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 — 1984

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1984-12-31$2.35$2.359,583
1984-12-28$2.39$2.393,194
1984-12-27$2.39$2.3949,513
1984-12-26$2.39$2.390
1984-12-24$2.39$2.39532
1984-12-21$2.35$2.356,921
1984-12-20$2.35$2.3533,009
1984-12-19$2.30$2.3040,196
1984-12-18$2.44$2.447,986
1984-12-17$2.44$2.441,863
1984-12-14$2.30$2.300
1984-12-13$2.30$2.306,123
1984-12-12$2.44$2.447,454
1984-12-11$2.35$2.3511,713
1984-12-10$2.35$2.3514,641
1984-12-07$2.30$2.303,194
1984-12-06$2.44$2.4448,981
1984-12-05$2.63$2.6310,382
1984-12-04$2.58$2.581,863
1984-12-03$2.72$2.7221,296
1984-11-30$2.72$2.723,461
1984-11-29$2.72$2.723,194
1984-11-28$2.77$2.774,259
1984-11-27$2.82$2.8238,599
1984-11-26$2.72$2.722,928
1984-11-23$2.72$2.7231,145
1984-11-21$2.82$2.82266
1984-11-20$3.01$3.010
1984-11-19$3.01$3.019,849
1984-11-16$3.01$3.0112,245
1984-11-15$3.19$3.191,597
1984-11-14$3.10$3.100
1984-11-13$3.10$3.104,259
1984-11-12$3.19$3.1919,166
1984-11-09$3.24$3.241,065
1984-11-08$3.24$3.24266
1984-11-07$3.24$3.2410,648
1984-11-06$3.38$3.386,655
1984-11-05$3.10$3.109,051
1984-11-02$3.29$3.29266
1984-11-01$3.19$3.198,785
1984-10-31$3.15$3.1513,310
1984-10-30$3.29$3.292,928
1984-10-29$3.29$3.290
1984-10-26$3.29$3.292,396
1984-10-25$3.29$3.29266
1984-10-24$3.33$3.334,792
1984-10-23$3.33$3.330
1984-10-22$3.33$3.332,662
1984-10-19$3.47$3.473,993
1984-10-18$3.33$3.3331,412
1984-10-17$3.38$3.3819,699
1984-10-16$3.38$3.380
1984-10-15$3.38$3.380
1984-10-12$3.38$3.3837,268
1984-10-11$3.33$3.335,324
1984-10-10$3.38$3.380
1984-10-09$3.38$3.388,785
1984-10-08$3.29$3.290
1984-10-05$3.29$3.290
1984-10-04$3.29$3.292,396
1984-10-03$3.29$3.2917,835
1984-10-02$3.05$3.05266
1984-10-01$3.01$3.01532
1984-09-28$3.05$3.052,396
1984-09-27$3.01$3.01532
1984-09-26$3.10$3.103,194
1984-09-25$3.01$3.019,051
1984-09-24$3.19$3.196,123
1984-09-21$3.01$3.011,331
1984-09-20$3.01$3.0119,166
1984-09-19$3.01$3.019,051
1984-09-18$3.01$3.0128,483
1984-09-17$2.72$2.7233,275
1984-09-14$2.72$2.725,856
1984-09-13$2.72$2.722,928
1984-09-12$2.77$2.771,065
1984-09-11$2.72$2.720
1984-09-10$2.72$2.721,331
1984-09-07$2.77$2.7715,173
1984-09-06$2.72$2.720
1984-09-05$2.72$2.721,597
1984-09-04$2.77$2.773,993
1984-08-31$2.82$2.820
1984-08-30$2.82$2.820
1984-08-29$2.82$2.8210,382
1984-08-28$2.91$2.91266
1984-08-27$2.96$2.962,662
1984-08-24$3.10$3.102,130
1984-08-23$2.91$2.9123,159
1984-08-22$2.63$2.6310,648
1984-08-21$2.63$2.63110,739
1984-08-20$2.44$2.440
1984-08-17$2.44$2.44217,752
1984-08-16$2.44$2.446,389
1984-08-15$2.54$2.541,331
1984-08-14$2.54$2.5463,089
1984-08-13$2.44$2.44532
1984-08-10$2.44$2.44532
1984-08-09$2.44$2.449,051
1984-08-08$2.63$2.637,986
1984-08-07$2.49$2.490
1984-08-06$2.49$2.49107,012
1984-08-03$2.54$2.543,194
1984-08-02$2.54$2.548,252
1984-08-01$2.44$2.446,123
1984-07-31$2.54$2.544,259
1984-07-30$2.68$2.680
1984-07-27$2.68$2.68799
1984-07-26$2.63$2.630
1984-07-25$2.63$2.6320,764
1984-07-24$2.63$2.6338,599
1984-07-23$2.63$2.635,856
1984-07-20$2.63$2.6345,786
1984-07-19$2.72$2.7217,303
1984-07-18$2.82$2.820
1984-07-17$2.82$2.823,461
1984-07-16$2.72$2.724,525
1984-07-13$2.77$2.7750,578
1984-07-12$2.72$2.720
1984-07-11$2.72$2.726,655
1984-07-10$2.63$2.6330,879
1984-07-09$2.72$2.723,993
1984-07-06$2.86$2.867,986
1984-07-05$2.86$2.860
1984-07-03$2.86$2.8627,419
