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CPST — Calamos S&P 500 Structured Alt Protection ETF - September
NYSE ArcaCalamos S&P 500 Structured Alt Protection ETF - September
$28.15
+0.01(+0.04%)
- O
- 28.18
- H
- 28.18
- L
- 28.15
- V
- 2.06K
⏱️ End-of-day dataAs of Oct 2, 2026
Latest Close$28.15
Period Return+13.34%
Period High$28.26
Period Low$24.84
Avg Daily Volume3.7K
Total Trading Days365
CPST — Historical OHLCV Price & Volume Table
Apr 22, 2025 — Oct 2, 2026| Date▼ | Open⇅ | High⇅ | Low⇅ | Close⇅ | Change ($)⇅ | Change (%)⇅ | Volume⇅ | VWAP⇅ | Day Range (L - H) |
|---|---|---|---|---|---|---|---|---|---|
| Oct 2, 2026 | $28.18 | $28.18 | $28.15 | $28.15 | +$0.01 | +0.04% | 2,061 | $28.16 | $28.15 $28.18 |
| Oct 1, 2026 | $28.11 | $28.14 | $28.08 | $28.14 | +$0.03 | +0.11% | 102,800 | $28.12 | $28.08 $28.14 |
| Sep 30, 2026 | $28.13 | $28.14 | $28.09 | $28.11 | +$0.03 | +0.09% | 6,181 | $28.13 | $28.09 $28.14 |
| Sep 29, 2026 | $28.08 | $28.10 | $28.08 | $28.08 | +$0.00 | +0.02% | 4,275 | $28.09 | $28.08 $28.10 |
| Sep 28, 2026 | $28.08 | $28.08 | $28.08 | $28.08 | $-0.06 | -0.21% | 125 | $28.10 | $28.08 $28.08 |
| Sep 25, 2026 | $28.11 | $28.16 | $28.11 | $28.14 | +$0.05 | +0.16% | 2,849 | $28.13 | $28.11 $28.16 |
| Sep 24, 2026 | $28.10 | $28.14 | $28.09 | $28.09 | $-0.03 | -0.11% | 4,330 | $28.12 | $28.09 $28.14 |
| Sep 23, 2026 | $28.08 | $28.14 | $28.08 | $28.12 | $-0.01 | -0.04% | 32,305 | $28.12 | $28.08 $28.14 |
| Sep 22, 2026 | $28.06 | $28.18 | $28.06 | $28.14 | +$0.02 | +0.06% | 4,793 | $28.16 | $28.06 $28.18 |
| Sep 21, 2026 | $28.08 | $28.14 | $28.08 | $28.12 | +$0.06 | +0.21% | 1,371 | $28.11 | $28.08 $28.14 |
| Sep 18, 2026 | $28.06 | $28.06 | $28.05 | $28.06 | $-0.00 | -0.01% | 744 | $28.05 | $28.05 $28.06 |
| Sep 17, 2026 | $28.03 | $28.06 | $28.02 | $28.06 | +$0.10 | +0.34% | 10,929 | $28.05 | $28.02 $28.06 |
| Sep 16, 2026 | $28.03 | $28.05 | $27.92 | $27.97 | $-0.04 | -0.15% | 7,209 | $28.02 | $27.92 $28.05 |
| Sep 15, 2026 | $28.22 | $28.22 | $28.01 | $28.01 | $-0.02 | -0.06% | 9,980 | $28.03 | $28.01 $28.22 |
| Sep 14, 2026 | $28.04 | $28.15 | $28.03 | $28.03 | $-0.03 | -0.12% | 5,034 | $28.05 | $28.03 $28.15 |
| Sep 11, 2026 | $28.09 | $28.11 | $28.06 | $28.06 | +$0.05 | +0.18% | 8,928 | $28.09 | $28.06 $28.11 |
| Sep 10, 2026 | $27.99 | $28.05 | $27.99 | $28.01 | $-0.06 | -0.20% | 6,918 | $28.02 | $27.99 $28.05 |
| Sep 9, 2026 | $28.10 | $28.10 | $28.03 | $28.07 | $-0.05 | -0.17% | 9,850 | $28.07 | $28.03 $28.10 |
| Sep 8, 2026 | $28.20 | $28.26 | $28.09 | $28.12 | $-0.01 | -0.05% | 17,966 | $28.15 | $28.09 $28.26 |
| Sep 4, 2026 | $28.18 | $28.18 | $28.11 | $28.13 | $-0.05 | -0.16% | 13,444 | $28.14 | $28.11 $28.18 |
| Sep 3, 2026 | $28.14 | $28.25 | $28.11 | $28.18 | +$0.08 | +0.29% | 24,620 | $28.17 | $28.11 $28.25 |
| Sep 2, 2026 | $28.09 | $28.11 | $28.04 | $28.10 | +$0.02 | +0.08% | 25,874 | $28.09 | $28.04 $28.11 |
| Sep 1, 2026 | $28.00 | $28.10 | $27.98 | $28.07 | $-0.05 | -0.19% | 102,596 | $28.07 | $27.98 $28.10 |
| Aug 31, 2026 | $28.13 | $28.13 | $28.07 | $28.13 | +$0.03 | +0.09% | 7,233 | $28.11 | $28.07 $28.13 |
| Aug 28, 2026 | $28.10 | $28.13 | $28.07 | $28.10 | +$0.01 | +0.05% | 5,398 | $28.09 | $28.07 $28.13 |
| Aug 27, 2026 | $28.10 | $28.10 | $28.09 | $28.09 | +$0.01 | +0.02% | 458 | $28.10 | $28.09 $28.10 |
| Aug 26, 2026 | $28.08 | $28.08 | $28.08 | $28.08 | +$0.01 | +0.03% | 88 | $28.08 | $28.08 $28.08 |
| Aug 25, 2026 | $28.08 | $28.12 | $28.07 | $28.07 | +$0.02 | +0.05% | 1,692 | $28.09 | $28.07 $28.12 |
| Aug 24, 2026 | $28.06 | $28.06 | $28.06 | $28.06 | +$0.00 | +0.00% | 9 | $28.05 | $28.06 $28.06 |
| Aug 21, 2026 | $28.08 | $28.08 | $28.06 | $28.06 | +$0.01 | +0.02% | 107 | $28.08 | $28.06 $28.08 |