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 — 1988

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1988-12-30$2.35$2.3515,173——
1988-12-29$2.39$2.3912,511——
1988-12-28$2.35$2.351,331——
1988-12-27$2.39$2.39532——
1988-12-23$2.35$2.3514,375——
1988-12-22$2.44$2.446,389——
1988-12-21$2.35$2.3527,152——
1988-12-20$2.35$2.3518,368——
1988-12-19$2.44$2.442,662——
1988-12-16$2.44$2.44532——
1988-12-15$2.44$2.443,727——
1988-12-14$2.44$2.4449,513——
1988-12-13$2.35$2.357,986——
1988-12-12$2.25$2.255,058——
1988-12-09$2.35$2.35266——
1988-12-08$2.35$2.3518,900——
1988-12-07$2.35$2.352,396——
1988-12-06$2.35$2.35532——
1988-12-05$2.35$2.35532——
1988-12-02$2.25$2.257,454——
1988-12-01$2.25$2.257,720——
1988-11-30$2.21$2.21799——
1988-11-29$2.21$2.21532——
1988-11-28$2.16$2.1629,548——
1988-11-25$2.11$2.112,662——
1988-11-23$2.21$2.211,863——
1988-11-22$2.25$2.254,792——
1988-11-21$2.11$2.11799——
1988-11-18$2.25$2.25532——
1988-11-17$2.30$2.30266——
1988-11-16$2.11$2.116,389——
1988-11-15$2.25$2.252,928——
1988-11-14$2.25$2.25532——
1988-11-11$2.35$2.350——
1988-11-10$2.35$2.35532——
1988-11-09$2.25$2.259,051——
1988-11-08$2.44$2.44266——
1988-11-07$2.44$2.44266——
1988-11-04$2.39$2.390——
1988-11-03$2.39$2.391,331——
1988-11-02$2.44$2.442,130——
1988-11-01$2.44$2.441,065——
1988-10-31$2.25$2.251,331——
1988-10-28$2.44$2.44266——
1988-10-27$2.44$2.441,331——
1988-10-26$2.44$2.445,856——
1988-10-25$2.25$2.253,993——
1988-10-24$2.25$2.2511,180——
1988-10-21$2.35$2.350——
1988-10-20$2.35$2.357,720——
1988-10-19$2.21$2.21266——
1988-10-18$2.35$2.35532——
1988-10-17$2.35$2.350——
1988-10-14$2.35$2.35266——
1988-10-13$2.30$2.3010,648——
1988-10-12$2.21$2.2121,296——
1988-10-11$2.21$2.2114,109——
1988-10-10$2.11$2.11532——
1988-10-07$2.11$2.11266——
1988-10-06$2.21$2.2112,511——
1988-10-05$2.25$2.2512,245——
1988-10-04$2.35$2.35378,270——
1988-10-03$2.25$2.255,324——
1988-09-30$2.30$2.305,058——
1988-09-29$2.35$2.352,928——
1988-09-28$2.35$2.357,986——
1988-09-27$2.35$2.359,317——
1988-09-26$2.25$2.2516,238——
1988-09-23$2.44$2.448,252——
1988-09-22$2.35$2.3510,382——
1988-09-21$2.30$2.300——
1988-09-20$2.30$2.307,986——
1988-09-19$2.25$2.256,655——
1988-09-16$2.25$2.251,863——
1988-09-15$2.35$2.352,928——
1988-09-14$2.35$2.350——
1988-09-13$2.35$2.353,461——
1988-09-12$2.30$2.3019,433——
1988-09-09$2.25$2.25532——
1988-09-08$2.35$2.351,863——
1988-09-07$2.44$2.440——
1988-09-06$2.44$2.440——
1988-09-02$2.44$2.440——
1988-09-01$2.44$2.443,194——
1988-08-31$2.44$2.44532——
1988-08-30$2.44$2.442,928——
1988-08-29$2.44$2.441,065——
1988-08-26$2.44$2.44266——
1988-08-25$2.44$2.44266——
1988-08-24$2.54$2.5424,224——
1988-08-23$2.54$2.541,065——
1988-08-22$2.54$2.54266——
1988-08-19$2.54$2.54799——
1988-08-18$2.44$2.44266——
1988-08-17$2.35$2.350——
1988-08-16$2.35$2.355,590——
1988-08-15$2.49$2.49799——
1988-08-12$2.49$2.4915,440——
1988-08-11$2.54$2.54532——
1988-08-10$2.54$2.5431,412——
1988-08-09$2.63$2.633,194——
1988-08-08$2.63$2.630——
1988-08-05$2.63$2.631,331——
1988-08-04$2.54$2.545,856——
1988-08-03$2.54$2.5417,835——
1988-08-02$2.63$2.633,993——
1988-08-01$2.63$2.635,856——
1988-07-29$2.63$2.6321,296——
1988-07-28$2.63$2.6314,907——
1988-07-27$2.72$2.725,590——
1988-07-26$2.54$2.5428,483——
1988-07-25$2.44$2.441,331——
1988-07-22$2.44$2.442,396——
1988-07-21$2.49$2.498,518——
1988-07-20$2.44$2.4442,326——
1988-07-19$2.16$2.1625,289——
1988-07-18$2.07$2.0718,900——
1988-07-15$2.16$2.160——
1988-07-14$2.16$2.166,123——
1988-07-13$2.16$2.166,921——
1988-07-12$2.16$2.16532——
1988-07-11$1.97$1.97266——
1988-07-08$2.11$2.110——
1988-07-07$2.11$2.119,317——
1988-07-06$1.97$1.975,590——
