NASDAQ:CSPI | Historical Stock Price | 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.

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Historical Stock Price — 2018

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2018-12-31$4.91$7.176,000
2018-12-28$4.86$7.1126,200
2018-12-27$4.58$6.6944,200
2018-12-26$5.09$7.4429,800
2018-12-24$5.09$7.4419,000
2018-12-21$5.18$7.5715,600
2018-12-20$5.02$7.3425,400
2018-12-19$5.29$7.734,400
2018-12-18$5.20$7.602,200
2018-12-17$5.36$7.836,200
2018-12-14$5.20$7.6029,200
2018-12-13$5.83$8.526,000
2018-12-12$5.89$8.609,600
2018-12-11$5.96$8.7124,200
2018-12-10$6.22$9.092,200
2018-12-07$5.88$8.593,600
2018-12-06$5.78$8.444,200
2018-12-04$6.14$8.971,800
2018-12-03$5.97$8.721,600
2018-11-30$5.76$8.413,400
2018-11-29$6.01$8.782,200
2018-11-28$5.84$8.541,000
2018-11-27$6.03$8.81800
2018-11-26$5.88$8.5911,200
2018-11-23$5.78$8.455,000
2018-11-21$5.67$8.296,600
2018-11-20$5.58$8.154,600
2018-11-19$5.35$7.825,800
2018-11-16$5.17$7.558,800
2018-11-15$5.19$7.5877,600
2018-11-14$5.30$7.7517,000
2018-11-13$5.98$8.7437,600
2018-11-12$5.80$8.479,800
2018-11-09$5.81$8.4913,400
2018-11-08$6.17$9.0212,800
2018-11-07$6.05$8.8512,000
2018-11-06$5.77$8.4416,600
2018-11-05$5.95$8.7013,000
2018-11-02$5.98$8.745,600
2018-11-01$6.00$8.7713,800
2018-10-31$6.40$9.363,800
2018-10-30$6.53$9.541,200
2018-10-29$6.59$9.630
2018-10-26$6.59$9.63200
2018-10-25$6.59$9.632,800
2018-10-24$6.64$9.701,400
2018-10-23$6.58$9.612,600
2018-10-22$6.55$9.585,400
2018-10-19$6.53$9.55200
2018-10-18$6.54$9.56400
2018-10-17$6.70$9.801,200
2018-10-16$6.65$9.724,000
2018-10-15$6.55$9.581,200
2018-10-12$6.60$9.652,200
2018-10-11$6.60$9.652,400
2018-10-10$6.61$9.663,800
2018-10-09$6.59$9.641,200
2018-10-08$6.58$9.621,000
2018-10-05$6.70$9.79600
2018-10-04$6.71$9.801,600
2018-10-03$6.63$9.696,000
2018-10-02$6.72$9.83600
2018-10-01$6.69$9.779,800
2018-09-28$6.56$9.594,200
2018-09-27$6.74$9.863,200
2018-09-26$6.82$9.970
2018-09-25$6.82$9.973,600
2018-09-24$6.60$9.654,000
2018-09-21$6.83$9.9817,000
2018-09-20$6.64$9.7117,200
2018-09-19$6.65$9.727,800
2018-09-18$6.92$10.129,600
2018-09-17$6.58$9.6211,200
2018-09-14$6.58$9.614,200
2018-09-13$6.53$9.541,000
2018-09-12$6.58$9.616,200
2018-09-11$6.62$9.671,200
2018-09-10$6.75$9.877,000
2018-09-07$6.93$10.137,600
2018-09-06$6.81$9.954,400
2018-09-05$6.75$9.873,400
2018-09-04$6.76$9.886,800
2018-08-31$6.62$9.6715,800
2018-08-30$6.75$9.872,400
2018-08-29$6.83$9.8717,800
2018-08-28$7.36$10.6431,000
2018-08-27$6.28$9.0740,800
2018-08-24$5.98$8.6451,600
2018-08-23$5.78$8.3514,400
2018-08-22$5.75$8.3218,200
2018-08-21$5.84$8.444,000
2018-08-20$5.79$8.376,600
2018-08-17$5.85$8.4534,800
2018-08-16$5.64$8.1614,200
2018-08-15$5.63$8.1326,200
2018-08-14$5.43$7.8516,600
2018-08-13$5.41$7.8263,000
2018-08-10$5.33$7.703,200
2018-08-09$5.33$7.706,800
2018-08-08$5.33$7.707,000
2018-08-07$5.31$7.677,000
2018-08-06$5.40$7.806,600
2018-08-03$5.55$8.03800
2018-08-02$5.60$8.093,000
2018-08-01$5.29$7.6516,200
2018-07-31$5.40$7.817,800
2018-07-30$5.49$7.940
2018-07-27$5.49$7.942,400
2018-07-26$5.74$8.293,000
2018-07-25$5.27$7.623,400
2018-07-24$5.26$7.601,000
2018-07-23$5.24$7.583,000
2018-07-20$5.28$7.6315,000
2018-07-19$5.23$7.565,000
2018-07-18$5.23$7.5610,400
2018-07-17$5.45$7.8811,800
2018-07-16$5.24$7.576,200
2018-07-13$5.13$7.4217,200
2018-07-12$5.05$7.302,800
2018-07-11$4.96$7.173,200
2018-07-10$4.98$7.1923,000
2018-07-09$4.99$7.21800
2018-07-06$4.98$7.19400
