Calamos S&P 500 Structured Alt Protection ETF - September (CPST)

CPST Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
May 27, 2026	27.70	27.70	27.70	27.70	27.70	0.02%	111
May 26, 2026	27.70	27.70	27.70	27.70	27.70	0.13%	66
May 22, 2026	27.67	27.67	27.67	27.67	27.67	-0.01%	224
May 21, 2026	27.67	27.67	27.67	27.67	27.67	0.08%	42
May 20, 2026	27.61	27.65	27.61	27.65	27.64	0.05%	738
May 19, 2026	27.66	27.66	27.63	27.63	27.63	-	808
May 18, 2026	27.61	27.63	27.60	27.63	27.63	-0.03%	5,491
May 15, 2026	27.61	27.64	27.61	27.64	27.64	-0.08%	732
May 14, 2026	27.66	27.66	27.66	27.66	27.66	0.09%	266
May 13, 2026	27.64	27.64	27.64	27.64	27.64	0.06%	94
May 12, 2026	27.57	27.62	27.56	27.62	27.62	0.11%	830
May 11, 2026	27.07	27.60	27.07	27.59	27.59	0.02%	7,619
May 8, 2026	27.57	27.59	27.57	27.59	27.59	0.09%	360
May 7, 2026	27.56	27.56	27.56	27.56	27.56	-0.09%	11,120
May 6, 2026	27.56	27.59	27.56	27.59	27.59	0.16%	955
May 5, 2026	27.52	27.54	27.51	27.54	27.54	0.13%	1,298
May 4, 2026	27.51	27.51	27.51	27.51	27.50	-0.05%	1,034
May 1, 2026	27.53	27.54	27.51	27.52	27.52	0.02%	12,634
Apr 30, 2026	27.47	27.52	27.47	27.52	27.52	0.20%	211
Apr 29, 2026	27.50	27.53	27.44	27.46	27.46	-0.05%	2,506
Apr 28, 2026	27.48	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	0.55%	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%	-

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