Calamos S&P 500 Structured Alt Protection ETF - September (CPST)
NYSEARCA: CPST · Real-Time Price · USD
27.48
+0.01 (0.04%)
At close: Apr 28, 2026, 4:00 PM EDT
27.48
0.00 (0.00%)
After-hours: Apr 28, 2026, 8:00 PM EDT
CPST Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Apr 28, 2026 | 27.48 | 27.48 | 27.48 | 27.48 | - | 0.04% | 283 |
| Apr 27, 2026 | 27.47 | 27.47 | 27.47 | 27.47 | 27.47 | -0.02% | - |
| Apr 24, 2026 | 27.47 | 27.47 | 27.47 | 27.47 | 27.47 | 0.18% | 1 |
| Apr 23, 2026 | 27.42 | 27.42 | 27.42 | 27.42 | 27.42 | -0.09% | 200 |
| Apr 22, 2026 | 27.43 | 27.45 | 27.43 | 27.45 | 27.45 | 0.02% | 1,100 |
| Apr 21, 2026 | 27.44 | 27.44 | 27.44 | 27.44 | 27.44 | -0.05% | 1 |
| Apr 20, 2026 | 27.46 | 27.46 | 27.46 | 27.46 | 27.46 | -0.04% | - |
| Apr 17, 2026 | 27.40 | 27.47 | 27.40 | 27.47 | 27.46 | 0.31% | 2,040 |
| Apr 16, 2026 | 27.36 | 27.40 | 27.36 | 27.38 | 27.38 | - | 2,753 |
| Apr 15, 2026 | 27.38 | 27.38 | 27.38 | 27.38 | 27.38 | 0.09% | 5 |
| Apr 14, 2026 | 27.36 | 27.36 | 27.36 | 27.36 | 27.36 | 0.20% | 75 |
| Apr 13, 2026 | 27.30 | 27.30 | 27.30 | 27.30 | 27.30 | 0.13% | 80 |
| Apr 10, 2026 | 27.23 | 27.27 | 27.23 | 27.27 | 27.27 | 0.09% | 751 |
| Apr 9, 2026 | 27.24 | 27.24 | 27.24 | 27.24 | 27.24 | 0.11% | 1,481 |
| Apr 8, 2026 | 27.20 | 27.21 | 27.19 | 27.21 | 27.21 | 0.57% | 393 |
| Apr 7, 2026 | 27.05 | 27.06 | 27.02 | 27.06 | 27.05 | -0.09% | 603 |
| Apr 6, 2026 | 27.10 | 27.10 | 27.03 | 27.08 | 27.08 | 0.11% | 3,300 |
| Apr 2, 2026 | 27.01 | 27.05 | 27.01 | 27.05 | 27.05 | 0.02% | 612 |
| Apr 1, 2026 | 27.05 | 27.05 | 27.05 | 27.05 | 27.05 | 0.26% | 119 |
| Mar 31, 2026 | 26.87 | 27.02 | 26.87 | 26.98 | 26.98 | 0.54% | 1,117 |
| Mar 30, 2026 | 26.85 | 26.85 | 26.79 | 26.83 | 26.83 | -0.15% | 557 |
| Mar 27, 2026 | 26.88 | 26.88 | 26.84 | 26.87 | 26.87 | -0.20% | 415 |
| Mar 26, 2026 | 26.96 | 26.96 | 26.93 | 26.93 | 26.93 | -0.43% | 2,188 |
| Mar 25, 2026 | 27.03 | 27.08 | 27.03 | 27.04 | 27.04 | 0.19% | 2,365 |
| Mar 24, 2026 | 26.99 | 27.01 | 26.99 | 26.99 | 26.99 | -0.12% | 973 |
| Mar 23, 2026 | 27.02 | 27.02 | 27.02 | 27.02 | 27.02 | 0.22% | 102 |
| Mar 20, 2026 | 26.96 | 26.96 | 26.96 | 26.96 | 26.96 | -0.26% | 102 |
| Mar 19, 2026 | 27.00 | 27.04 | 27.00 | 27.04 | 27.03 | -0.13% | 642 |
| Mar 18, 2026 | 27.06 | 27.07 | 27.06 | 27.07 | 27.07 | -0.21% | 171 |
| Mar 17, 2026 | 27.13 | 27.13 | 27.13 | 27.13 | 27.13 | 0.07% | - |
| Mar 16, 2026 | 27.07 | 27.11 | 27.07 | 27.11 | 27.11 | 0.20% | 631 |
| Mar 13, 2026 | 27.05 | 27.06 | 27.05 | 27.05 | 27.05 | -0.11% | 2,222 |
| Mar 12, 2026 | 27.05 | 27.08 | 27.05 | 27.08 | 27.08 | -0.24% | 200 |
| Mar 11, 2026 | 27.12 | 27.15 | 27.11 | 27.15 | 27.15 | -0.02% | 1,547 |
| Mar 10, 2026 | 27.10 | 27.18 | 27.10 | 27.15 | 27.15 | 0.03% | 11,376 |
| Mar 9, 2026 | 27.05 | 27.14 | 27.05 | 27.14 | 27.14 | 0.07% | 3,112 |
| Mar 6, 2026 | 27.10 | 27.12 | 27.09 | 27.12 | 27.12 | -0.10% | 2,799 |
| Mar 5, 2026 | 27.14 | 27.15 | 27.11 | 27.15 | 27.15 | -0.15% | 6,363 |
| Mar 4, 2026 | 27.19 | 27.19 | 27.16 | 27.19 | 27.19 | 0.08% | 1,560 |
| Mar 3, 2026 | 27.17 | 27.17 | 27.17 | 27.17 | 27.17 | -0.08% | 90 |
| Mar 2, 2026 | 27.13 | 27.20 | 27.13 | 27.19 | 27.19 | 0.01% | 9,150 |
| Feb 27, 2026 | 27.19 | 27.19 | 27.19 | 27.19 | 27.19 | -0.02% | 198 |
| Feb 26, 2026 | 27.17 | 27.19 | 27.16 | 27.19 | 27.19 | -0.09% | 2,426 |
| Feb 25, 2026 | 27.21 | 27.22 | 27.21 | 27.22 | 27.22 | 0.13% | 779 |
| Feb 24, 2026 | 27.11 | 27.18 | 27.11 | 27.18 | 27.18 | 0.24% | 6,342 |
| Feb 23, 2026 | 27.12 | 27.12 | 27.11 | 27.11 | 27.11 | -0.21% | 2,909 |
| Feb 20, 2026 | 27.18 | 27.18 | 27.15 | 27.17 | 27.17 | 0.09% | 4,008 |
| Feb 19, 2026 | 27.13 | 27.15 | 27.13 | 27.15 | 27.15 | -0.07% | 332 |
| Feb 18, 2026 | 27.15 | 27.19 | 27.15 | 27.17 | 27.17 | 0.10% | 1,628 |
| Feb 17, 2026 | 27.14 | 27.14 | 27.14 | 27.14 | 27.14 | 0.01% | 342 |