1984-07-02$2.82$2.8214,641
1984-06-29$2.72$2.72266
1984-06-28$2.72$2.72532
1984-06-27$2.72$2.721,331
1984-06-26$2.82$2.825,324
1984-06-25$2.91$2.913,194
1984-06-22$2.82$2.821,331
1984-06-21$2.91$2.910
1984-06-20$2.91$2.917,454
1984-06-19$2.82$2.822,662
1984-06-18$2.82$2.824,525
1984-06-15$2.82$2.82266
1984-06-14$2.86$2.86799
1984-06-13$2.91$2.911,065
1984-06-12$2.82$2.8213,310
1984-06-11$2.91$2.915,590
1984-06-08$2.86$2.8613,576
1984-06-07$2.82$2.8210,382
1984-06-06$2.82$2.8229,016
1984-06-05$2.91$2.916,655
1984-06-04$2.77$2.775,856
1984-06-01$3.01$3.0119,965
1984-05-31$2.82$2.82254,221
1984-05-30$2.72$2.720
1984-05-29$2.72$2.725,590
1984-05-25$2.82$2.8210,914
1984-05-24$2.63$2.637,187
1984-05-23$2.72$2.7234,340
1984-05-22$3.15$3.15266
1984-05-21$3.10$3.10106,480
1984-05-18$3.19$3.195,058
1984-05-17$3.19$3.193,194
1984-05-16$3.19$3.1914,641
1984-05-15$3.15$3.150
1984-05-14$3.15$3.151,863
1984-05-11$3.19$3.1925,023
1984-05-10$3.29$3.2933,807
1984-05-09$3.05$3.051,331
1984-05-08$3.01$3.01266
1984-05-07$3.15$3.1520,764
1984-05-04$3.10$3.1011,447
1984-05-03$3.01$3.011,597
1984-05-02$3.05$3.05799
1984-05-01$3.10$3.1039,131
1984-04-30$3.10$3.1030,347
1984-04-27$3.01$3.0110,648
1984-04-26$3.05$3.0576,932
1984-04-25$2.91$2.91197,787
1984-04-24$2.91$2.910
1984-04-23$2.91$2.9111,979
1984-04-19$2.96$2.9624,224
1984-04-18$3.01$3.0113,310
1984-04-17$3.01$3.010
1984-04-16$3.01$3.01266
1984-04-13$3.01$3.0114,375
1984-04-12$3.01$3.013,993
1984-04-11$2.91$2.9156,701
1984-04-10$2.91$2.91183,146
1984-04-09$2.44$2.4411,180
1984-04-06$2.44$2.4439,398
1984-04-05$2.44$2.4431,944
1984-04-04$2.63$2.6326,354
1984-04-03$2.72$2.7275,335
1984-04-02$3.01$3.0122,893
1984-03-30$3.10$3.1021,296
1984-03-29$3.01$3.016,921
1984-03-28$3.05$3.0511,979
1984-03-27$3.01$3.0111,447
1984-03-26$3.01$3.0132,210
1984-03-23$3.05$3.0522,095
1984-03-22$3.01$3.010
1984-03-21$3.01$3.011,597
1984-03-20$3.05$3.0514,109
1984-03-19$3.10$3.1011,713
1984-03-16$3.15$3.1580,126
1984-03-15$3.01$3.0158,032
1984-03-14$3.01$3.017,720
1984-03-13$3.01$3.0122,627
1984-03-12$3.10$3.10114,466
1984-03-09$2.91$2.9113,842
1984-03-08$3.10$3.1031,145
1984-03-07$3.19$3.197,187
1984-03-06$3.47$3.4713,310
1984-03-05$3.66$3.6610,914
1984-03-02$3.76$3.767,187
1984-03-01$3.80$3.800
1984-02-29$3.80$3.80799
1984-02-28$3.85$3.853,194
1984-02-27$4.04$4.044,792
1984-02-24$3.94$3.9414,109
1984-02-23$3.76$3.76799
1984-02-22$3.76$3.762,928
1984-02-21$3.85$3.8512,245
1984-02-17$3.94$3.9432,743
1984-02-16$4.13$4.130
1984-02-15$4.13$4.137,720
1984-02-14$4.32$4.3212,511
1984-02-13$4.23$4.2319,433
1984-02-10$4.32$4.3210,914
1984-02-09$4.51$4.51799
1984-02-08$4.51$4.5111,447
1984-02-07$4.70$4.705,324
1984-02-06$4.70$4.70532
1984-02-03$4.74$4.7417,569
1984-02-02$4.79$4.797,720
1984-02-01$4.93$4.9339,398
1984-01-31$4.93$4.936,921
1984-01-30$4.88$4.8821,296
1984-01-27$4.88$4.8831,944
1984-01-26$4.98$4.9851,909
1984-01-25$4.98$4.9829,548
1984-01-24$4.93$4.939,583
1984-01-23$4.98$4.986,655
1984-01-20$4.98$4.9822,361
1984-01-19$4.88$4.8854,039
1984-01-18$4.88$4.883,993
1984-01-17$4.88$4.8818,634
1984-01-16$4.88$4.8811,713
1984-01-13$4.98$4.983,461
1984-01-12$4.79$4.7980,925
1984-01-11$4.70$4.701,597
1984-01-10$4.70$4.7044,455
1984-01-09$4.70$4.7013,044
1984-01-06$4.88$4.8812,778
1984-01-05$4.98$4.9811,180
1984-01-04$4.79$4.7923,958
1984-01-03$4.51$4.51799