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 — 1999

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1999-12-31$3.81$3.81252,800——
1999-12-30$3.50$3.50247,200——
1999-12-29$3.16$3.16131,400——
1999-12-28$3.13$3.12152,000——
1999-12-27$3.13$3.12278,200——
1999-12-23$3.25$3.25310,400——
1999-12-22$3.02$3.02333,600——
1999-12-21$3.36$3.36151,800——
1999-12-20$3.50$3.50225,200——
1999-12-17$3.31$3.31223,600——
1999-12-16$3.53$3.53203,600——
1999-12-15$3.44$3.44322,000——
1999-12-14$3.81$3.81467,400——
1999-12-13$4.02$4.02595,200——
1999-12-10$4.58$4.581,956,000——
1999-12-09$5.19$5.196,354,000——
1999-12-08$4.13$4.131,247,600——
1999-12-07$3.44$3.441,094,000——
1999-12-06$3.75$3.753,379,400——
1999-12-03$2.63$2.6225,000——
1999-12-02$2.53$2.537,000——
1999-12-01$2.56$2.5647,000——
1999-11-30$2.38$2.387,200——
1999-11-29$2.50$2.500——
1999-11-26$2.50$2.508,200——
1999-11-24$2.59$2.5957,800——
1999-11-23$2.59$2.5965,200——
1999-11-22$2.47$2.4732,400——
1999-11-19$2.41$2.412,200——
1999-11-18$2.38$2.3846,600——
1999-11-17$2.50$2.508,000——
1999-11-16$2.44$2.4417,800——
1999-11-15$2.50$2.5010,000——
1999-11-12$2.56$2.561,400——
1999-11-11$2.56$2.560——
1999-11-10$2.56$2.5613,600——
1999-11-09$2.53$2.532,200——
1999-11-08$2.50$2.5010,400——
1999-11-05$2.50$2.502,400——
1999-11-04$2.50$2.502,200——
1999-11-03$2.50$2.501,200——
1999-11-02$2.56$2.5619,400——
1999-11-01$2.66$2.66200——
1999-10-29$2.75$2.7514,600——
1999-10-28$2.75$2.7519,600——
1999-10-27$2.66$2.660——
1999-10-26$2.66$2.6619,800——
1999-10-25$2.44$2.4431,000——
1999-10-22$2.56$2.568,000——
1999-10-21$2.53$2.530——
1999-10-20$2.53$2.5313,800——
1999-10-19$2.50$2.501,400——
1999-10-18$2.48$2.489,600——
1999-10-15$2.53$2.531,400——
1999-10-14$2.52$2.5210,200——
1999-10-13$2.50$2.5036,000——
1999-10-12$2.59$2.592,600——
1999-10-11$2.56$2.567,200——
1999-10-08$2.47$2.471,200——
1999-10-07$2.48$2.4880,200——
1999-10-06$2.50$2.5020,400——
1999-10-05$2.66$2.6667,000——
1999-10-04$2.75$2.7524,800——
1999-10-01$2.52$2.5240,000——
1999-09-30$2.88$2.87141,000——
1999-09-29$2.66$2.6661,600——
1999-09-28$3.25$3.256,800——
1999-09-27$3.22$3.223,200——
1999-09-24$3.19$3.1911,400——
1999-09-23$3.25$3.250——
1999-09-22$3.25$3.25800——
1999-09-21$3.25$3.2520,400——
1999-09-20$3.13$3.1232,600——
1999-09-17$3.25$3.259,200——
1999-09-16$3.25$3.254,400——
1999-09-15$3.26$3.2614,400——
1999-09-14$3.25$3.253,200——
1999-09-13$3.25$3.2530,600——
1999-09-10$3.24$3.2419,400——
1999-09-09$3.22$3.2211,200——
