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 — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$12.50$20.3616,000
2025-12-30$12.76$20.789,900
2025-12-29$12.97$21.1311,000
2025-12-26$13.01$21.1911,000
2025-12-24$13.04$21.197,000
2025-12-23$13.02$21.1624,400
2025-12-22$13.06$21.2228,500
2025-12-19$13.41$21.7969,000
2025-12-18$12.87$20.9116,600
2025-12-17$12.70$20.647,300
2025-12-16$12.65$20.5679,300
2025-12-15$14.96$24.3124,700
2025-12-12$14.39$23.3932,700
2025-12-11$14.87$24.1717,900
2025-12-10$14.58$23.6924,100
2025-12-09$14.75$23.9735,600
2025-12-08$13.71$22.2822,900
2025-12-05$12.86$20.9019,200
2025-12-04$11.96$19.4414,500
2025-12-03$11.45$18.616,500
2025-12-02$11.13$18.094,200
2025-12-01$11.36$18.469,600
2025-11-28$11.46$18.625,200
2025-11-26$11.45$18.6127,900
2025-11-25$11.59$18.8312,400
2025-11-24$11.11$18.058,100
2025-11-21$11.30$18.3612,500
2025-11-20$10.90$17.7112,700
2025-11-19$10.93$17.7613,300
2025-11-18$11.07$17.9912,500
2025-11-17$10.95$17.7919,300
2025-11-14$11.21$18.2222,800
2025-11-13$11.48$18.6626,300
2025-11-12$11.53$18.7419,300
2025-11-11$11.63$18.904,400
2025-11-10$11.70$19.013,700
2025-11-07$11.25$18.2815,000
2025-11-06$11.26$18.3033,100
2025-11-05$11.99$19.4819,600
2025-11-04$12.11$19.6817,400
2025-11-03$12.77$20.758,200
2025-10-31$13.34$21.689,800
2025-10-30$13.04$21.1912,300
2025-10-29$13.36$21.7132,700
2025-10-28$13.41$21.7917,000
2025-10-27$13.55$22.0222,400
2025-10-24$13.47$21.8914,300
2025-10-23$12.69$20.6287,500
2025-10-22$11.71$19.0316,100
2025-10-21$11.28$18.336,500
2025-10-20$11.53$18.7421,400
2025-10-17$11.10$18.0413,800
2025-10-16$11.25$18.2811,200
2025-10-15$11.76$19.1111,700
2025-10-14$11.30$18.3611,900
2025-10-13$11.53$18.7418,900
2025-10-10$11.31$18.3817,000
2025-10-09$11.57$18.805,900
2025-10-08$12.31$20.0018,900
2025-10-07$11.47$18.6427,400
2025-10-06$11.41$18.5416,200
2025-10-03$12.01$19.5212,600
2025-10-02$11.59$18.838,200
2025-10-01$11.75$19.0917,000
2025-09-30$11.55$18.7722,700
2025-09-29$12.01$19.527,300
2025-09-26$12.37$20.109,700
2025-09-25$12.32$20.0211,200
2025-09-24$12.56$20.419,600
2025-09-23$12.66$20.5720,400
2025-09-22$13.41$21.7934,600
2025-09-19$13.31$21.6399,100
2025-09-18$13.05$21.2130,500
2025-09-17$12.18$19.7920,600
2025-09-16$11.55$18.7715,400
2025-09-15$11.28$18.3324,100
2025-09-12$11.20$18.2014,400
2025-09-11$11.60$18.8514,900
2025-09-10$10.96$17.819,900
2025-09-09$10.88$17.6817,400
2025-09-08$11.17$18.1520,100
2025-09-05$11.37$18.4816,700
2025-09-04$11.56$18.7911,100
2025-09-03$11.41$18.5419,200
2025-09-02$12.13$19.7197,800
2025-08-29$12.06$19.6010,300
2025-08-28$12.39$20.0911,500
2025-08-27$12.67$20.5419,500
2025-08-26$12.56$20.3615,700
2025-08-25$12.54$20.3311,100
2025-08-22$12.74$20.6520,000
2025-08-21$11.81$19.155,300
2025-08-20$11.47$18.5914,800
2025-08-19$11.22$18.1911,600
2025-08-18$11.65$18.8912,800
2025-08-15$12.13$19.6663,600
2025-08-14$12.13$19.6632,000
2025-08-13$11.45$18.5646,600
2025-08-12$11.16$18.0923,300
2025-08-11$10.73$17.4011,800
2025-08-08$10.93$17.7231,000
2025-08-07$10.78$17.4812,000
2025-08-06$10.61$17.207,000
2025-08-05$10.50$17.0222,300
2025-08-04$10.38$16.8317,100
2025-08-01$10.14$16.4417,800
2025-07-31$10.26$16.6324,300
2025-07-30$10.80$17.5114,500
2025-07-29$10.98$17.8013,100
2025-07-28$11.35$18.4014,400
2025-07-25$11.04$17.9023,300
2025-07-24$11.57$18.7616,400
2025-07-23$11.88$19.269,600
2025-07-22$11.71$18.9810,700
2025-07-21$11.89$19.2825,300
2025-07-18$11.35$18.4021,400
2025-07-17$11.56$18.7415,300
2025-07-16$11.60$18.8111,700
2025-07-15$11.60$18.8121,800
2025-07-14$11.92$19.3215,900
2025-07-11$12.01$19.4716,400
2025-07-10$11.95$19.3721,200
2025-07-09$12.06$19.5542,700
2025-07-08$12.10$19.6235,500
