NASDAQ:CSPI | Stock Price History | CSP INC /MA/

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1982-01-29 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$1.18$2.32$4.56$8.97$17.61$34.601982-01-292026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$8.1947
2026-09-03$8.136
2026-09-02$8.17226
2026-09-01$8.08212
2026-08-31$8.15138
2026-08-28$7.7651
2026-08-27$7.88$12.9212,900$7.7331
2026-08-26$7.90$12.959,600$7.73296
2026-08-25$7.50$12.307,600$7.7525
2026-08-24$7.53$12.3516,100$7.563
2026-08-21$7.56$12.408,200$7.5313
2026-08-20$7.43$12.188,500$7.4772
2026-08-19$7.54$12.3631,700$7.25142
2026-08-18$7.29$11.9512,400$7.78425
2026-08-17$7.90$12.954,800$7.912
2026-08-14$8.05$13.2037,300$7.97213
2026-08-13$8.36$13.718,500$8.50126
2026-08-12$8.27$13.564,600$8.28101
2026-08-11$8.40$13.7713,000$8.116
2026-08-10$8.10$13.2814,300$8.45113
2026-08-07$8.15$13.365,400
2026-08-06$8.26$13.549,800$8.1450
2026-08-05$8.12$13.313,800$8.19185
2026-08-04$8.34$13.675,600$8.133
2026-08-03$8.17$13.4018,100$8.24337
2026-07-31$7.91$12.9715,400$7.87305
2026-07-30$7.86$12.8913,400$7.82392
2026-07-29$7.91$12.974,700
2026-07-28$8.13$13.335,400$7.89199
2026-07-27$8.00$13.124,300$8.00121
2026-07-24$7.95$13.0317,700$8.04258
2026-07-23$7.87$12.9018,100$7.82210
2026-07-22$8.01$13.1327,500$8.16105
2026-07-21$7.83$12.8410,300$8.04173
2026-07-20$7.96$13.057,000$8.28266
2026-07-17$8.16$13.3811,100
2026-07-16$8.21$13.468,900
2026-07-15$8.22$13.488,500
2026-07-14$8.14$13.3535,500
2026-07-13$8.27$13.5612,300
2026-07-10$8.70$14.266,600
2026-07-09$8.76$14.369,000
2026-07-08$8.64$14.1720,800
2026-07-07$8.23$13.4912,400
2026-07-06$8.23$13.4925,300
2026-07-02$8.23$13.4926,100
2026-07-01$8.17$13.4033,200
2026-06-30$7.94$13.02104,400
2026-06-29$7.90$12.95113,400
2026-06-26$8.05$13.20742,300
2026-06-25$8.76$14.3673,000
2026-06-24$9.15$15.0047,800
2026-06-23$8.71$14.2840,200
2026-06-22$8.51$13.9533,600
2026-06-18$8.50$13.9446,500
2026-06-17$8.56$14.0355,800
2026-06-16$9.34$15.3119,600
2026-06-15$9.42$15.4517,700
2026-06-12$9.26$15.1818,900
2026-06-11$9.08$14.8925,200
2026-06-10$8.59$14.0823,000
2026-06-09$8.21$13.4683,800
2026-06-08$8.30$13.6148,400
2026-06-05$8.90$14.5914,800
2026-06-04$9.30$15.2517,700
2026-06-03$9.18$15.0523,300
2026-06-02$9.68$15.879,800
2026-06-01$9.89$16.2214,200
2026-05-29$9.89$16.2222,300
2026-05-28$9.72$15.9415,100
2026-05-27$9.54$15.6412,300
2026-05-26$9.74$15.9722,900
2026-05-22$9.78$16.0414,900
2026-05-21$9.42$15.4513,000
2026-05-20$9.42$15.409,700
2026-05-19$9.45$15.449,000
2026-05-18$9.44$15.4312,400
2026-05-15$9.30$15.2013,100
2026-05-14$9.65$15.7714,600
2026-05-13$9.28$15.1718,500
2026-05-12$9.16$14.9715,100
2026-05-11$9.06$14.8112,800
2026-05-08$9.17$14.9912,500
2026-05-07$9.32$15.2316,900
2026-05-06$9.19$15.027,900
2026-05-05$9.43$15.4112,300
2026-05-04$9.08$14.8412,600
2026-05-01$9.33$15.2514,400
2026-04-30$9.29$15.1826,500
2026-04-29$10.35$16.9215,100
2026-04-28$10.29$16.829,100
2026-04-27$10.16$16.617,500
2026-04-24$10.20$16.679,400
2026-04-23$9.59$15.678,900
2026-04-22$9.22$15.078,400
2026-04-21$9.21$15.0510,400
2026-04-20$9.28$15.1711,500
2026-04-17$9.06$14.8113,600
2026-04-16$9.08$14.8411,600
2026-04-15$8.99$14.699,800