OTC:CYAN | Historical Stock Price | CYANOTECH CORP

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
1991-05-21 to 2026-08-27
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.23$0.69$2.06$6.21$18.69$56.241991-05-212026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2001

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2001-12-31$4.00$4.0014,725
2001-12-28$3.80$3.803,875
2001-12-27$3.60$3.603,850
2001-12-26$4.00$4.005,450
2001-12-24$4.20$4.206,350
2001-12-21$3.96$3.9628,200
2001-12-20$4.00$4.0060,225
2001-12-19$2.48$2.487,750
2001-12-18$2.60$2.601,825
2001-12-17$2.60$2.6010,250
2001-12-14$2.68$2.686,675
2001-12-13$2.88$2.882,175
2001-12-12$2.80$2.807,350
2001-12-11$2.76$2.76475
2001-12-10$2.80$2.801,375
2001-12-07$2.88$2.882,675
2001-12-06$2.68$2.681,625
2001-12-05$2.84$2.849,400
2001-12-04$2.92$2.925,150
2001-12-03$2.60$2.60500
2001-11-30$2.60$2.605,600
2001-11-29$2.72$2.723,050
2001-11-28$2.80$2.808,200
2001-11-27$2.88$2.885,925
2001-11-26$3.08$3.081,125
2001-11-23$3.12$3.12575
2001-11-21$3.16$3.162,300
2001-11-20$3.08$3.08925
2001-11-19$3.08$3.081,800
2001-11-16$3.08$3.083,400
2001-11-15$3.00$3.002,175
2001-11-14$2.92$2.9250
2001-11-13$2.92$2.9211,975
2001-11-12$3.16$3.161,625
2001-11-09$3.16$3.16325
2001-11-08$3.16$3.161,225
2001-11-07$3.16$3.162,425
2001-11-06$3.20$3.207,950
2001-11-05$3.44$3.442,475
2001-11-02$3.24$3.242,200
2001-11-01$3.44$3.442,650
2001-10-31$3.44$3.441,100
2001-10-30$3.20$3.208,450
2001-10-29$3.32$3.321,325
2001-10-26$3.28$3.285,675
2001-10-25$3.60$3.6010,725
2001-10-24$4.08$4.084,500
2001-10-23$4.20$4.2015,050
2001-10-22$3.84$3.8429,625
2001-10-19$3.12$3.1216,550
2001-10-18$2.80$2.806,200
2001-10-17$2.72$2.722,200
2001-10-16$2.64$2.643,775
2001-10-15$2.60$2.605,350
2001-10-12$2.76$2.7610,050
2001-10-11$2.72$2.726,400
2001-10-10$2.20$2.2013,550
2001-10-09$2.60$2.602,450
2001-10-08$2.36$2.362,700
2001-10-05$2.60$2.602,800
2001-10-04$2.84$2.8425,475
2001-10-03$2.92$2.924,450
2001-10-02$2.80$2.808,700
2001-10-01$2.48$2.483,450
2001-09-28$2.24$2.2410,425
2001-09-27$2.00$2.006,050
2001-09-26$2.20$2.20900
2001-09-25$2.00$2.008,250
2001-09-24$2.00$2.0016,200
2001-09-21$2.00$2.0026,550
2001-09-20$2.16$2.1626,125
2001-09-19$2.00$2.008,525
2001-09-18$2.40$2.408,650
2001-09-17$2.40$2.4017,600
2001-09-10$2.60$2.6018,025
2001-09-07$3.12$3.1227,475
2001-09-06$2.68$2.6839,625
2001-09-05$3.88$3.881,300
2001-09-04$3.88$3.883,000
2001-08-31$4.00$4.0024,425
2001-08-30$3.92$3.92550
2001-08-29$3.88$3.8825
2001-08-28$3.96$3.966,300
2001-08-27$4.12$4.12775
2001-08-24$4.12$4.1211,575
2001-08-23$4.20$4.202,650
2001-08-22$4.20$4.208,725
2001-08-21$4.28$4.286,925
2001-08-20$4.40$4.401,250
2001-08-17$4.20$4.204,625
2001-08-16$4.36$4.361,850
2001-08-15$4.20$4.20400
2001-08-14$4.08$4.084,025
2001-08-13$4.40$4.401,550
2001-08-10$4.32$4.322,875
2001-08-09$4.40$4.403,325
2001-08-08$4.20$4.202,800
2001-08-07$4.40$4.406,450
2001-08-06$4.60$4.603,200
2001-08-03$4.68$4.683,175
2001-08-02$4.76$4.761,775
2001-08-01$4.32$4.324,700
2001-07-31$4.20$4.2014,000
2001-07-30$4.48$4.488,300
2001-07-27$4.60$4.609,325
2001-07-26$4.88$4.887,575
2001-07-25$4.96$4.963,950
2001-07-24$4.96$4.961,325
2001-07-23$4.84$4.843,475
2001-07-20$4.80$4.802,625
2001-07-19$4.88$4.884,175
2001-07-18$4.80$4.807,000
2001-07-17$5.04$5.0414,625
2001-07-16$5.12$5.129,125
2001-07-13$5.12$5.123,550
2001-07-12$5.00$5.006,825
2001-07-11$5.40$5.4013,975
2001-07-10$5.00$5.0014,850
