 | 26.44 | 0.30% | 1,973 |
| Aug 1, 2025 | 26.36 | 26.36 | 26.36 | 26.36 | 26.36 | -0.25% | 1,993 |
| Jul 31, 2025 | 26.43 | 26.44 | 26.40 | 26.42 | 26.42 | -0.07% | 5,323 |
| Jul 30, 2025 | 26.43 | 26.48 | 26.40 | 26.44 | 26.44 | -0.02% | 4,322 |