Calamos S&P 500 Structured Alt Protection ETF - October (CPSO)
NYSEARCA: CPSO · Real-Time Price · USD
27.52
+0.01 (0.04%)
At close: Apr 28, 2026, 4:00 PM EDT
27.52
0.00 (0.00%)
After-hours: Apr 28, 2026, 8:00 PM EDT
CPSO Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Apr 28, 2026 | 27.47 | 27.52 | 27.47 | 27.52 | 27.52 | 0.04% | 228 |
| Apr 27, 2026 | 27.51 | 27.51 | 27.51 | 27.51 | 27.51 | -0.07% | - |
| Apr 24, 2026 | 27.52 | 27.52 | 27.52 | 27.52 | 27.52 | 0.24% | 107 |
| Apr 23, 2026 | 27.46 | 27.46 | 27.46 | 27.46 | 27.46 | -0.12% | 88 |
| Apr 22, 2026 | 27.47 | 27.49 | 27.46 | 27.49 | 27.49 | 0.15% | 1,667 |
| Apr 21, 2026 | 27.49 | 27.49 | 27.45 | 27.45 | 27.45 | -0.09% | 5,915 |
| Apr 20, 2026 | 27.44 | 27.48 | 27.44 | 27.48 | 27.48 | -0.05% | 1,580 |
| Apr 17, 2026 | 27.46 | 27.49 | 27.45 | 27.49 | 27.49 | 0.27% | 821 |
| Apr 16, 2026 | 27.42 | 27.42 | 27.42 | 27.42 | 27.42 | 0.02% | 66 |
| Apr 15, 2026 | 27.41 | 27.41 | 27.41 | 27.41 | 27.41 | 0.13% | 2 |
| Apr 14, 2026 | 27.38 | 27.38 | 27.38 | 27.38 | 27.38 | 0.26% | 156 |
| Apr 13, 2026 | 27.26 | 27.33 | 27.26 | 27.31 | 27.31 | 0.15% | 494 |
| Apr 10, 2026 | 27.27 | 27.27 | 27.27 | 27.27 | 27.27 | - | 5 |
| Apr 9, 2026 | 27.27 | 27.27 | 27.27 | 27.27 | 27.27 | 0.16% | 60 |
| Apr 8, 2026 | 27.18 | 27.22 | 27.18 | 27.22 | 27.22 | 0.58% | 3,086 |
| Apr 7, 2026 | 27.06 | 27.06 | 27.06 | 27.06 | 27.06 | -0.02% | - |
| Apr 6, 2026 | 27.08 | 27.08 | 27.07 | 27.07 | 27.07 | 0.04% | 370 |
| Apr 2, 2026 | 27.05 | 27.06 | 27.02 | 27.06 | 27.06 | 0.04% | 2,450 |
| Apr 1, 2026 | 27.10 | 27.10 | 27.05 | 27.05 | 27.05 | 0.17% | 1,076 |
| Mar 31, 2026 | 26.94 | 27.00 | 26.94 | 27.00 | 27.00 | 0.52% | 100 |
| Mar 30, 2026 | 26.85 | 26.87 | 26.85 | 26.87 | 26.86 | -0.02% | 268 |
| Mar 27, 2026 | 26.92 | 26.92 | 26.86 | 26.87 | 26.87 | -0.24% | 1,325 |
| Mar 26, 2026 | 26.96 | 26.96 | 26.94 | 26.94 | 26.94 | -0.43% | 326 |
| Mar 25, 2026 | 27.05 | 27.05 | 27.05 | 27.05 | 27.05 | 0.13% | 67 |
| Mar 24, 2026 | 27.04 | 27.04 | 27.02 | 27.02 | 27.02 | -0.13% | 224 |
| Mar 23, 2026 | 27.07 | 27.07 | 27.01 | 27.05 | 27.05 | 0.26% | 545 |
| Mar 20, 2026 | 26.97 | 27.00 | 26.97 | 26.98 | 26.98 | -0.26% | 2,536 |
| Mar 19, 2026 | 27.01 | 27.05 | 27.01 | 27.05 | 27.05 | -0.07% | 4,507 |
| Mar 18, 2026 | 27.07 | 27.07 | 27.07 | 27.07 | 27.07 | -0.24% | 400 |
| Mar 17, 2026 | 27.10 | 27.14 | 27.10 | 27.14 | 27.13 | 0.06% | 3,444 |
| Mar 16, 2026 | 27.12 | 27.12 | 27.12 | 27.12 | 27.12 | 0.21% | 24 |
| Mar 13, 2026 | 27.04 | 27.06 | 27.04 | 27.06 | 27.06 | -0.10% | 400 |
| Mar 12, 2026 | 27.15 | 27.15 | 27.09 | 27.09 | 27.09 | -0.29% | 150 |
| Mar 11, 2026 | 27.12 | 27.17 | 27.12 | 27.17 | 27.17 | -0.02% | 159 |
| Mar 10, 2026 | 27.17 | 27.18 | 27.17 | 27.18 | 27.18 | -0.02% | 168 |
| Mar 9, 2026 | 27.07 | 27.18 | 27.07 | 27.18 | 27.18 | 0.11% | 1,762 |
| Mar 6, 2026 | 27.13 | 27.15 | 27.13 | 27.15 | 27.15 | -0.08% | 1,132 |
| Mar 5, 2026 | 27.24 | 27.24 | 27.13 | 27.18 | 27.18 | -0.19% | 1,441 |
| Mar 4, 2026 | 27.26 | 27.26 | 27.23 | 27.23 | 27.23 | 0.16% | 260 |
| Mar 3, 2026 | 27.17 | 27.22 | 27.17 | 27.18 | 27.18 | -0.17% | 820 |
| Mar 2, 2026 | 27.17 | 27.25 | 27.17 | 27.23 | 27.23 | 0.03% | 2,014 |
| Feb 27, 2026 | 27.23 | 27.24 | 27.22 | 27.22 | 27.22 | -0.06% | 2,162 |
| Feb 26, 2026 | 27.19 | 27.24 | 27.19 | 27.24 | 27.24 | -0.08% | 1,305 |
| Feb 25, 2026 | 27.23 | 27.26 | 27.23 | 27.26 | 27.26 | 0.15% | 1,693 |
| Feb 24, 2026 | 27.22 | 27.22 | 27.19 | 27.22 | 27.22 | 0.24% | 1,252 |
| Feb 23, 2026 | 27.17 | 27.17 | 27.16 | 27.16 | 27.16 | -0.28% | 526 |
| Feb 20, 2026 | 27.23 | 27.23 | 27.23 | 27.23 | 27.23 | 0.15% | 220 |
| Feb 19, 2026 | 27.19 | 27.19 | 27.19 | 27.19 | 27.19 | -0.06% | 150 |
| Feb 18, 2026 | 27.18 | 27.24 | 27.17 | 27.21 | 27.21 | 0.13% | 5,510 |
| Feb 17, 2026 | 27.21 | 27.22 | 27.12 | 27.17 | 27.17 | 0.02% | 4,746 |