Calamos S&P 500 Structured Alt Protection ETF - October (CPSO)
NYSEARCA: CPSO · Real-Time Price · USD
27.78
-0.05 (-0.18%)
Jun 17, 2026, 4:00 PM EDT - Market closed

CPSO Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jun 17, 202627.8627.8627.7827.7827.78-0.18%1,624
Jun 16, 202627.8327.8327.8327.8327.83-0.02%72
Jun 15, 202627.8027.8427.8027.8427.840.24%1,001
Jun 12, 202627.7827.8027.7727.7727.770.09%207
Jun 11, 202627.7227.7527.7227.7527.750.22%164
Jun 10, 202627.6927.6927.6927.6927.68-0.18%27
Jun 9, 202627.7327.7327.7327.7327.73-0.04%25
Jun 8, 202627.7527.7527.7527.7527.750.04%30
Jun 5, 202627.7727.7727.7427.7427.74-0.25%324
Jun 4, 202627.8327.8327.8127.8127.810.02%1,000
Jun 3, 202627.8027.8327.8027.8027.80-0.02%1,327
Jun 2, 202627.8427.8427.8127.8127.810.02%806
Jun 1, 202627.7827.8027.7827.8027.800.02%300
May 29, 202627.7727.8027.7627.8027.800.05%5,191
May 28, 202627.7827.7827.7827.7827.780.06%-
May 27, 202627.7727.7727.7327.7627.760.03%409
May 26, 202627.7627.7627.7627.7627.760.13%-
May 22, 202627.7327.7427.7227.7227.720.03%6,323
May 21, 202627.7027.7127.7027.7127.710.06%182
May 20, 202627.7027.7027.7027.7027.690.11%117
May 19, 202627.6327.6727.6327.6727.67-0.04%287
May 18, 202627.6527.6827.6427.6827.680.02%230
May 15, 202627.6527.6727.6527.6727.67-0.11%1,025
May 14, 202627.7027.7027.7027.7027.700.08%622
May 13, 202627.6827.6827.6827.6827.680.03%424
May 12, 202627.6527.6727.6527.6727.670.09%1,184
May 11, 202627.6427.6527.6427.6527.650.02%795
May 8, 202627.6427.6427.6427.6427.640.11%8
May 7, 202627.6127.6127.6127.6127.61-0.07%79
May 6, 202627.6327.6327.6327.6327.630.13%623
May 5, 202627.5527.6027.5527.6027.600.22%1,869
May 4, 202627.5627.5627.5427.5427.54-0.16%1,086
May 1, 202627.5627.5827.5627.5827.580.05%2,422
Apr 30, 202627.5027.5727.5027.5727.570.27%429
Apr 29, 202627.4827.5027.4827.4927.49-0.09%11,499
Apr 28, 202627.4727.5227.4727.5227.520.04%228
Apr 27, 202627.5127.5127.5127.5127.51-0.07%-
Apr 24, 202627.5227.5227.5227.5227.520.24%107
Apr 23, 202627.4627.4627.4627.4627.46-0.12%88
Apr 22, 202627.4727.4927.4627.4927.490.15%1,667
Apr 21, 202627.4927.4927.4527.4527.45-0.09%5,915
Apr 20, 202627.4427.4827.4427.4827.48-0.05%1,580
Apr 17, 202627.4627.4927.4527.4927.490.27%821
Apr 16, 202627.4227.4227.4227.4227.420.02%66
Apr 15, 202627.4127.4127.4127.4127.410.13%2
Apr 14, 202627.3827.3827.3827.3827.380.26%156
Apr 13, 202627.2627.3327.2627.3127.310.15%494
Apr 10, 202627.2727.2727.2727.2727.27-5
Apr 9, 202627.2727.2727.2727.2727.270.16%60
Apr 8, 202627.1827.2227.1827.2227.220.58%3,086