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 — 1983

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1983-12-30$4.51$4.5193,702
1983-12-29$4.60$4.6010,382
1983-12-28$4.60$4.603,194
1983-12-27$4.60$4.6018,368
1983-12-23$4.70$4.7010,914
1983-12-22$4.84$4.847,454
1983-12-21$4.88$4.88532
1983-12-20$4.88$4.8812,511
1983-12-19$4.88$4.883,461
1983-12-16$4.88$4.8824,490
1983-12-15$4.70$4.705,856
1983-12-14$4.79$4.7937,002
1983-12-13$4.88$4.8812,511
1983-12-12$5.17$5.1716,771
1983-12-09$5.26$5.2633,541
1983-12-08$5.54$5.541,597
1983-12-07$5.54$5.5421,296
1983-12-06$5.73$5.7318,102
1983-12-05$5.63$5.6315,972
1983-12-02$5.63$5.63532
1983-12-01$5.63$5.637,187
1983-11-30$5.73$5.735,856
1983-11-29$5.73$5.7314,375
1983-11-28$5.82$5.8220,497
1983-11-25$5.92$5.92266
1983-11-23$5.92$5.9214,375
1983-11-22$6.01$6.0119,965
1983-11-21$6.20$6.2034,074
1983-11-18$5.73$5.738,518
1983-11-17$5.73$5.7314,641
1983-11-16$5.54$5.5429,814
1983-11-15$5.54$5.543,727
1983-11-14$5.54$5.546,655
1983-11-11$5.35$5.351,065
1983-11-10$5.26$5.2627,419
1983-11-09$5.45$5.451,331
1983-11-08$5.45$5.456,389
1983-11-07$5.45$5.452,928
1983-11-04$5.35$5.352,662
1983-11-03$5.35$5.3523,159
1983-11-02$5.07$5.075,856
1983-11-01$4.98$4.9812,511
1983-10-31$4.88$4.888,252
1983-10-28$4.88$4.8810,648
1983-10-27$4.98$4.9827,685
1983-10-26$4.70$4.7031,944
1983-10-25$4.70$4.7068,946
1983-10-24$4.79$4.7911,180
1983-10-21$4.98$4.9816,238
1983-10-20$5.26$5.262,396
1983-10-19$5.26$5.2614,907
1983-10-18$5.45$5.4533,275
1983-10-17$5.54$5.546,655
1983-10-14$5.54$5.545,590
1983-10-13$5.73$5.734,259
1983-10-12$5.63$5.6327,951
1983-10-11$5.73$5.737,454
1983-10-10$5.54$5.5414,641
1983-10-07$5.54$5.541,065
1983-10-06$5.45$5.4514,109
1983-10-05$5.45$5.4529,016
1983-10-04$5.45$5.4511,180
1983-10-03$5.35$5.353,194
1983-09-30$5.35$5.353,727
1983-09-29$5.45$5.4515,440
1983-09-28$5.45$5.452,928
1983-09-27$5.45$5.455,856
1983-09-26$5.45$5.45266
1983-09-23$5.45$5.4514,375
1983-09-22$5.59$5.595,058
1983-09-21$5.73$5.734,259
1983-09-20$5.87$5.873,727
1983-09-19$5.87$5.871,597
1983-09-16$5.87$5.872,928
1983-09-15$5.82$5.828,252
1983-09-14$6.01$6.013,194
1983-09-13$5.96$5.9614,109
1983-09-12$5.92$5.9231,412
1983-09-09$6.20$6.206,921
1983-09-08$6.20$6.2016,504
1983-09-07$6.29$6.2913,044
1983-09-06$6.20$6.2011,713
1983-09-02$6.01$6.010
1983-09-01$6.01$6.011,331
1983-08-31$6.01$6.014,792
1983-08-30$6.10$6.101,065
1983-08-29$6.10$6.101,863
1983-08-26$6.10$6.107,720
1983-08-25$6.10$6.106,655
1983-08-24$6.10$6.1013,310
1983-08-23$6.39$6.3926,620
1983-08-22$6.20$6.200
1983-08-19$6.20$6.202,662
1983-08-18$6.20$6.2024,490
1983-08-17$6.57$6.5733,541
1983-08-16$6.29$6.2926,354
1983-08-15$6.29$6.2913,842
1983-08-12$6.20$6.2039,398
1983-08-11$5.54$5.5430,879
1983-08-10$5.45$5.455,324
1983-08-09$5.45$5.4514,109
1983-08-08$5.45$5.456,123
1983-08-05$5.45$5.453,727
1983-08-04$5.35$5.3522,627
1983-08-03$5.82$5.8213,842
1983-08-02$5.82$5.8214,375
1983-08-01$5.82$5.8212,245
1983-07-29$5.82$5.826,655
1983-07-28$6.29$6.290
1983-07-27$6.29$6.295,058
1983-07-26$6.39$6.399,317
1983-07-25$6.39$6.393,727
1983-07-22$6.39$6.3920,231
1983-07-21$6.29$6.2911,713
1983-07-20$6.48$6.4856,701
1983-07-19$6.29$6.2938,333
1983-07-18$6.01$6.014,259
1983-07-15$6.01$6.0113,310
1983-07-14$6.20$6.2055,902
1983-07-13$6.29$6.2931,678
1983-07-12$6.48$6.4838,599
1983-07-11$7.04$7.0410,914
1983-07-08$7.04$7.0461,758
1983-07-07$6.76$6.7677,730
1983-07-06$6.76$6.7636,469
1983-07-05$6.76$6.7618,900
