Calamos S&P 500 Structured Alt Protection ETF - October (CPSO)
NYSEARCA: CPSO · Real-Time Price · USD
28.25
+0.01 (0.04%)
Sep 4, 2026, 4:00 PM EDT - Market closed

CPSO Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Sep 4, 202628.2528.2528.2528.2528.250.04%199
Sep 3, 202628.1928.2628.1928.2428.240.07%1,234
Sep 2, 202628.2228.2228.2228.2228.220.07%38
Sep 1, 202628.2128.2128.2028.2028.20-0.04%250
Aug 31, 202628.2528.2528.2028.2128.21-5,513
Aug 28, 202628.2128.2128.2128.2128.210.02%183
Aug 27, 202628.2028.2028.2028.2028.200.05%198
Aug 26, 202628.1928.1928.1928.1928.190.09%99
Aug 25, 202628.1828.1828.1528.1728.170.04%947
Aug 24, 202628.1528.1628.1528.1628.16-4,011
Aug 21, 202628.1528.1528.1528.1528.150.09%7
Aug 20, 202628.1328.1328.1328.1328.13-0.06%9
Aug 19, 202628.1528.1528.1528.1528.15-0.02%36
Aug 18, 202628.1228.1928.1228.1528.15-1,712
Aug 17, 202628.1128.1728.1128.1528.150.03%1,284
Aug 14, 202628.1428.1428.1428.1428.140.04%7
Aug 13, 202628.1328.1328.1328.1328.13-0.03%10
Aug 12, 202628.1728.1728.1028.1428.140.12%1,523
Aug 11, 202628.1128.1128.1128.1128.11-0.05%337
Aug 10, 202628.1328.1328.1228.1228.12-0.02%107
Aug 7, 202628.1228.1328.0928.1328.130.09%3,409
Aug 6, 202628.1028.1028.1028.1028.10-7
Aug 5, 202628.1428.1528.1028.1028.100.04%5,559
Aug 4, 202628.1328.1328.0928.0928.090.11%4,318
Aug 3, 202628.0428.0628.0428.0628.060.12%506
Jul 31, 202627.9828.0327.9828.0328.030.17%2,701
Jul 30, 202627.9827.9827.8627.9827.980.42%5,668
Jul 29, 202627.9427.9627.8627.8627.86-0.36%4,088
Jul 28, 202627.9727.9727.9727.9727.970.13%563
Jul 27, 202627.9327.9327.9327.9327.930.05%63
Jul 24, 202627.9227.9227.9227.9227.920.07%6
Jul 23, 202627.9027.9027.9027.9027.90-0.23%96
Jul 22, 202627.9727.9727.9427.9627.960.02%12,099
Jul 21, 202627.9527.9527.9527.9527.950.12%130
Jul 20, 202627.9527.9527.9227.9227.92-1,345
Jul 17, 202627.9227.9227.9227.9227.92-0.09%76
Jul 16, 202627.9827.9827.9527.9527.95-0.04%402
Jul 15, 202627.9627.9627.9627.9627.960.05%32
Jul 14, 202627.9327.9427.9327.9427.940.04%1,577
Jul 13, 202627.9427.9427.9327.9327.93-0.11%190
Jul 10, 202627.9627.9627.9627.9627.960.07%42
Jul 9, 202627.8827.9427.8827.9427.940.19%1,138
Jul 8, 202627.8627.8927.8627.8927.89-0.01%212
Jul 7, 202627.9027.9127.8927.8927.89-0.02%1,106
Jul 6, 202627.9027.9227.9027.9027.900.13%1,444
Jul 2, 202627.8627.8627.8627.8627.860.03%7
Jul 1, 202627.8527.8527.8527.8527.850.04%7
Jun 30, 202627.8427.8427.8427.8427.840.14%7
Jun 29, 202627.8227.8227.8027.8027.800.11%191
Jun 26, 202627.7727.7727.7727.7727.770.06%122