1999-09-08$3.25$3.252,800——
1999-09-07$3.25$3.250——
1999-09-03$3.25$3.255,800——
1999-09-02$3.25$3.2516,800——
1999-09-01$3.16$3.16200——
1999-08-31$3.23$3.23200——
1999-08-30$3.23$3.2312,000——
1999-08-27$3.13$3.1222,800——
1999-08-26$2.81$2.8153,600——
1999-08-25$2.84$2.84800——
1999-08-24$2.78$2.789,800——
1999-08-23$2.75$2.7532,800——
1999-08-20$2.78$2.7824,200——
1999-08-19$2.69$2.6994,800——
1999-08-18$2.81$2.8115,400——
1999-08-17$2.97$2.979,400——
1999-08-16$2.81$2.8121,400——
1999-08-13$2.97$2.9742,800——
1999-08-12$2.88$2.8783,600——
1999-08-11$2.81$2.8122,800——
1999-08-10$2.81$2.813,000——
1999-08-09$3.00$3.00600——
1999-08-06$2.94$2.9446,600——
1999-08-05$3.00$3.0046,800——
1999-08-04$3.06$3.0617,800——
1999-08-03$3.06$3.0630,200——
1999-08-02$3.22$3.2223,000——
1999-07-30$3.13$3.1230,200——
1999-07-29$3.19$3.1967,200——
1999-07-28$3.25$3.2545,800——
1999-07-27$3.44$3.44400——
1999-07-26$3.50$3.504,000——
1999-07-23$3.44$3.4420,000——
1999-07-22$3.31$3.313,200——
1999-07-21$3.38$3.3832,000——
1999-07-20$3.44$3.445,200——
1999-07-19$3.38$3.384,400——
1999-07-16$3.38$3.388,800——
1999-07-15$3.38$3.3819,000——
1999-07-14$3.38$3.384,000——
1999-07-13$3.38$3.3858,600——
1999-07-12$3.31$3.313,200——
1999-07-09$3.38$3.386,400——
1999-07-08$3.25$3.253,400——
1999-07-07$3.25$3.253,600——
1999-07-06$3.38$3.3811,400——
1999-07-02$3.28$3.282,000——
1999-07-01$3.25$3.256,000——
1999-06-30$3.31$3.315,000——
1999-06-29$3.13$3.127,200——
1999-06-28$3.19$3.19400——
1999-06-25$3.31$3.311,600——
1999-06-24$3.31$3.311,200——
1999-06-23$3.31$3.3143,000——
1999-06-22$3.44$3.4411,400——
1999-06-21$3.47$3.471,200——
1999-06-18$3.44$3.4416,800——
1999-06-17$3.25$3.2546,000——
1999-06-16$3.25$3.2513,400——
1999-06-15$3.25$3.2512,600——
1999-06-14$3.47$3.4716,000——
1999-06-11$3.38$3.382,600——
1999-06-10$3.25$3.2521,200——
1999-06-09$3.47$3.4717,600——
1999-06-08$3.50$3.5017,800——
1999-06-07$3.38$3.384,000——
1999-06-04$3.25$3.2522,600——
1999-06-03$3.38$3.382,000——
1999-06-02$3.31$3.317,800——
1999-06-01$3.47$3.4720,000——
1999-05-28$3.50$3.5040,400——
1999-05-27$3.44$3.442,800——
1999-05-26$3.63$3.6233,800——
1999-05-25$3.63$3.629,800——
1999-05-24$3.63$3.629,200——
1999-05-21$3.59$3.59112,400——
1999-05-20$3.72$3.7288,200——
1999-05-19$3.56$3.565,600——
1999-05-18$3.41$3.4123,600——
1999-05-17$3.56$3.5629,800——
1999-05-14$2.88$2.8767,000——
1999-05-13$3.38$3.381,200——
1999-05-12$3.38$3.3819,600——
1999-05-11$3.50$3.50600——
1999-05-10$3.50$3.501,000——
