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CPSO — Calamos S&P 500 Structured Alt Protection ETF - October
NYSE ArcaCalamos S&P 500 Structured Alt Protection ETF - October
$28.42
+0.01(+0.04%)
- O
- 28.45
- H
- 28.47
- L
- 28.40
- V
- 28.49K
⏱️ End-of-day dataAs of Oct 2, 2026
Latest Close$28.42
Period Return+5682899.77%
Period High$28.55
Period Low$0.00
Avg Daily Volume1.3K
Total Trading Days365
CPSO — Historical OHLCV Price & Volume Table
Dec 20, 2021 — Oct 2, 2026| Date▼ | Open⇅ | High⇅ | Low⇅ | Close⇅ | Change ($)⇅ | Change (%)⇅ | Volume⇅ | VWAP⇅ | Day Range (L - H) |
|---|---|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | $28.45 | $28.47 | $28.40 | $28.42 | +$0.01 | +0.04% | 28,494 | $28.44 | $28.40 $28.47 |
| Oct 1, 2026 | $28.39 | $28.55 | $28.34 | $28.40 | +$0.08 | +0.29% | 53,798 | $28.38 | $28.34 $28.55 |
| Sep 30, 2026 | $28.34 | $28.36 | $28.30 | $28.32 | $-0.04 | -0.12% | 11,962 | $28.34 | $28.30 $28.36 |
| Sep 29, 2026 | $28.34 | $28.36 | $28.32 | $28.36 | +$0.04 | +0.12% | 9,700 | $28.34 | $28.32 $28.36 |
| Sep 28, 2026 | $28.31 | $28.36 | $28.30 | $28.32 | +$0.00 | +0.00% | 3,768 | $28.34 | $28.30 $28.36 |
| Sep 25, 2026 | $28.28 | $28.32 | $28.28 | $28.32 | +$0.01 | +0.03% | 1,167 | $28.28 | $28.28 $28.32 |
| Sep 24, 2026 | $28.31 | $28.31 | $28.31 | $28.31 | $-0.01 | -0.02% | 168 | $28.32 | $28.31 $28.31 |
| Sep 23, 2026 | $28.32 | $28.32 | $28.32 | $28.32 | +$0.01 | +0.05% | 135 | $28.31 | $28.32 $28.32 |
| Sep 22, 2026 | $28.30 | $28.30 | $28.30 | $28.30 | +$0.00 | +0.01% | 53 | $28.29 | $28.30 $28.30 |
| Sep 21, 2026 | $28.30 | $28.30 | $28.30 | $28.30 | +$0.01 | +0.04% | 22 | $28.29 | $28.30 $28.30 |
| Sep 18, 2026 | $28.30 | $28.30 | $28.29 | $28.29 | +$0.03 | +0.09% | 476 | $28.30 | $28.29 $28.30 |
| Sep 17, 2026 | $28.24 | $28.27 | $28.24 | $28.27 | $-0.01 | -0.04% | 240 | $28.24 | $28.24 $28.27 |
| Sep 16, 2026 | $28.28 | $28.28 | $28.28 | $28.28 | +$0.03 | +0.12% | 583 | $28.28 | $28.28 $28.28 |
| Sep 15, 2026 | $28.24 | $28.24 | $28.24 | $28.24 | $-0.01 | -0.05% | 7 | $28.26 | $28.24 $28.24 |
| Sep 14, 2026 | $28.28 | $28.28 | $28.25 | $28.25 | +$0.00 | +0.01% | 598 | $28.27 | $28.25 $28.28 |
| Sep 11, 2026 | $28.25 | $28.25 | $28.25 | $28.25 | +$0.02 | +0.05% | 128 | $28.26 | $28.25 $28.25 |
| Sep 10, 2026 | $28.24 | $28.27 | $28.23 | $28.23 | $-0.01 | -0.02% | 1,609 | $28.25 | $28.23 $28.27 |
| Sep 9, 2026 | $28.24 | $28.24 | $28.24 | $28.24 | $-0.01 | -0.04% | 737 | $28.24 | $28.24 $28.24 |
| Sep 8, 2026 | $28.25 | $28.25 | $28.25 | $28.25 | $-0.00 | +0.00% | 114 | $28.28 | $28.25 $28.25 |
| Sep 4, 2026 | $28.25 | $28.25 | $28.25 | $28.25 | +$0.01 | +0.04% | 199 | $28.26 | $28.25 $28.25 |
| Sep 3, 2026 | $28.19 | $28.26 | $28.19 | $28.24 | +$0.02 | +0.07% | 1,234 | $28.21 | $28.19 $28.26 |
| Sep 2, 2026 | $28.22 | $28.22 | $28.22 | $28.22 | +$0.02 | +0.07% | 38 | $28.22 | $28.22 $28.22 |
| Sep 1, 2026 | $28.21 | $28.21 | $28.20 | $28.20 | $-0.01 | -0.04% | 250 | $28.22 | $28.20 $28.21 |
| Aug 31, 2026 | $28.25 | $28.25 | $28.20 | $28.21 | +$0.00 | +0.00% | 5,513 | $28.21 | $28.20 $28.25 |
| Aug 28, 2026 | $28.21 | $28.21 | $28.21 | $28.21 | +$0.01 | +0.02% | 183 | $28.20 | $28.21 $28.21 |
| Aug 27, 2026 | $28.20 | $28.20 | $28.20 | $28.20 | +$0.01 | +0.05% | 198 | $28.23 | $28.20 $28.20 |
| Aug 26, 2026 | $28.19 | $28.19 | $28.19 | $28.19 | +$0.03 | +0.09% | 99 | $28.18 | $28.19 $28.19 |
| Aug 25, 2026 | $28.18 | $28.18 | $28.15 | $28.17 | +$0.01 | +0.04% | 947 | $28.18 | $28.15 $28.18 |
| Aug 24, 2026 | $28.15 | $28.16 | $28.15 | $28.16 | +$0.00 | +0.00% | 4,011 | $28.15 | $28.15 $28.16 |
| Aug 21, 2026 | $28.15 | $28.15 | $28.15 | $28.15 | +$0.03 | +0.09% | 7 | $28.14 | $28.15 $28.15 |