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.

View year

Historical Stock Price — 2017

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2017-12-29$7.91$11.2083,000
2017-12-28$7.35$10.4168,400
2017-12-27$6.82$9.5819,200
2017-12-26$6.54$9.1925,200
2017-12-22$6.50$9.1450,400
2017-12-21$6.50$9.1496,800
2017-12-20$5.70$8.0034,400
2017-12-19$5.74$8.07108,000
2017-12-18$5.40$7.596,800
2017-12-15$5.39$7.586,200
2017-12-14$5.44$7.641,800
2017-12-13$5.36$7.535,200
2017-12-12$5.38$7.553,000
2017-12-11$5.44$7.6524,400
2017-12-08$5.35$7.5122,800
2017-12-07$5.45$7.6618,400
2017-12-06$5.43$7.625,600
2017-12-05$5.42$7.6217,600
2017-12-04$5.33$7.498,800
2017-12-01$5.30$7.4516,400
2017-11-30$5.37$7.544,600
2017-11-29$5.34$7.504,800
2017-11-28$5.42$7.624,800
2017-11-27$5.39$7.5810,200
2017-11-24$5.47$7.683,800
2017-11-22$5.35$7.5111,200
2017-11-21$5.38$7.5513,800
2017-11-20$5.49$7.723,600
2017-11-17$5.50$7.732,400
2017-11-16$5.45$7.656,400
2017-11-15$5.45$7.667,600
2017-11-14$5.48$7.70400
2017-11-13$5.50$7.732,400
2017-11-10$5.48$7.702,400
2017-11-09$5.49$7.71800
2017-11-08$5.53$7.776,600
2017-11-07$5.51$7.7413,200
2017-11-06$5.51$7.743,400
2017-11-03$5.53$7.773,400
2017-11-02$5.53$7.7712,400
2017-11-01$5.52$7.757,400
2017-10-31$5.55$7.802,000
2017-10-30$5.55$7.801,400
2017-10-27$5.58$7.841,400
2017-10-26$5.55$7.808,200
2017-10-25$5.53$7.77200
2017-10-24$5.55$7.795,600
2017-10-23$5.50$7.725,800
2017-10-20$5.53$7.775,400
2017-10-19$5.56$7.817,200
2017-10-18$5.52$7.762,000
2017-10-17$5.49$7.726,800
2017-10-16$5.51$7.745,000
2017-10-13$5.52$7.751,000
2017-10-12$5.49$7.715,600
2017-10-11$5.48$7.7014,000
2017-10-10$5.47$7.6810,400
2017-10-09$5.45$7.653,200
2017-10-06$5.41$7.604,200
2017-10-05$5.48$7.7014,400
2017-10-04$5.49$7.723,800
2017-10-03$5.44$7.648,000
2017-10-02$5.55$7.7911,800
2017-09-29$5.53$7.7717,000
2017-09-28$5.41$7.6030,600
2017-09-27$5.19$7.2910,400
2017-09-26$5.13$7.209,000
2017-09-25$5.10$7.1618,800
2017-09-22$5.07$7.1310,400
2017-09-21$5.06$7.1023,000
2017-09-20$5.23$7.3413,400
2017-09-19$5.24$7.368,000
2017-09-18$5.23$7.3510,800
2017-09-15$5.10$7.1711,200
2017-09-14$5.06$7.1012,800
2017-09-13$5.09$7.157,800
2017-09-12$5.03$7.079,200
2017-09-11$5.06$7.114,200
2017-09-08$5.06$7.1015,200
2017-09-07$5.04$7.0824,400
2017-09-06$4.83$6.7817,600
2017-09-05$5.05$7.095,600
2017-09-01$5.07$7.121,800
2017-08-31$5.06$7.107,600
2017-08-30$5.10$7.1613,600
2017-08-29$5.10$7.173,600
2017-08-28$5.05$7.1015,200
2017-08-25$5.06$7.105,600
2017-08-24$5.06$7.116,400
2017-08-23$5.10$7.1717,600
2017-08-22$5.21$7.3215,600
2017-08-21$5.08$7.148,200
2017-08-18$5.17$7.2710,000
2017-08-17$5.16$7.251,400
2017-08-16$5.15$7.1512,800
2017-08-15$5.21$7.246,000
2017-08-14$5.12$7.1113,600
2017-08-11$5.14$7.148,800
2017-08-10$5.17$7.1914,600
2017-08-09$5.22$7.2511,000
2017-08-08$5.22$7.263,400
2017-08-07$5.18$7.202,400
2017-08-04$5.20$7.236,800
2017-08-03$5.19$7.218,800
2017-08-02$5.18$7.202,200
2017-08-01$5.18$7.208,800
2017-07-31$5.16$7.1713,200
2017-07-28$5.20$7.232,000
2017-07-27$5.15$7.165,200
2017-07-26$5.21$7.246,800
2017-07-25$5.15$7.1610,000
2017-07-24$5.16$7.176,600
2017-07-21$5.23$7.277,600
2017-07-20$5.18$7.2020,600
2017-07-19$5.28$7.349,400
2017-07-18$5.31$7.382,200
2017-07-17$5.47$7.614,400
2017-07-14$5.52$7.682,600
2017-07-13$5.49$7.633,400
2017-07-12$5.36$7.4514,800
2017-07-11$5.33$7.4014,400
2017-07-10$5.42$7.533,400
2017-07-07$5.44$7.565,600
