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Calamos S&P 500 Structured Alt Protection ETF - October (CPSO)
NYSEARCA: CPSO · Real-Time Price · USD
27.00
+0.02 (0.08%)
At close: Dec 5, 2025, 4:00 PM EST
27.00
0.00 (0.00%)
After-hours: Dec 5, 2025, 8:00 PM EST

CPSO Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Dec 5, 202527.0127.0526.9827.0027.000.08%2,102
Dec 4, 202526.9827.0026.9526.9826.98-0.04%2,732
Dec 3, 202526.9926.9926.9926.9926.990.15%-
Dec 2, 202526.9826.9826.9526.9526.95-0.02%685
Dec 1, 202526.9926.9926.9426.9626.960.02%3,481
Nov 28, 202526.9626.9726.9526.9526.950.09%222
Nov 26, 202526.9326.9326.9326.9326.930.09%114
Nov 25, 202526.8926.9026.8926.9026.900.13%189
Nov 24, 202526.8426.8726.8426.8726.870.26%1,117
Nov 21, 202526.8226.8426.8026.8026.790.24%1,130
Nov 20, 202526.8626.9026.7326.7326.73-0.24%7,133
Nov 19, 202526.8126.8126.8026.8026.80-0.09%756
Nov 18, 202526.8226.8326.7926.8226.820.01%40,709
Nov 17, 202526.8326.8826.8226.8226.82-0.05%3,123
Nov 14, 202526.8726.8726.8326.8326.830.02%1,656
Nov 13, 202526.8326.8626.8226.8326.82-0.33%2,654
Nov 12, 202526.9326.9326.9226.9226.92-0.04%4,519
Nov 11, 202526.9326.9626.8926.9326.920.09%8,179
Nov 10, 202526.9026.9026.9026.9026.900.19%92
Nov 7, 202526.8426.8526.8226.8526.850.01%4,795
Nov 6, 202526.8426.8826.8426.8526.85-0.26%4,834
Nov 5, 202526.9226.9326.9026.9226.920.17%4,373
Nov 4, 202526.8526.8826.8526.8726.87-0.16%729
Nov 3, 202526.9026.9626.8826.9126.91-0.01%5,922
Oct 31, 202526.8826.9526.8826.9226.920.07%2,251
Oct 30, 202526.8826.9026.8826.9026.90-0.11%168
Oct 29, 202526.9626.9826.9026.9326.92-0.13%1,315
Oct 28, 202526.9726.9926.9626.9626.96-0.04%6,384
Oct 27, 202526.9626.9926.9626.9726.970.22%7,131
Oct 24, 202526.9326.9526.8826.9126.91-13,835
Oct 23, 202526.9026.9326.8226.9126.910.20%25,122
Oct 22, 202526.9126.9126.8226.8626.86-0.10%31,515
Oct 21, 202526.9126.9126.8426.8826.880.03%12,351
Oct 20, 202526.9526.9526.8726.8726.870.18%3,519
Oct 17, 202526.8226.8726.8226.8326.830.07%21,839
Oct 16, 202526.8526.8526.7526.8126.81-0.06%11,461
Oct 15, 202526.9026.9026.7926.8226.820.03%14,558
Oct 14, 202526.7626.8526.7626.8226.81-0.04%70,734
Oct 13, 202526.7926.8326.7926.8326.830.13%3,330
Oct 10, 202526.8826.8826.7826.7926.79-0.19%9,137
Oct 9, 202527.0027.0026.8426.8426.84-0.06%2,099
Oct 8, 202526.8426.8726.8426.8626.860.09%12,389
Oct 7, 202526.8526.8526.8326.8326.83-0.14%4,513
Oct 6, 202526.8626.8726.8526.8726.870.13%12,586
Oct 3, 202526.8626.8826.8426.8426.84-0.01%19,956