1983-07-01$6.86$6.862,396
1983-06-30$6.86$6.86115,797
1983-06-29$6.39$6.3973,737
1983-06-28$6.01$6.0122,627
1983-06-27$6.10$6.1043,657
1983-06-24$6.20$6.2016,238
1983-06-23$6.10$6.1022,361
1983-06-22$6.10$6.109,317
1983-06-21$6.10$6.105,856
1983-06-20$6.10$6.1034,340
1983-06-17$6.29$6.2926,886
1983-06-16$6.29$6.29122,452
1983-06-15$5.82$5.8248,448
1983-06-14$5.73$5.7311,713
1983-06-13$5.73$5.73125,913
1983-06-10$5.26$5.2638,599
1983-06-09$5.26$5.2619,699
1983-06-08$5.26$5.263,194
1983-06-07$5.26$5.2695,832
1983-06-06$5.35$5.3532,743
1983-06-03$5.35$5.3528,750
1983-06-02$5.17$5.1719,699
1983-06-01$5.17$5.1740,462
1983-05-31$5.17$5.1710,382
1983-05-27$5.26$5.2610,116
1983-05-26$5.26$5.264,525
1983-05-25$5.26$5.26106,746
1983-05-24$5.17$5.177,720
1983-05-23$5.35$5.35125,380
1983-05-20$5.17$5.1713,842
1983-05-19$5.26$5.2630,613
1983-05-18$5.73$5.7323,692
1983-05-17$5.73$5.7374,536
1983-05-16$5.73$5.7334,606
1983-05-13$5.82$5.82164,778
1983-05-12$5.73$5.7377,730
1983-05-11$5.54$5.5432,476
1983-05-10$5.63$5.63122,718
1983-05-09$5.45$5.4554,837
1983-05-06$5.26$5.2659,895
1983-05-05$4.98$4.9821,828
1983-05-04$4.88$4.8834,872
1983-05-03$5.07$5.07211,895
1983-05-02$4.98$4.9837,002
1983-04-29$4.98$4.9839,664
1983-04-28$4.98$4.9866,284
1983-04-27$5.35$5.3548,448
1983-04-26$5.54$5.5422,361
1983-04-25$5.73$5.735,856
1983-04-22$5.82$5.8218,634
1983-04-21$5.78$5.7815,440
1983-04-20$6.01$6.0167,349
1983-04-19$5.73$5.7358,032
1983-04-18$5.92$5.9219,965
1983-04-15$5.92$5.9245,786
1983-04-14$5.63$5.6322,361
1983-04-13$6.20$6.2023,159
1983-04-12$6.10$6.108,518
1983-04-11$6.10$6.1011,979
1983-04-08$6.39$6.3931,944
1983-04-07$6.48$6.4843,391
1983-04-06$6.48$6.4862,291
1983-04-05$6.29$6.2921,562
1983-04-04$6.29$6.2962,291
1983-03-31$6.95$6.9535,405
1983-03-30$7.14$7.1448,981
1983-03-29$7.33$7.339,849
1983-03-28$7.33$7.3348,182
1983-03-25$7.61$7.6127,685
1983-03-24$7.79$7.7932,210
1983-03-23$7.98$7.9813,576
1983-03-22$8.08$8.0813,842
1983-03-21$8.08$8.08100,624
1983-03-18$7.61$7.61133,366
1983-03-17$7.51$7.5167,615
1983-03-16$7.51$7.5176,133
1983-03-15$7.51$7.5111,979
1983-03-14$7.42$7.4277,464
1983-03-11$7.89$7.8930,081
1983-03-10$8.08$8.0834,606
1983-03-09$8.17$8.175,856
1983-03-08$8.17$8.1722,095
1983-03-07$8.08$8.082,130
1983-03-04$8.17$8.175,856
1983-03-03$8.17$8.1715,440
1983-03-02$8.26$8.2636,469
1983-03-01$8.08$8.0811,713
1983-02-28$7.98$7.9837,534
1983-02-25$8.45$8.4535,405
1983-02-24$8.36$8.3622,893
1983-02-23$8.08$8.0862,557
1983-02-22$7.33$7.3313,842
1983-02-18$7.79$7.7940,729
1983-02-17$7.98$7.9848,715
1983-02-16$7.98$7.9835,671
1983-02-15$7.98$7.9823,159
1983-02-14$7.98$7.9815,972
1983-02-11$7.89$7.8911,979
1983-02-10$8.26$8.2629,548
1983-02-09$7.89$7.8914,641
1983-02-08$8.08$8.086,389
1983-02-07$8.45$8.4523,426
1983-02-04$8.64$8.6412,245
1983-02-03$8.73$8.73106,746
1983-02-02$8.55$8.55212,428
1983-02-01$8.36$8.36137,359
1983-01-31$8.26$8.2617,835
1983-01-28$7.89$7.8927,152
1983-01-27$8.08$8.0891,040
1983-01-26$7.14$7.1439,131
1983-01-25$7.23$7.2313,576
1983-01-24$7.23$7.2316,238
1983-01-21$7.51$7.5132,476
1983-01-20$7.61$7.6118,634
1983-01-19$7.70$7.7012,511
1983-01-18$7.61$7.6126,620
1983-01-17$7.70$7.7030,879
1983-01-14$7.42$7.426,389
1983-01-13$7.42$7.4242,858
1983-01-12$7.23$7.2345,786
1983-01-11$7.04$7.0423,692
1983-01-10$7.33$7.3324,490
1983-01-07$7.14$7.1458,032
1983-01-06$7.23$7.23114,466
1983-01-05$6.48$6.48138,158
1983-01-04$6.20$6.20135,762
1983-01-03$6.01$6.017,187