1999-05-07$3.50$3.50800——
1999-05-06$3.50$3.502,000——
1999-05-05$3.63$3.620——
1999-05-04$3.63$3.62400——
1999-05-03$3.38$3.383,000——
1999-04-30$3.63$3.62800——
1999-04-29$3.63$3.621,400——
1999-04-28$3.50$3.5020,200——
1999-04-27$3.56$3.562,200——
1999-04-26$3.38$3.38800——
1999-04-23$3.69$3.69800——
1999-04-22$2.72$2.7215,600——
1999-04-21$3.63$3.621,200——
1999-04-20$3.50$3.50800——
1999-04-19$3.13$3.1248,000——
1999-04-16$3.18$3.1837,180——
1999-04-15$3.30$3.3047,740——
1999-04-14$3.13$3.1224,420——
1999-04-13$3.64$3.64440——
1999-04-12$3.64$3.6410,780——
1999-04-09$3.47$3.479,240——
1999-04-08$3.41$3.4111,660——
1999-04-07$3.41$3.41220——
1999-04-06$3.18$3.18880——
1999-04-05$3.18$3.1855,440——
1999-04-01$3.64$3.64880——
1999-03-31$3.58$3.5833,440——
1999-03-30$3.64$3.640——
1999-03-29$3.64$3.649,900——
1999-03-26$3.78$3.786,600——
1999-03-25$3.07$3.0712,540——
1999-03-24$3.30$3.301,540——
1999-03-23$3.13$3.121,760——
1999-03-22$3.28$3.283,520——
1999-03-19$3.38$3.3827,060——
1999-03-18$3.25$3.257,920——
1999-03-17$3.44$3.443,960——
1999-03-16$3.49$3.499,460——
1999-03-15$3.49$3.4915,840——
1999-03-12$3.58$3.584,620——
1999-03-11$3.64$3.640——
1999-03-10$3.64$3.644,400——
1999-03-09$3.47$3.47220——
1999-03-08$3.52$3.52440——
1999-03-05$3.64$3.64660——
1999-03-04$3.58$3.5828,820——
1999-03-03$3.58$3.582,640——
1999-03-02$3.55$3.550——
1999-03-01$3.55$3.557,260——
1999-02-26$3.64$3.645,060——
1999-02-25$3.64$3.641,980——
1999-02-24$3.55$3.550——
1999-02-23$3.55$3.5511,440——
1999-02-22$3.64$3.640——
1999-02-19$3.64$3.641,760——
1999-02-18$3.52$3.524,840——
1999-02-17$3.81$3.813,960——
1999-02-16$3.58$3.58880——
1999-02-12$3.61$3.611,540——
1999-02-11$3.69$3.690——
1999-02-10$3.69$3.699,240——
1999-02-09$3.86$3.8637,400——
1999-02-08$3.69$3.696,820——
1999-02-05$3.86$3.869,680——
1999-02-04$3.52$3.5212,100——
1999-02-03$3.66$3.661,320——
1999-02-02$3.75$3.752,420——
1999-02-01$3.86$3.8658,960——
1999-01-29$3.92$3.9211,880——
1999-01-28$3.69$3.691,540——
1999-01-27$4.06$4.062,420——
1999-01-26$3.98$3.9822,660——
1999-01-25$4.06$4.0620,460——
1999-01-22$4.09$4.0911,660——
1999-01-21$4.03$4.0350,820——
1999-01-20$4.03$4.0391,080——
1999-01-19$3.69$3.6918,260——
1999-01-15$3.81$3.8147,520——
1999-01-14$3.69$3.69440——
1999-01-13$3.69$3.6910,780——
1999-01-12$3.52$3.5256,760——
1999-01-11$3.52$3.5268,640——
1999-01-08$3.49$3.492,640——
1999-01-07$3.58$3.587,480——
1999-01-06$3.52$3.52660——
1999-01-05$3.61$3.6112,100——
1999-01-04$3.52$3.52660——