Oct 2, 202526.8126.8526.8026.8426.84-0.04%25,379
Oct 1, 202526.8126.9826.8026.8526.850.19%117,126
Sep 30, 202526.7726.8126.7526.8026.800.12%14,353
Sep 29, 202526.7626.7826.7626.7726.770.04%6,071
Sep 26, 202526.7626.7626.7626.7626.76-140
Sep 25, 202526.7526.7626.7526.7626.76-0.02%1,433
Sep 24, 202526.7426.7626.7426.7626.760.04%131
Sep 23, 202526.7526.7526.7526.7526.750.02%-
Sep 22, 202526.7426.7526.7326.7526.75-1,300
Sep 19, 202526.7526.7526.7526.7526.750.02%-
Sep 18, 202526.7326.7426.7226.7426.740.04%338
Sep 17, 202526.7326.7326.7326.7326.73--
Sep 16, 202526.7326.7326.7326.7326.73--
Sep 15, 202526.7326.7326.7326.7326.73--
Sep 12, 202526.7326.7326.7326.7326.730.05%-
Sep 11, 202526.6926.7226.6926.7226.720.04%1,504
Sep 10, 202526.6826.7126.6826.7126.710.04%196
Sep 9, 202526.6926.6926.6926.6926.690.03%-
Sep 8, 202526.6626.6926.6626.6926.690.02%210
Sep 5, 202526.6726.6826.6426.6826.680.05%824
Sep 4, 202526.6726.6726.6726.6726.670.09%-
Sep 3, 202526.6026.6426.6026.6426.640.12%167
Sep 2, 202526.6126.6126.6126.6126.61-0.11%-
Aug 29, 202526.6426.6426.6426.6426.64-0.03%-
Aug 28, 202526.6226.6526.6226.6526.650.06%425
Aug 27, 202526.6326.6326.6326.6326.630.06%-
Aug 26, 202526.6226.6226.5726.6226.620.03%270
Aug 25, 202526.6126.6126.6126.6126.610.01%-
Aug 22, 202526.5326.6126.5326.6126.610.28%174
Aug 21, 202526.5026.5326.5026.5326.53-0.07%484
Aug 20, 202526.5126.5726.5126.5526.55-1,077
Aug 19, 202526.5426.5526.5326.5526.55-0.08%402
Aug 18, 202526.5326.6226.5326.5726.570.04%37,647
Aug 15, 202526.5326.5626.5326.5626.560.11%127
Aug 14, 202526.5226.5326.5226.5326.53-0.11%321
Aug 13, 202526.5626.5626.5226.5626.560.04%4,308
Aug 12, 202526.5026.5526.5026.5526.550.29%2,065
Aug 11, 202526.4826.4826.4726.4726.47-0.04%848
Aug 8, 202526.4826.4826.4826.4826.480.09%1
Aug 7, 202526.4626.4626.4626.4626.46-0.01%-
Aug 6, 202526.4626.4626.4626.4626.460.16%896
Aug 5, 202526.4226.4226.4226.4226.42-0.06%1,720
Aug 4, 202526.4426.4426.4426.4426.440.30%1,973
Aug 1, 202526.3626.3626.3626.3626.36-0.25%1,993
Jul 31, 202526.4326.4426.4026.4226.42-0.07%5,323
Jul 30, 202526.4326.4826.4026.4426.44-0.02%4,322
Jul 29, 202526.4926.4926.4426.4426.44-0.03%130
Jul 28, 202526.4526.4526.4526.4526.450.02%-
Jul 25, 202526.4526.4526.4526.4526.450.10%1
Jul 24, 202526.4226.4226.4226.4226.420.05%1
Jul 23, 202526.3826.4326.3826.4126.410.11%471
Jul 22, 202526.3926.4026.3326.3826.370.06%3,908
Jul 21, 202526.3826.4126.3626.3626.36-6,328
Jul 18, 202526.3526.3826.3526.3626.360.08%9,531
Jul 17, 202526.3426.3726.3426.3426.340.11%5,597