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 — 1987

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1987-12-31$1.97$1.975,856
1987-12-30$1.97$1.9727,152
1987-12-29$1.97$1.9739,398
1987-12-28$1.93$1.9318,634
1987-12-24$1.97$1.975,324
1987-12-23$2.02$2.0245,520
1987-12-22$1.97$1.9717,835
1987-12-21$1.88$1.88266,999
1987-12-18$1.97$1.9711,979
1987-12-17$1.93$1.9333,275
1987-12-16$1.93$1.9338,067
1987-12-15$1.93$1.935,856
1987-12-14$1.93$1.935,058
1987-12-11$1.93$1.931,331
1987-12-10$1.88$1.8816,771
1987-12-09$1.88$1.885,856
1987-12-08$1.88$1.8811,180
1987-12-07$1.88$1.8833,807
1987-12-04$1.88$1.8813,310
1987-12-03$1.88$1.8825,023
1987-12-02$1.93$1.9338,599
1987-12-01$1.93$1.9353,772
1987-11-30$1.88$1.8838,067
1987-11-27$1.93$1.9324,224
1987-11-25$1.93$1.9313,842
1987-11-24$1.93$1.932,662
1987-11-23$1.93$1.93112,603
1987-11-20$1.93$1.9376,666
1987-11-19$1.88$1.8829,016
1987-11-18$1.93$1.932,928
1987-11-17$1.88$1.8852,441
1987-11-16$1.78$1.782,396
1987-11-13$1.88$1.885,058
1987-11-12$1.93$1.9339,398
1987-11-11$1.78$1.782,662
1987-11-10$1.78$1.78799
1987-11-09$1.83$1.838,785
1987-11-06$1.88$1.8810,648
1987-11-05$1.88$1.8835,138
1987-11-04$1.88$1.882,662
1987-11-03$1.88$1.8827,951
1987-11-02$1.83$1.8311,979
1987-10-30$1.78$1.7810,914
1987-10-29$1.78$1.7831,145
1987-10-28$1.88$1.8838,599
1987-10-27$1.78$1.7834,340
1987-10-26$1.78$1.7856,701
1987-10-23$1.78$1.7858,564
1987-10-22$1.78$1.7819,965
1987-10-21$1.74$1.7434,606
1987-10-20$1.78$1.7852,708
1987-10-19$1.93$1.9348,448
1987-10-16$2.07$2.077,187
1987-10-15$2.16$2.169,583
1987-10-14$2.16$2.16266
1987-10-13$2.25$2.2546,053
1987-10-12$2.25$2.2551,110
1987-10-09$2.25$2.251,863
1987-10-08$2.30$2.303,993
1987-10-07$2.30$2.30102,753
1987-10-06$2.30$2.3021,828
1987-10-05$2.35$2.3529,548
1987-10-02$2.35$2.3541,527
1987-10-01$2.30$2.302,662
1987-09-30$2.30$2.3037,268
1987-09-29$2.30$2.3039,930
1987-09-28$2.21$2.212,662
1987-09-25$2.21$2.21266
1987-09-24$2.21$2.219,051
1987-09-23$2.35$2.351,597
1987-09-22$2.21$2.213,194
1987-09-21$2.21$2.21799
1987-09-18$2.21$2.216,655
1987-09-17$2.39$2.3936,736
1987-09-16$2.35$2.3532,743
1987-09-15$2.30$2.303,993
1987-09-14$2.30$2.301,863
1987-09-11$2.35$2.358,518
1987-09-10$2.39$2.392,662
1987-09-09$2.35$2.3515,972
1987-09-08$2.35$2.3517,569
1987-09-04$2.39$2.396,655
1987-09-03$2.39$2.3911,713
1987-09-02$2.39$2.391,597
1987-09-01$2.35$2.3519,699
1987-08-31$2.25$2.25532
1987-08-28$2.35$2.351,065
1987-08-27$2.35$2.3537,268
1987-08-26$2.25$2.2515,173
1987-08-25$2.35$2.3519,433
1987-08-24$2.30$2.300
1987-08-21$2.30$2.3082,522
1987-08-20$2.35$2.352,928
1987-08-19$2.35$2.35107,811
1987-08-18$2.30$2.3026,620
1987-08-17$2.30$2.303,993
1987-08-14$2.39$2.395,856
1987-08-13$2.39$2.3913,310
1987-08-12$2.35$2.35129,107
1987-08-11$2.30$2.3030,879
1987-08-10$2.25$2.2564,687
1987-08-07$2.25$2.2517,303
1987-08-06$2.25$2.252,928
1987-08-05$2.21$2.2145,520
1987-08-04$2.25$2.2516,771
1987-08-03$2.16$2.166,655
1987-07-31$2.25$2.253,461
1987-07-30$2.25$2.2568,680
1987-07-29$2.25$2.255,058
1987-07-28$2.25$2.252,130
1987-07-27$2.25$2.259,583
1987-07-24$2.21$2.213,194
1987-07-23$2.21$2.2111,979
1987-07-22$2.21$2.219,051
1987-07-21$2.11$2.113,461
1987-07-20$2.16$2.1622,095
1987-07-17$2.11$2.111,597
1987-07-16$2.16$2.1614,109
1987-07-15$2.16$2.161,597
1987-07-14$2.11$2.1113,576
1987-07-13$2.25$2.257,986
1987-07-10$2.16$2.165,856
1987-07-09$2.16$2.167,986
1987-07-08$2.25$2.251,065
1987-07-07$2.11$2.111,331
