Calamos S&P 500 Structured Alt Protection ETF - September (CPST)
NYSEARCA: CPST · Real-Time Price · USD
28.13
-0.07 (-0.26%)
At close: Oct 16, 2026, 4:00 PM EDT
28.13
0.00 (0.00%)
After-hours: Oct 16, 2026, 4:10 PM EDT
CPST Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 16, 2026 | 28.18 | 28.18 | 28.12 | 28.13 | 28.13 | -0.26% | 6,017 |
| Oct 15, 2026 | 28.22 | 28.24 | 28.21 | 28.21 | 28.21 | 0.09% | 874 |
| Oct 14, 2026 | 28.24 | 28.24 | 28.18 | 28.18 | 28.18 | -0.18% | 4,884 |
| Oct 13, 2026 | 28.23 | 28.23 | 28.23 | 28.23 | 28.23 | -0.04% | 7 |
| Oct 12, 2026 | 28.25 | 28.28 | 28.22 | 28.24 | 28.24 | -0.02% | 3,586 |
| Oct 9, 2026 | 28.27 | 28.27 | 28.22 | 28.25 | 28.25 | 0.12% | 1,134 |
| Oct 8, 2026 | 28.25 | 28.25 | 28.21 | 28.21 | 28.21 | -0.07% | 1,196 |
| Oct 7, 2026 | 28.30 | 28.30 | 28.18 | 28.24 | 28.24 | -0.02% | 26,916 |
| Oct 6, 2026 | 28.24 | 28.24 | 28.24 | 28.24 | 28.24 | 0.19% | 777 |
| Oct 5, 2026 | 28.18 | 28.20 | 28.18 | 28.19 | 28.19 | 0.06% | 1,994 |
| Oct 2, 2026 | 28.18 | 28.18 | 28.15 | 28.17 | 28.17 | 0.11% | 2,062 |
| Oct 1, 2026 | 28.11 | 28.14 | 28.08 | 28.14 | 28.14 | 0.11% | 102,799 |
| Sep 30, 2026 | 28.13 | 28.14 | 28.09 | 28.11 | 28.11 | 0.09% | 6,180 |
| Sep 29, 2026 | 28.08 | 28.10 | 28.08 | 28.09 | 28.08 | 0.02% | 4,274 |
| Sep 28, 2026 | 28.08 | 28.08 | 28.08 | 28.08 | 28.08 | -0.21% | 124 |
| Sep 25, 2026 | 28.11 | 28.16 | 28.11 | 28.14 | 28.14 | 0.16% | 2,849 |
| Sep 24, 2026 | 28.10 | 28.14 | 28.09 | 28.09 | 28.09 | -0.11% | 4,329 |
| Sep 23, 2026 | 28.08 | 28.14 | 28.08 | 28.12 | 28.12 | -0.04% | 32,304 |
| Sep 22, 2026 | 28.06 | 28.18 | 28.06 | 28.14 | 28.14 | 0.06% | 4,792 |
| Sep 21, 2026 | 28.08 | 28.14 | 28.08 | 28.12 | 28.12 | 0.21% | 1,370 |
| Sep 18, 2026 | 28.06 | 28.06 | 28.05 | 28.06 | 28.06 | -0.01% | 743 |
| Sep 17, 2026 | 28.03 | 28.07 | 28.02 | 28.07 | 28.06 | 0.34% | 10,928 |
| Sep 16, 2026 | 28.03 | 28.05 | 27.92 | 27.97 | 27.97 | -0.15% | 7,208 |
| Sep 15, 2026 | 28.22 | 28.22 | 28.01 | 28.01 | 28.01 | -0.06% | 9,979 |
| Sep 14, 2026 | 28.04 | 28.15 | 28.03 | 28.03 | 28.03 | -0.12% | 5,033 |
| Sep 11, 2026 | 28.09 | 28.11 | 28.06 | 28.06 | 28.06 | 0.18% | 8,927 |
| Sep 10, 2026 | 27.99 | 28.05 | 27.99 | 28.01 | 28.01 | -0.20% | 6,917 |
| Sep 9, 2026 | 28.10 | 28.10 | 28.03 | 28.07 | 28.07 | -0.17% | 9,850 |
| Sep 8, 2026 | 28.20 | 28.26 | 28.09 | 28.12 | 28.12 | -0.05% | 17,965 |
| Sep 4, 2026 | 28.18 | 28.18 | 28.11 | 28.13 | 28.13 | -0.16% | 13,443 |
| Sep 3, 2026 | 28.14 | 28.25 | 28.11 | 28.18 | 28.18 | 0.29% | 24,620 |
| Sep 2, 2026 | 28.09 | 28.11 | 28.04 | 28.10 | 28.10 | 0.08% | 25,874 |
| Sep 1, 2026 | 28.00 | 28.10 | 27.98 | 28.07 | 28.07 | -0.19% | 102,596 |
| Aug 31, 2026 | 28.13 | 28.13 | 28.07 | 28.13 | 28.13 | 0.09% | 7,233 |
| Aug 28, 2026 | 28.10 | 28.13 | 28.07 | 28.10 | 28.10 | 0.05% | 5,397 |
| Aug 27, 2026 | 28.10 | 28.10 | 28.09 | 28.09 | 28.09 | 0.02% | 457 |
| Aug 26, 2026 | 28.08 | 28.08 | 28.08 | 28.08 | 28.08 | 0.03% | 88 |
| Aug 25, 2026 | 28.08 | 28.12 | 28.07 | 28.07 | 28.07 | 0.05% | 1,692 |
| Aug 24, 2026 | 28.06 | 28.06 | 28.06 | 28.06 | 28.06 | - | 9 |
| Aug 21, 2026 | 28.08 | 28.08 | 28.06 | 28.06 | 28.06 | 0.02% | 107 |
| Aug 20, 2026 | 28.05 | 28.05 | 28.05 | 28.05 | 28.05 | 0.04% | 100 |
| Aug 19, 2026 | 28.03 | 28.04 | 28.03 | 28.04 | 28.04 | -0.04% | 634 |
| Aug 18, 2026 | 28.08 | 28.08 | 28.02 | 28.05 | 28.05 | 0.02% | 776 |
| Aug 17, 2026 | 28.01 | 28.07 | 28.01 | 28.05 | 28.05 | 0.01% | 517 |
| Aug 14, 2026 | 28.04 | 28.04 | 28.04 | 28.04 | 28.04 | 0.01% | 17 |
| Aug 13, 2026 | 28.04 | 28.04 | 28.04 | 28.04 | 28.04 | 0.07% | 28 |
| Aug 12, 2026 | 28.04 | 28.04 | 28.00 | 28.02 | 28.02 | 0.04% | 5,844 |
| Aug 11, 2026 | 28.00 | 28.02 | 27.99 | 28.01 | 28.01 | - | 3,451 |
| Aug 10, 2026 | 28.01 | 28.01 | 27.99 | 28.01 | 28.01 | -0.05% | 771 |
| Aug 7, 2026 | 28.03 | 28.03 | 28.03 | 28.03 | 28.03 | 0.03% | 37 |