1988-07-05$2.07$2.072,130——
1988-07-01$2.16$2.163,194——
1988-06-30$2.16$2.16266——
1988-06-29$1.97$1.97532——
1988-06-28$2.16$2.164,259——
1988-06-27$1.97$1.974,259——
1988-06-24$2.16$2.160——
1988-06-23$2.16$2.160——
1988-06-22$2.16$2.164,525——
1988-06-21$2.16$2.1627,152——
1988-06-20$2.07$2.070——
1988-06-17$2.07$2.07799——
1988-06-16$2.07$2.07266——
1988-06-15$2.07$2.0721,562——
1988-06-14$2.16$2.16266——
1988-06-13$2.16$2.16799——
1988-06-10$2.16$2.161,065——
1988-06-09$2.16$2.161,065——
1988-06-08$2.16$2.1617,569——
1988-06-07$2.16$2.165,590——
1988-06-06$2.16$2.16266——
1988-06-03$2.16$2.16266——
1988-06-02$2.16$2.161,331——
1988-06-01$2.16$2.16266——
1988-05-31$2.21$2.21532——
1988-05-27$2.21$2.21532——
1988-05-26$2.25$2.25532——
1988-05-25$2.25$2.251,065——
1988-05-24$2.16$2.1614,641——
1988-05-23$2.07$2.070——
1988-05-20$2.07$2.070——
1988-05-19$2.07$2.071,065——
1988-05-18$2.07$2.070——
1988-05-17$2.07$2.071,065——
1988-05-16$2.07$2.071,863——
1988-05-13$2.07$2.07532——
1988-05-12$2.07$2.07266——
1988-05-11$2.07$2.071,331——
1988-05-10$2.07$2.07799——
1988-05-09$2.07$2.076,921——
1988-05-06$2.07$2.073,727——
1988-05-05$2.16$2.161,065——
1988-05-04$2.25$2.253,993——
1988-05-03$2.11$2.1186,515——
1988-05-02$2.16$2.16266——
1988-04-29$2.16$2.16266——
1988-04-28$2.07$2.0710,914——
1988-04-27$2.16$2.1612,511——
1988-04-26$2.02$2.021,065——
1988-04-25$1.97$1.9723,958——
1988-04-22$1.97$1.972,130——
1988-04-21$1.97$1.975,856——
1988-04-20$2.02$2.023,194——
1988-04-19$2.02$2.023,194——
1988-04-18$2.02$2.0210,648——
1988-04-15$2.02$2.02266——
1988-04-14$2.02$2.0214,109——
1988-04-13$2.11$2.112,928——
1988-04-12$2.11$2.111,065——
1988-04-11$2.11$2.1125,555——
1988-04-08$1.93$1.931,065——
1988-04-07$2.07$2.071,065——
1988-04-06$2.07$2.07266——
1988-04-05$2.07$2.07266——
1988-04-04$2.11$2.111,863——
1988-03-31$2.16$2.162,130——
1988-03-30$2.16$2.16266——
1988-03-29$2.21$2.211,863——
1988-03-28$2.25$2.253,993——
1988-03-25$2.25$2.25129,107——
1988-03-24$2.21$2.211,065——
1988-03-23$2.21$2.217,986——
1988-03-22$2.21$2.216,389——
1988-03-21$2.25$2.253,194——
1988-03-18$2.25$2.251,331——
1988-03-17$2.25$2.252,928——
1988-03-16$2.25$2.25266——
1988-03-15$2.21$2.2116,238——
1988-03-14$2.21$2.2123,426——
1988-03-11$2.07$2.072,928——
1988-03-10$2.11$2.113,194——
1988-03-09$2.16$2.168,785——
1988-03-08$2.16$2.1613,044——
1988-03-07$2.11$2.116,921——
1988-03-04$2.07$2.07799——
1988-03-03$2.07$2.07532——
1988-03-02$2.07$2.076,655——
1988-03-01$2.07$2.072,662——
1988-02-29$2.07$2.07532——
1988-02-26$2.07$2.07266——
1988-02-25$2.07$2.07266——
1988-02-24$2.02$2.028,252——
1988-02-23$2.02$2.02266——
1988-02-22$2.02$2.02799——
1988-02-19$2.02$2.02266——
1988-02-18$2.02$2.02799——
1988-02-17$2.02$2.022,928——
1988-02-16$2.02$2.021,065——
1988-02-12$2.02$2.025,856——
1988-02-11$2.02$2.021,597——
1988-02-10$2.07$2.078,785——
1988-02-09$2.02$2.0214,375——
1988-02-08$1.97$1.97799——
1988-02-05$1.97$1.97266——
1988-02-04$1.97$1.972,662——
1988-02-03$1.97$1.975,324——
1988-02-02$1.93$1.935,058——
1988-02-01$1.93$1.93266——
1988-01-29$1.93$1.935,058——
1988-01-28$1.93$1.9327,419——
1988-01-27$1.93$1.931,863——
1988-01-26$1.93$1.93266——
1988-01-25$1.88$1.8810,648——
1988-01-22$1.93$1.9319,699——
1988-01-21$1.93$1.9332,476——
1988-01-20$1.97$1.971,065——
1988-01-19$1.97$1.971,863——
1988-01-18$1.97$1.97799——
1988-01-15$1.97$1.9710,914——
1988-01-14$1.97$1.97532——
1988-01-13$1.97$1.971,863——
1988-01-12$1.97$1.97532——
1988-01-11$1.97$1.9724,224——
1988-01-08$1.97$1.971,331——
1988-01-07$1.97$1.97799——
1988-01-06$1.97$1.9713,576——
1988-01-05$2.02$2.023,194——
1988-01-04$2.02$2.0228,217——