1987-07-06$2.16$2.1612,778
1987-07-02$2.16$2.1638,865
1987-07-01$2.11$2.119,051
1987-06-30$2.02$2.022,130
1987-06-29$2.16$2.161,597
1987-06-26$2.02$2.021,597
1987-06-25$2.16$2.169,849
1987-06-24$2.02$2.022,130
1987-06-23$2.07$2.0730,879
1987-06-22$2.07$2.072,662
1987-06-19$2.07$2.077,720
1987-06-18$2.16$2.1614,907
1987-06-17$1.97$1.9768,413
1987-06-16$2.02$2.02112,336
1987-06-15$2.02$2.021,863
1987-06-12$1.97$1.9755,103
1987-06-11$2.02$2.0245,254
1987-06-10$2.02$2.0210,914
1987-06-09$2.02$2.02155,461
1987-06-08$1.97$1.9717,303
1987-06-05$2.07$2.0713,310
1987-06-04$2.07$2.0792,638
1987-06-03$2.07$2.073,461
1987-06-02$2.02$2.0230,347
1987-06-01$2.02$2.0216,504
1987-05-29$2.02$2.0227,419
1987-05-28$2.11$2.1151,110
1987-05-27$2.02$2.0237,534
1987-05-26$2.07$2.0719,166
1987-05-22$2.07$2.070
1987-05-21$2.07$2.07114,200
1987-05-20$2.02$2.027,720
1987-05-19$2.07$2.0723,159
1987-05-18$2.11$2.1117,569
1987-05-15$2.07$2.0742,060
1987-05-14$2.16$2.1617,569
1987-05-13$2.11$2.115,058
1987-05-12$2.07$2.0714,907
1987-05-11$2.07$2.075,590
1987-05-08$2.07$2.071,065
1987-05-07$2.16$2.1619,433
1987-05-06$2.21$2.2129,282
1987-05-05$2.11$2.1118,900
1987-05-04$2.21$2.2142,858
1987-05-01$2.30$2.303,727
1987-04-30$2.30$2.3010,116
1987-04-29$2.25$2.25266
1987-04-28$2.07$2.072,396
1987-04-27$2.16$2.164,792
1987-04-24$2.11$2.1113,044
1987-04-23$2.11$2.115,856
1987-04-22$2.02$2.022,396
1987-04-21$2.02$2.023,727
1987-04-20$2.07$2.0736,203
1987-04-16$2.25$2.2518,102
1987-04-15$2.16$2.165,324
1987-04-14$2.02$2.029,849
1987-04-13$2.21$2.213,194
1987-04-10$2.02$2.0218,634
1987-04-09$2.21$2.2139,664
1987-04-08$2.11$2.116,921
1987-04-07$2.25$2.2515,706
1987-04-06$2.30$2.3021,296
1987-04-03$2.44$2.4419,965
1987-04-02$2.35$2.3577,730
1987-04-01$2.35$2.3564,420
1987-03-31$2.11$2.1159,895
1987-03-30$2.16$2.1625,023
1987-03-27$2.16$2.1639,398
1987-03-26$2.11$2.1125,023
1987-03-25$2.02$2.0213,044
1987-03-24$2.07$2.0713,842
1987-03-23$2.02$2.0291,839
1987-03-20$2.16$2.1660,694
1987-03-19$2.25$2.2529,814
1987-03-18$2.16$2.166,123
1987-03-17$2.16$2.1619,166
1987-03-16$2.25$2.2514,375
1987-03-13$2.35$2.3554,837
1987-03-12$2.30$2.30104,617
1987-03-11$2.35$2.3569,478
1987-03-10$2.30$2.30106,746
1987-03-09$2.35$2.3551,909
1987-03-06$2.30$2.3035,405
1987-03-05$2.39$2.3922,361
1987-03-04$2.39$2.3928,750
1987-03-03$2.35$2.3546,319
1987-03-02$2.44$2.4416,771
1987-02-27$2.44$2.4425,289
1987-02-26$2.44$2.4418,368
1987-02-25$2.35$2.3589,709
1987-02-24$2.49$2.4926,886
1987-02-23$2.44$2.4422,361
1987-02-20$2.44$2.44264,337
1987-02-19$2.54$2.5414,641
1987-02-18$2.39$2.3915,972
1987-02-17$2.39$2.395,590
1987-02-13$2.39$2.395,590
1987-02-12$2.58$2.586,921
1987-02-11$2.54$2.5421,296
1987-02-10$2.44$2.4414,641
1987-02-09$2.58$2.5817,303
1987-02-06$2.54$2.5416,771
1987-02-05$2.54$2.5460,161
1987-02-04$2.63$2.6318,634
1987-02-03$2.54$2.5422,893
1987-02-02$2.44$2.4449,513
1987-01-30$2.44$2.4417,569
1987-01-29$2.49$2.492,396
1987-01-28$2.35$2.357,187
1987-01-27$2.35$2.355,590
1987-01-26$2.49$2.4937,534
1987-01-23$2.58$2.5855,636
1987-01-22$2.58$2.5818,634
1987-01-21$2.58$2.5840,196
1987-01-20$2.72$2.7214,375
1987-01-19$2.58$2.5843,124
1987-01-16$2.68$2.6892,904
1987-01-15$2.49$2.4910,116
1987-01-14$2.35$2.352,396
1987-01-13$2.44$2.4456,434
1987-01-12$2.39$2.399,051
1987-01-09$2.35$2.3512,778
1987-01-08$2.44$2.4415,173
1987-01-07$2.30$2.30172,231
1987-01-06$2.35$2.3539,131
1987-01-05$2.44$2.4447,650
1987-01-02$2.35$2.3513,842