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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$4.40$6.924,800
2021-12-30$4.37$6.8811,200
2021-12-29$4.13$6.5181,200
2021-12-28$4.19$6.5923,400
2021-12-27$4.12$6.4819,600
2021-12-23$4.30$6.7711,600
2021-12-22$4.16$6.559,200
2021-12-21$4.15$6.5310,200
2021-12-20$4.06$6.4014,000
2021-12-17$4.13$6.518,800
2021-12-16$4.11$6.4721,800
2021-12-15$4.05$6.3716,600
2021-12-14$4.07$6.409,000
2021-12-13$4.15$6.5422,600
2021-12-10$4.28$6.7419,800
2021-12-09$4.24$6.6730,400
2021-12-08$4.43$6.9731,800
2021-12-07$4.52$7.1134,000
2021-12-06$4.43$6.9711,600
2021-12-03$4.40$6.9311,400
2021-12-02$4.36$6.879,200
2021-12-01$4.40$6.936,200
2021-11-30$4.37$6.883,000
2021-11-29$4.41$6.9410,600
2021-11-26$4.52$7.1114,000
2021-11-24$4.40$6.9315,400
2021-11-23$4.38$6.891,600
2021-11-22$4.45$7.0036,800
2021-11-19$4.31$6.7834,200
2021-11-18$4.36$6.8718,600
2021-11-17$4.40$6.928,800
2021-11-16$4.47$7.0316,200
2021-11-15$4.47$7.0344,200
2021-11-12$4.65$7.3348,400
2021-11-11$4.34$6.8412,600
2021-11-10$4.37$6.884,600
2021-11-09$4.33$6.810
2021-11-08$4.33$6.812,600
2021-11-05$4.36$6.869,800
2021-11-04$4.33$6.81800
2021-11-03$4.32$6.811,400
2021-11-02$4.32$6.8113,200
2021-11-01$4.28$6.7412,800
2021-10-29$4.26$6.717,000
2021-10-28$4.26$6.712,800
2021-10-27$4.32$6.804,600
2021-10-26$4.30$6.77800
2021-10-25$4.30$6.778,800
2021-10-22$4.31$6.790
2021-10-21$4.31$6.79800
2021-10-20$4.28$6.74600
2021-10-19$4.38$6.891,400
2021-10-18$4.30$6.773,200
2021-10-15$4.41$6.943,400
2021-10-14$4.33$6.814,000
2021-10-13$4.33$6.82400
2021-10-12$4.33$6.823,800
2021-10-11$4.55$7.171,800
2021-10-08$4.46$7.023,600
2021-10-07$4.28$6.7416,000
2021-10-06$4.37$6.890
2021-10-05$4.37$6.892,000
2021-10-04$4.27$6.731,800
2021-10-01$4.26$6.702,800
2021-09-30$4.47$7.033,600
2021-09-29$4.35$6.852,600
2021-09-28$4.44$6.9910,600
2021-09-27$4.43$6.97600
2021-09-24$4.45$7.003,200
2021-09-23$4.37$6.892,600
2021-09-22$4.42$6.964,600
2021-09-21$4.38$6.8910,400
2021-09-20$4.52$7.125,000
2021-09-17$4.49$7.075,800
2021-09-16$4.50$7.089,600
2021-09-15$4.63$7.294,200
2021-09-14$4.54$7.145,600
2021-09-13$4.56$7.185,000
2021-09-10$4.72$7.445,000
2021-09-09$4.51$7.116,800
2021-09-08$4.63$7.2910,800
2021-09-07$4.66$7.3317,200
2021-09-03$4.60$7.255,800
2021-09-02$4.74$7.470
2021-09-01$4.74$7.476,200
2021-08-31$4.64$7.313,200
2021-08-30$4.64$7.313,000
2021-08-27$4.56$7.186,800
2021-08-26$4.68$7.378,600
2021-08-25$4.48$7.061,000
2021-08-24$4.59$7.2320,800
2021-08-23$4.53$7.133,200
2021-08-20$4.44$7.001,200
2021-08-19$4.44$7.0011,400
2021-08-18$4.61$7.262,600
2021-08-17$4.44$7.0031,400
2021-08-16$4.81$7.577,400
2021-08-13$4.65$7.331,600
2021-08-12$4.95$7.7929,800
2021-08-11$4.73$7.454,200
2021-08-10$4.97$7.8312,800
2021-08-09$5.23$8.238,400
2021-08-06$5.15$8.110
2021-08-05$5.15$8.1129,200
2021-08-04$5.12$8.073,000
2021-08-03$5.02$7.914,600
2021-08-02$5.11$8.056,200
2021-07-30$5.09$8.028,000
2021-07-29$5.36$8.446,000
2021-07-28$5.10$8.042,800
2021-07-27$5.30$8.357,600
2021-07-26$5.16$8.131,800
2021-07-23$5.13$8.07200
2021-07-22$5.13$8.075,600
2021-07-21$5.19$8.185,400
2021-07-20$5.21$8.218,000
2021-07-19$5.25$8.268,800
2021-07-16$5.07$7.993,200
2021-07-15$5.10$8.0413,200
2021-07-14$5.19$8.188,400
2021-07-13$5.41$8.5223,000
2021-07-12$5.20$8.1815,800
2021-07-09$5.28$8.314,600
2021-07-08$5.05$7.9517,000
2021-07-07$5.43$8.55600
2021-07-06$5.29$8.331,200