2018-07-05$4.91$7.091,600
2018-07-03$4.94$7.1410,800
2018-07-02$4.86$7.033,200
2018-06-29$4.93$7.126,000
2018-06-28$4.81$6.963,800
2018-06-27$4.91$7.1010,000
2018-06-26$4.81$6.9616,200
2018-06-25$4.87$7.042,400
2018-06-22$4.85$7.0127,800
2018-06-21$4.83$6.982,800
2018-06-20$4.86$7.02400
2018-06-19$4.83$6.982,200
2018-06-18$4.81$6.953,400
2018-06-15$4.81$6.963,400
2018-06-14$4.78$6.911,000
2018-06-13$4.80$6.9315,600
2018-06-12$4.78$6.914,000
2018-06-11$4.74$6.853,600
2018-06-08$4.75$6.876,000
2018-06-07$4.73$6.834,400
2018-06-06$4.71$6.806,000
2018-06-05$4.76$6.883,400
2018-06-04$4.81$6.953,600
2018-06-01$4.82$6.978,000
2018-05-31$4.81$6.953,200
2018-05-30$4.78$6.9113,000
2018-05-29$4.88$6.9812,200
2018-05-25$4.96$7.086,400
2018-05-24$4.98$7.1127,200
2018-05-23$4.80$6.8622,400
2018-05-22$4.78$6.831,600
2018-05-21$4.98$7.1117,200
2018-05-18$4.71$6.7349,600
2018-05-17$4.82$6.883,600
2018-05-16$4.78$6.8319,600
2018-05-15$4.78$6.8315,200
2018-05-14$4.84$6.919,000
2018-05-11$4.98$7.1175,400
2018-05-10$4.77$6.8270,600
2018-05-09$4.88$6.9774,600
2018-05-08$5.46$7.806,800
2018-05-07$5.50$7.8617,600
2018-05-04$5.39$7.7089,000
2018-05-03$5.37$7.68105,400
2018-05-02$5.40$7.7111,200
2018-05-01$5.50$7.8626,600
2018-04-30$5.60$8.011,200
2018-04-27$5.45$7.799,800
2018-04-26$5.63$8.0580,600
2018-04-25$5.58$7.9792,200
2018-04-24$5.47$7.81400
2018-04-23$5.48$7.839,400
2018-04-20$5.73$8.1920,800
2018-04-19$5.51$7.872,800
2018-04-18$5.50$7.869,600
2018-04-17$5.55$7.945,800
2018-04-16$5.77$8.2511,800
2018-04-13$5.77$8.252,400
2018-04-12$5.85$8.365,000
2018-04-11$5.70$8.1581,000
2018-04-10$5.72$8.1897,600
2018-04-09$5.54$7.911,800
2018-04-06$5.79$8.28600
2018-04-05$5.79$8.2710,000
2018-04-04$5.77$8.24800
2018-04-03$5.58$7.9714,200
2018-04-02$5.38$7.6918,200
2018-03-29$5.38$7.6990,800
2018-03-28$5.56$7.94111,800
2018-03-27$6.02$8.6117,400
2018-03-26$5.98$8.5418,400
2018-03-23$6.05$8.655,200
2018-03-22$5.75$8.2298,400
2018-03-21$6.04$8.6367,200
2018-03-20$6.05$8.651,800
2018-03-19$5.83$8.3322,200
2018-03-16$5.80$8.2942,600
2018-03-15$6.05$8.6516,400
2018-03-14$6.17$8.816,400
2018-03-13$6.17$8.827,000
2018-03-12$6.29$8.9913,600
2018-03-09$6.24$8.915,200
2018-03-08$6.20$8.8616,000
2018-03-07$6.00$8.5827,000
2018-03-06$6.03$8.6111,400
2018-03-05$6.14$8.7732,800
2018-03-02$6.05$8.6513,400
2018-03-01$6.01$8.5920,000
2018-02-28$5.87$8.3917,600
2018-02-27$6.10$8.7216,200
2018-02-26$6.11$8.6616,600
2018-02-23$6.21$8.794,800
2018-02-22$6.35$8.9918,800
2018-02-21$6.10$8.6436,200
2018-02-20$6.05$8.5733,600
2018-02-16$6.25$8.8616,800
2018-02-15$6.46$9.1531,200
2018-02-14$6.54$9.2670,600
2018-02-13$6.36$9.01122,000
2018-02-12$6.48$9.1894,800
2018-02-09$7.53$10.6614,400
2018-02-08$7.95$11.2622,200
2018-02-07$7.88$11.1615,800
2018-02-06$7.64$10.8215,800
2018-02-05$8.07$11.4355,600
2018-02-02$7.91$11.2063,400
2018-02-01$8.88$12.5820,200
2018-01-31$8.75$12.4019,400
2018-01-30$9.18$13.0125,800
2018-01-29$9.25$13.1034,400
2018-01-26$9.19$13.012,600
2018-01-25$9.27$13.1332,400
2018-01-24$9.26$13.1215,600
2018-01-23$9.29$13.1622,600
2018-01-22$9.24$13.0989,400
2018-01-19$9.05$12.8258,600
2018-01-18$8.74$12.3847,000
2018-01-17$8.85$12.5340,200
2018-01-16$8.40$11.9049,200
2018-01-12$7.94$11.2453,800
2018-01-11$7.64$10.8312,000
2018-01-10$7.63$10.808,600
2018-01-09$7.63$10.8051,600
2018-01-08$7.54$10.6875,800
2018-01-05$7.17$10.1560,600
2018-01-04$7.25$10.2791,400
2018-01-03$7.03$9.9636,000
2018-01-02$7.50$10.6328,800