ProtoSource Corporation (PSCO)
OTCMKTS · Delayed Price · Currency is USD
0.0090
0.00 (0.00%)
At close: Jul 20, 2026

ProtoSource Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Jul 20, 20260.010.010.010.010.01-18,500
Jul 13, 20260.010.010.010.010.01-300
Jul 10, 20260.010.010.010.010.01-28.57%73,530
Jul 7, 20260.010.010.010.010.0120.00%200
Jun 22, 20260.020.020.010.010.01-35.19%11,000
Jun 11, 20260.010.020.010.020.02-56,000
Jun 10, 20260.020.020.020.020.02-20.20%11,045
Jun 4, 20260.020.020.020.020.0216.00%60,522
May 26, 20260.020.020.020.020.028.02%8,000
May 19, 20260.020.020.020.020.02-22.86%26,000
May 14, 20260.020.020.020.020.023.45%1,702
May 13, 20260.020.020.020.020.02-220
May 12, 20260.020.020.020.020.02-3.33%500
May 11, 20260.020.020.020.020.023.45%8,298
May 8, 20260.020.020.020.020.02-400
Apr 30, 20260.040.040.020.020.02-2,150
Apr 21, 20260.020.020.020.020.02-21.92%39,300
Apr 20, 20260.030.030.030.030.03-49.81%800
Apr 15, 20260.050.050.050.050.05213.94%10,000
Apr 6, 20260.020.020.020.020.021.85%3,666
Feb 26, 20260.020.020.020.020.02-35.71%7,991
Feb 25, 20260.030.030.030.030.0355.56%500
Feb 10, 20260.020.020.020.020.02-71.28%1,200
Feb 6, 20260.030.060.030.060.06123.81%1,200
Feb 4, 20260.080.080.030.030.03-67.27%3,270
Feb 3, 20260.080.080.080.080.0813.24%371
Jan 30, 20260.070.070.070.070.07547.62%82,728