2021-07-02$5.29$8.335,000
2021-07-01$5.25$8.276,600
2021-06-30$5.28$8.3230,800
2021-06-29$5.71$9.0046,800
2021-06-28$5.75$9.0614,800
2021-06-25$5.80$9.149,400
2021-06-24$5.80$9.148,200
2021-06-23$5.72$9.0121,000
2021-06-22$5.60$8.8221,000
2021-06-21$5.47$8.6127,600
2021-06-18$5.37$8.451,600
2021-06-17$5.41$8.525,400
2021-06-16$5.48$8.634,200
2021-06-15$5.57$8.786,200
2021-06-14$5.64$8.8932,200
2021-06-11$5.66$8.9241,800
2021-06-10$5.69$8.9614,800
2021-06-09$5.69$8.9610,200
2021-06-08$5.61$8.834,200
2021-06-07$5.65$8.892,800
2021-06-04$5.40$8.5111,800
2021-06-03$5.38$8.486,400
2021-06-02$5.24$8.265,200
2021-06-01$5.12$8.069,800
2021-05-28$5.11$8.0410,800
2021-05-27$5.00$7.8820,000
2021-05-26$5.12$8.0630,800
2021-05-25$5.38$8.4720,600
2021-05-24$5.29$8.336,000
2021-05-21$5.45$8.592,800
2021-05-20$5.40$8.507,200
2021-05-19$5.48$8.6317,800
2021-05-18$5.53$8.7051,600
2021-05-17$5.43$8.5552,400
2021-05-14$5.18$8.1513,200
2021-05-13$4.94$7.7822,400
2021-05-12$4.79$7.5522,000
2021-05-11$4.63$7.2971,800
2021-05-10$4.62$7.2836,200
2021-05-07$4.33$6.8114,200
2021-05-06$4.34$6.849,800
2021-05-05$4.40$6.926,400
2021-05-04$4.36$6.877,000
2021-05-03$4.30$6.772,400
2021-04-30$4.49$7.0740,600
2021-04-29$4.75$7.4816,000
2021-04-28$4.85$7.644,600
2021-04-27$4.78$7.525,400
2021-04-26$4.75$7.4818,800
2021-04-23$4.74$7.4713,800
2021-04-22$4.77$7.525,000
2021-04-21$4.66$7.334,600
2021-04-20$4.79$7.5413,600
2021-04-19$4.63$7.298,600
2021-04-16$4.50$7.0815,200
2021-04-15$4.31$6.78200
2021-04-14$4.31$6.785,200
2021-04-13$4.29$6.7517,800
2021-04-12$4.24$6.6736,200
2021-04-09$4.35$6.8515,000
2021-04-08$4.29$6.7522,600
2021-04-07$4.41$6.9519,400
2021-04-06$4.43$6.9814,600
2021-04-05$4.40$6.939,000
2021-04-01$4.36$6.875,000
2021-03-31$4.35$6.855,200
2021-03-30$4.29$6.7552,600
2021-03-29$4.01$6.329,000
2021-03-26$3.98$6.2711,600
2021-03-25$4.00$6.3010,400
2021-03-24$4.08$6.424,600
2021-03-23$4.00$6.3013,000
2021-03-22$4.25$6.703,800
2021-03-19$4.44$6.9912,000
2021-03-18$4.27$6.727,400
2021-03-17$4.26$6.7120,400
2021-03-16$4.26$6.709,200
2021-03-15$4.32$6.818,400
2021-03-12$4.30$6.7712,200
2021-03-11$4.21$6.6315,400
2021-03-10$4.10$6.4614,200
2021-03-09$3.99$6.2917,000
2021-03-08$3.99$6.2827,000
2021-03-05$4.00$6.3025,200
2021-03-04$4.00$6.2913,800
2021-03-03$4.05$6.3745,400
2021-03-02$4.23$6.6678,400
2021-03-01$4.06$6.4010,400
2021-02-26$4.20$6.6129,200
2021-02-25$4.35$6.8512,400
2021-02-24$4.40$6.9218,000
2021-02-23$4.11$6.4898,400
2021-02-22$4.33$6.8174,600
2021-02-19$4.60$7.2416,000
2021-02-18$4.55$7.1768,800
2021-02-17$5.06$7.9633,800
2021-02-16$5.20$8.1874,800
2021-02-12$5.01$7.8953,800
2021-02-11$5.41$8.5286,400
2021-02-10$6.00$9.4520,200
2021-02-09$5.84$9.1965,800
2021-02-08$5.57$8.7724,800
2021-02-05$5.28$8.3122,800
2021-02-04$5.07$7.9910,600
2021-02-03$5.23$8.2324,200
2021-02-02$5.13$8.0719,800
2021-02-01$5.20$8.1957,000
2021-01-29$4.98$7.8421,400
2021-01-28$5.05$7.9620,000
2021-01-27$5.21$8.207,600
2021-01-26$5.17$8.1450,200
2021-01-25$5.31$8.3628,000
2021-01-22$5.65$8.9069,800
2021-01-21$6.03$9.5037,600
2021-01-20$6.06$9.5455,600
2021-01-19$6.38$10.05153,600
2021-01-15$5.72$9.0043,000
2021-01-14$5.20$8.1927,000
2021-01-13$4.97$7.8215,200
2021-01-12$4.97$7.8332,800
2021-01-11$4.68$7.3736,400
2021-01-08$4.50$7.086,600
2021-01-07$4.46$7.0216,600
2021-01-06$4.37$6.8926,600
2021-01-05$4.35$6.8541,200
2021-01-04$4.02$6.3321,800