2017-07-06$5.41$7.529,600
2017-07-05$5.40$7.517,600
2017-07-03$5.39$7.492,400
2017-06-30$5.39$7.4913,600
2017-06-29$5.47$7.602,000
2017-06-28$5.47$7.6021,800
2017-06-27$5.45$7.5719,600
2017-06-26$5.29$7.3527,600
2017-06-23$5.27$7.3215,000
2017-06-22$5.44$7.563,600
2017-06-21$5.46$7.5911,800
2017-06-20$5.38$7.479,200
2017-06-19$5.48$7.6113,600
2017-06-16$5.46$7.5935,400
2017-06-15$5.42$7.5412,600
2017-06-14$5.49$7.636,600
2017-06-13$5.55$7.722,200
2017-06-12$5.51$7.6514,800
2017-06-09$5.50$7.6536,600
2017-06-08$5.39$7.498,800
2017-06-07$5.41$7.5211,200
2017-06-06$5.47$7.6114,200
2017-06-05$5.49$7.6327,000
2017-06-02$5.55$7.71400
2017-06-01$5.46$7.5925,600
2017-05-31$5.44$7.5613,400
2017-05-30$5.48$7.6113,000
2017-05-26$5.49$7.556,600
2017-05-25$5.25$7.2333,600
2017-05-24$5.51$7.5811,600
2017-05-23$5.43$7.472,200
2017-05-22$5.50$7.576,400
2017-05-19$5.52$7.6019,600
2017-05-18$5.50$7.5614,600
2017-05-17$5.50$7.5726,600
2017-05-16$5.39$7.429,400
2017-05-15$5.34$7.3521,200
2017-05-12$5.40$7.434,000
2017-05-11$5.44$7.481,800
2017-05-10$5.29$7.287,400
2017-05-09$5.24$7.214,400
2017-05-08$5.25$7.224,000
2017-05-05$5.18$7.1212,800
2017-05-04$5.12$7.0516,400
2017-05-03$5.24$7.214,800
2017-05-02$5.26$7.2313,000
2017-05-01$5.44$7.4914,000
2017-04-28$5.45$7.508,400
2017-04-27$5.53$7.619,400
2017-04-26$5.55$7.6311,800
2017-04-25$5.49$7.5523,200
2017-04-24$5.40$7.4335,600
2017-04-21$5.20$7.158,800
2017-04-20$5.28$7.267,200
2017-04-19$5.34$7.3411,600
2017-04-18$5.31$7.3133,400
2017-04-17$5.29$7.2830,600
2017-04-13$5.18$7.1346,000
2017-04-12$5.01$6.8970,600
2017-04-11$5.08$6.996,600
2017-04-10$5.08$6.999,200
2017-04-07$5.10$7.026,200
2017-04-06$5.14$7.079,400
2017-04-05$5.21$7.166,200
2017-04-04$5.10$7.012,400
2017-04-03$5.09$7.0017,200
2017-03-31$5.21$7.1716,800
2017-03-30$5.27$7.255,600
2017-03-29$5.21$7.1722,600
2017-03-28$5.09$7.004,400
2017-03-27$5.10$7.0145,600
2017-03-24$5.23$7.198,400
2017-03-23$5.30$7.299,400
2017-03-22$5.32$7.3216,800
2017-03-21$5.39$7.4113,400
2017-03-20$5.55$7.6426,000
2017-03-17$5.47$7.5229,400
2017-03-16$5.56$7.6555,800
2017-03-15$5.43$7.4759,000
2017-03-14$5.33$7.33139,000
2017-03-13$5.30$7.29292,800
2017-03-10$4.27$5.8716,200
2017-03-09$4.36$5.9910,400
2017-03-08$4.40$6.0511,000
2017-03-07$4.36$5.9911,600
2017-03-06$4.40$6.0530,800
2017-03-03$4.55$6.2628,400
2017-03-02$4.43$6.0937,400
2017-03-01$4.30$5.9124,800
2017-02-28$4.38$5.9547,200
2017-02-27$4.19$5.70144,400
2017-02-24$4.64$6.3172,200
2017-02-23$5.11$6.9560,800
2017-02-22$5.06$6.8822,200
2017-02-21$5.22$7.107,400
2017-02-17$5.19$7.054,400
2017-02-16$5.20$7.0612,800
2017-02-15$5.20$7.075,600
2017-02-14$5.20$7.0619,800
2017-02-13$5.07$6.8811,000
2017-02-10$5.15$6.993,600
2017-02-09$5.14$6.9933,800
2017-02-08$4.98$6.776,200
2017-02-07$4.93$6.7019,800
2017-02-06$4.97$6.7547,000
2017-02-03$4.95$6.7214,600
2017-02-02$4.98$6.7610,400
2017-02-01$4.99$6.7836,600
2017-01-31$5.09$6.917,800
2017-01-30$5.12$6.965,200
2017-01-27$5.18$7.037,400
2017-01-26$5.17$7.0234,800
2017-01-25$5.23$7.1127,400
2017-01-24$5.33$7.1627,200
2017-01-23$5.26$7.0810,000
2017-01-20$5.32$7.151,400
2017-01-19$5.23$7.049,000
2017-01-18$5.17$6.9526,200
2017-01-17$5.23$7.0415,200
2017-01-13$5.34$7.1837,600
2017-01-12$5.20$6.9925,600
2017-01-11$5.22$7.028,800
2017-01-10$5.21$7.0110,200
2017-01-09$5.11$6.8719,600
2017-01-06$5.13$6.8924,400
2017-01-05$5.10$6.8613,200
2017-01-04$5.14$6.9125,000
2017-01-03$5.17$6.9522,600