2025-07-07$12.62$20.4619,000
2025-07-03$12.84$20.8223,200
2025-07-02$12.06$19.5528,200
2025-07-01$12.23$19.8329,700
2025-06-30$12.94$20.9879,700
2025-06-27$11.28$18.29803,800
2025-06-26$10.72$17.3846,000
2025-06-25$10.68$17.3148,600
2025-06-24$11.23$18.2160,100
2025-06-23$10.74$17.4140,600
2025-06-20$11.28$18.2925,100
2025-06-18$11.44$18.5529,100
2025-06-17$11.29$18.3017,500
2025-06-16$11.62$18.8430,500
2025-06-13$11.67$18.9241,400
2025-06-12$11.97$19.4118,500
2025-06-11$12.55$20.3583,200
2025-06-10$12.25$19.8652,400
2025-06-09$11.85$19.2165,100
2025-06-06$13.32$21.5933,400
2025-06-05$13.86$22.4718,500
2025-06-04$13.81$22.3937,000
2025-06-03$14.42$23.3817,700
2025-06-02$14.74$23.9012,200
2025-05-30$15.22$24.6713,500
2025-05-29$15.12$24.5117,200
2025-05-28$14.75$23.9122,500
2025-05-27$14.82$23.9822,600
2025-05-23$14.62$23.6512,800
2025-05-22$14.37$23.2525,200
2025-05-21$15.43$24.9611,000
2025-05-20$15.32$24.7913,300
2025-05-19$15.03$24.327,800
2025-05-16$14.51$23.4821,000
2025-05-15$14.33$23.1830,300
2025-05-14$16.76$27.1253,900
2025-05-13$16.07$26.0013,300
2025-05-12$15.99$25.8719,500
2025-05-09$16.43$26.587,400
2025-05-08$16.24$26.2717,500
2025-05-07$15.83$25.6115,100
2025-05-06$16.74$27.0812,200
2025-05-05$16.52$26.737,700
2025-05-02$16.99$27.4913,200
2025-05-01$17.01$27.529,600
2025-04-30$16.64$26.9214,200
2025-04-29$17.14$27.7313,200
2025-04-28$17.14$27.7321,000
2025-04-25$16.45$26.618,300
2025-04-24$16.02$25.9210,100
2025-04-23$15.87$25.6818,300
2025-04-22$15.22$24.6221,100
2025-04-21$14.62$23.6510,300
2025-04-17$15.45$25.0015,300
2025-04-16$15.16$24.5316,700
2025-04-15$14.75$23.868,400
2025-04-14$15.18$24.5614,900
2025-04-11$14.63$23.6718,000
2025-04-10$14.57$23.5715,800
2025-04-09$15.41$24.9326,500
2025-04-08$13.73$22.2126,100
2025-04-07$13.71$22.1823,800
2025-04-04$13.52$21.8740,100
2025-04-03$14.77$23.9017,300
2025-04-02$15.62$25.2723,400
2025-04-01$15.05$24.3515,500
2025-03-31$15.34$24.8215,800
2025-03-28$15.35$24.8323,600
2025-03-27$15.49$25.0610,600
2025-03-26$15.36$24.8535,300
2025-03-25$15.78$25.5325,000
2025-03-24$16.78$27.1512,900
2025-03-21$16.98$27.4720,800
2025-03-20$17.32$28.0230,200
2025-03-19$17.84$28.8618,500
2025-03-18$17.31$28.0126,300
2025-03-17$17.15$27.7530,500
2025-03-14$16.06$25.9841,300
2025-03-13$15.70$25.4037,300
2025-03-12$16.04$25.9535,400
2025-03-11$15.50$25.0841,300
2025-03-10$15.29$24.7458,200
2025-03-07$16.26$26.3159,900
2025-03-06$15.43$24.9664,200
2025-03-05$15.92$25.7630,900
2025-03-04$15.25$24.6729,000
2025-03-03$15.82$25.5927,500
2025-02-28$16.55$26.7824,300
2025-02-27$16.31$26.3922,100
2025-02-26$16.76$27.1284,900
2025-02-25$15.69$25.3843,000
2025-02-24$16.01$25.9067,900
2025-02-21$17.31$27.9634,300
2025-02-20$17.78$28.7227,900
2025-02-19$18.04$29.1434,800
2025-02-18$18.74$30.2746,400
2025-02-14$19.33$31.2246,200
2025-02-13$18.93$30.5747,100
2025-02-12$19.92$32.1761,200
2025-02-11$20.10$32.4624,800
2025-02-10$19.76$31.9142,800
2025-02-07$19.65$31.7444,300
2025-02-06$20.82$33.6361,400
2025-02-05$20.33$32.8338,000
2025-02-04$18.95$30.6126,800
2025-02-03$19.28$31.1418,100
2025-01-31$19.98$32.2784,600
2025-01-30$17.52$28.3022,500
2025-01-29$17.46$28.2031,900
2025-01-28$16.62$26.8426,600
2025-01-27$16.46$26.5822,700
2025-01-24$16.96$27.3915,800
2025-01-23$16.91$27.3110,900
2025-01-22$17.14$27.6818,900
2025-01-21$16.86$27.2319,800
2025-01-17$16.25$26.2429,000
2025-01-16$15.78$25.4921,900
2025-01-15$15.58$25.1621,000
2025-01-14$15.68$25.3232,600
2025-01-13$15.52$25.0740,500
2025-01-10$16.61$26.8326,500
2025-01-08$16.76$27.0720,000
2025-01-07$17.27$27.8926,200
2025-01-06$17.48$28.2342,400
2025-01-03$17.65$28.5142,200
2025-01-02$16.59$26.7922,500