2001-07-09$5.12$5.125,350
2001-07-06$5.44$5.44525
2001-07-05$5.60$5.604,500
2001-07-03$5.88$5.88625
2001-07-02$5.48$5.482,350
2001-06-29$5.32$5.323,925
2001-06-28$5.92$5.924,500
2001-06-27$5.52$5.526,125
2001-06-26$5.60$5.6012,925
2001-06-25$5.56$5.565,575
2001-06-22$5.40$5.406,725
2001-06-21$5.20$5.202,600
2001-06-20$5.16$5.163,950
2001-06-19$5.20$5.2014,175
2001-06-18$5.36$5.362,425
2001-06-15$5.60$5.6011,825
2001-06-14$5.40$5.406,525
2001-06-13$6.00$6.001,925
2001-06-12$6.36$6.368,525
2001-06-11$6.24$6.246,775
2001-06-08$6.40$6.409,550
2001-06-07$6.40$6.409,700
2001-06-06$6.20$6.207,100
2001-06-05$6.08$6.0813,775
2001-06-04$6.44$6.4429,300
2001-06-01$5.80$5.8037,900
2001-05-31$5.60$5.6032,125
2001-05-30$5.04$5.049,350
2001-05-29$5.68$5.6837,150
2001-05-25$5.12$5.1223,150
2001-05-24$5.08$5.0848,525
2001-05-23$4.72$4.7211,550
2001-05-22$4.64$4.645,325
2001-05-21$4.84$4.8434,325
2001-05-18$4.24$4.243,750
2001-05-17$4.16$4.163,100
2001-05-16$4.20$4.201,625
2001-05-15$4.40$4.407,500
2001-05-14$4.20$4.202,800
2001-05-11$4.40$4.407,800
2001-05-10$4.36$4.364,350
2001-05-09$4.32$4.3212,525
2001-05-08$4.20$4.2023,325
2001-05-07$4.68$4.686,700
2001-05-04$4.80$4.803,900
2001-05-03$4.68$4.683,800
2001-05-02$4.92$4.9225,250
2001-05-01$5.00$5.0049,175
2001-04-30$4.04$4.0413,975
2001-04-27$4.08$4.081,750
2001-04-26$4.04$4.048,850
2001-04-25$4.00$4.005,950
2001-04-24$4.00$4.0011,800
2001-04-23$4.00$4.0012,225
2001-04-20$4.12$4.1218,450
2001-04-19$4.04$4.041,675
2001-04-18$4.24$4.245,050
2001-04-17$4.16$4.1615,900
2001-04-16$4.32$4.3231,325
2001-04-12$4.12$4.1210,250
2001-04-11$3.96$3.962,350
2001-04-10$3.68$3.685,650
2001-04-09$3.72$3.722,150
2001-04-06$3.75$3.754,625
2001-04-05$3.88$3.885,600
2001-04-04$3.63$3.633,700
2001-04-03$3.50$3.508,750
2001-04-02$4.00$4.004,025
2001-03-30$4.13$4.13850
2001-03-29$4.13$4.13675
2001-03-28$4.00$4.00750
2001-03-27$4.13$4.138,675
2001-03-26$3.88$3.887,775
2001-03-23$3.63$3.632,150
2001-03-22$3.63$3.637,725
2001-03-21$3.88$3.882,250
2001-03-20$4.00$4.001,925
2001-03-19$4.00$4.004,100
2001-03-16$4.00$4.0021,150
2001-03-15$4.25$4.2512,950
2001-03-14$4.38$4.383,525
2001-03-13$5.00$5.0013,250
2001-03-12$4.75$4.757,700
2001-03-09$4.25$4.255,175
2001-03-08$4.38$4.383,400
2001-03-07$4.38$4.386,925
2001-03-06$4.38$4.3814,375
2001-03-05$3.88$3.8810,475
2001-03-02$3.63$3.632,350
2001-03-01$3.50$3.501,350
2001-02-28$3.75$3.751,600
2001-02-27$3.75$3.752,925
2001-02-26$4.00$4.007,200
2001-02-23$3.50$3.5010,700
2001-02-22$3.88$3.883,300
2001-02-21$3.50$3.501,975
2001-02-20$3.50$3.505,175
2001-02-16$3.38$3.3824,875
2001-02-15$4.00$4.008,650
2001-02-14$4.00$4.0033,375
2001-02-13$3.50$3.50975
2001-02-12$3.75$3.751,400
2001-02-09$3.50$3.5011,000
2001-02-08$3.38$3.387,025
2001-02-07$3.31$3.311,850
2001-02-06$3.44$3.44250
2001-02-05$3.50$3.507,750
2001-02-02$3.50$3.505,100
2001-02-01$3.75$3.755,025
2001-01-31$3.50$3.506,425
2001-01-30$3.50$3.509,575
2001-01-29$3.75$3.753,275
2001-01-26$3.63$3.635,550
2001-01-25$4.00$4.0016,175
2001-01-24$3.63$3.638,100
2001-01-23$3.25$3.2521,400
2001-01-22$3.50$3.5017,625
2001-01-19$3.25$3.258,825
2001-01-18$3.25$3.253,850
2001-01-17$3.50$3.505,450
2001-01-16$3.25$3.251,825
2001-01-12$3.63$3.633,275
2001-01-11$3.63$3.6316,800
2001-01-10$3.25$3.2525
2001-01-09$3.25$3.253,475
2001-01-08$3.13$3.1310,225
2001-01-05$3.75$3.757,775
2001-01-04$3.75$3.752,925
2001-01-03$3.75$3.755,425
2001-01-02$3.75$3.759,550