Skip to main content
Calamos S&P 500 Structured Alt Protection ETF - September (CPST)
NYSEARCA: CPST · Real-Time Price · USD
27.76
+0.03 (0.11%)
Jun 26, 2026, 4:00 PM EDT - Market closed

CPST Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jun 26, 202627.7627.7627.7627.7627.760.11%89
Jun 25, 202627.7427.7427.7227.7327.73-0.07%5,359
Jun 24, 202627.7527.7527.7527.7527.75-130
Jun 23, 202627.7527.7527.7527.7527.75-0.14%169
Jun 22, 202627.7627.7927.7627.7927.790.10%144
Jun 18, 202627.8127.8127.7527.7627.760.06%1,181
Jun 17, 202627.7827.7827.7527.7527.75-0.14%227
Jun 16, 202627.7527.8327.7527.7927.790.05%2,271
Jun 15, 202627.7727.7727.7727.7727.770.13%352
Jun 12, 202627.7627.7627.7427.7427.740.07%155
Jun 11, 202627.7427.7427.6727.7227.720.20%2,265
Jun 10, 202627.6627.7027.6227.6627.66-0.14%11,010
Jun 9, 202627.7027.7027.7027.7027.70-0.07%34
Jun 8, 202627.6927.7227.6927.7227.720.07%317
Jun 5, 202627.7227.7527.7027.7027.70-0.18%1,348
Jun 4, 202627.7527.7527.7527.7527.750.02%3
Jun 3, 202627.7527.7527.7527.7527.75-846
Jun 2, 202627.7427.7527.7427.7527.750.07%281
Jun 1, 202627.7327.7327.7327.7327.730.01%112
May 29, 202627.7227.7227.7227.7227.720.03%6
May 28, 202627.6827.7227.6827.7227.720.04%1,106
May 27, 202627.7027.7027.7027.7027.700.02%111
May 26, 202627.7027.7027.7027.7027.700.13%66
May 22, 202627.6727.6727.6727.6727.67-0.01%224
May 21, 202627.6727.6727.6727.6727.670.08%42
May 20, 202627.6127.6527.6127.6527.640.05%738
May 19, 202627.6627.6627.6327.6327.63-808
May 18, 202627.6127.6327.6027.6327.63-0.03%5,491
May 15, 202627.6127.6427.6127.6427.64-0.08%732
May 14, 202627.6627.6627.6627.6627.660.09%266
May 13, 202627.6427.6427.6427.6427.640.06%94
May 12, 202627.5727.6227.5627.6227.620.11%830
May 11, 202627.0727.6027.0727.5927.590.02%7,619
May 8, 202627.5727.5927.5727.5927.590.09%360
May 7, 202627.5627.5627.5627.5627.56-0.09%11,120
May 6, 202627.5627.5927.5627.5927.590.16%955
May 5, 202627.5227.5427.5127.5427.540.13%1,298
May 4, 202627.5127.5127.5127.5127.50-0.05%1,034
May 1, 202627.5327.5427.5127.5227.520.02%12,634
Apr 30, 202627.4727.5227.4727.5227.520.20%211
Apr 29, 202627.5027.5327.4427.4627.46-0.05%2,506
Apr 28, 202627.4827.4827.4827.4827.480.04%283
Apr 27, 202627.4727.4727.4727.4727.47-0.02%-
Apr 24, 202627.4727.4727.4727.4727.470.18%1
Apr 23, 202627.4227.4227.4227.4227.42-0.09%200
Apr 22, 202627.4327.4527.4327.4527.450.02%1,100
Apr 21, 202627.4427.4427.4427.4427.44-0.05%1
Apr 20, 202627.4627.4627.4627.4627.46-0.04%-
Apr 17, 202627.4027.4727.4027.4727.460.31%2,040
Apr 16, 202627.3627.4027.3627.3827.38-2,753
Apr 15, 202627.3827.3827.3827.3827.380.09%5
Apr 14, 202627.3627.3627.3627.3627.360.20%75
Apr 13, 202627.3027.3027.3027.3027.300.13%80
Apr 10, 202627.2327.2727.2327.2727.270.09%751
Apr 9, 202627.2427.2427.2427.2427.240.11%1,481
Apr 8, 202627.2027.2127.1927.2127.210.57%393
Apr 7, 202627.0527.0627.0227.0627.05-0.09%603
Apr 6, 202627.1027.1027.0327.0827.080.11%3,300
Apr 2, 202627.0127.0527.0127.0527.050.02%612
Apr 1, 202627.0527.0527.0527.0527.050.26%119
Mar 31, 202626.8727.0226.8726.9826.980.55%1,117
Mar 30, 202626.8526.8526.7926.8326.83-0.15%557
Mar 27, 202626.8826.8826.8426.8726.87-0.20%415
Mar 26, 202626.9626.9626.9326.9326.93-0.43%2,188
Mar 25, 202627.0327.0827.0327.0427.040.19%2,365
Mar 24, 202626.9927.0126.9926.9926.99-0.12%973
Mar 23, 202627.0227.0227.0227.0227.020.22%102
Mar 20, 202626.9626.9626.9626.9626.96-0.26%102
Mar 19, 202627.0027.0427.0027.0427.03-0.13%642
Mar 18, 202627.0627.0727.0627.0727.07-0.21%171
Mar 17, 202627.1327.1327.1327.1327.130.07%-
Mar 16, 202627.0727.1127.0727.1127.110.20%631
Mar 13, 202627.0527.0627.0527.0527.05-0.11%2,222
Mar 12, 202627.0527.0827.0527.0827.08-0.24%200
Mar 11, 202627.1227.1527.1127.1527.15-0.02%1,547
Mar 10, 202627.1027.1827.1027.1527.150.03%11,376
Mar 9, 202627.0527.1427.0527.1427.140.08%3,112
Mar 6, 202627.1027.1227.0927.1227.12-0.10%2,799
Mar 5, 202627.1427.1527.1127.1527.15-0.15%6,363
Mar 4, 202627.1927.1927.1627.1927.190.08%1,560
Mar 3, 202627.1727.1727.1727.1727.17-0.08%90
Mar 2, 202627.1327.2027.1327.1927.190.01%9,150
Feb 27, 202627.1927.1927.1927.1927.19-0.02%198
Feb 26, 202627.1727.1927.1627.1927.19-0.09%2,426
Feb 25, 202627.2127.2227.2127.2227.220.13%779
Feb 24, 202627.1127.1827.1127.1827.180.24%6,342
Feb 23, 202627.1227.1227.1127.1127.11-0.21%2,909
Feb 20, 202627.1827.1827.1527.1727.170.09%4,008
Feb 19, 202627.1327.1527.1327.1527.15-0.07%332
Feb 18, 202627.1527.1927.1527.1727.170.10%1,628
Feb 17, 202627.1427.1427.1427.1427.140.01%342
Feb 13, 202627.0727.1427.0727.1427.140.05%1,204
Feb 12, 202627.1527.1527.1227.1227.12-0.23%567
Feb 11, 202627.1727.1927.1527.1927.18-0.01%1,640
Feb 10, 202627.1727.2127.1627.1927.19-0.03%11,300
Feb 9, 202627.2127.2427.1727.2027.200.07%4,750
Feb 6, 202627.0927.1927.0927.1827.180.35%2,573
Feb 5, 202627.0827.1327.0427.0827.08-0.10%10,176
Feb 4, 202627.1727.1727.0827.1127.11-0.14%4,447
Feb 3, 202627.1327.1527.1027.1527.15-0.04%1,021