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 — 2000

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2000-12-29$3.13$3.1345,825
2000-12-28$2.63$2.6336,700
2000-12-27$3.00$3.0039,250
2000-12-26$3.00$3.0016,950
2000-12-22$3.63$3.6313,000
2000-12-21$3.50$3.5013,200
2000-12-20$3.50$3.5016,650
2000-12-19$3.75$3.758,325
2000-12-18$3.88$3.8823,675
2000-12-15$3.00$3.0013,675
2000-12-14$3.50$3.5011,225
2000-12-13$4.00$4.008,650
2000-12-12$4.13$4.1312,400
2000-12-11$4.25$4.257,825
2000-12-08$4.38$4.3810,550
2000-12-07$4.38$4.3834,125
2000-12-06$4.25$4.2598,725
2000-12-05$4.00$4.0011,500
2000-12-04$4.00$4.007,900
2000-12-01$3.63$3.639,000
2000-11-30$4.25$4.2511,675
2000-11-29$4.13$4.138,875
2000-11-28$4.75$4.7511,875
2000-11-27$5.00$5.008,575
2000-11-24$4.88$4.8810,175
2000-11-22$4.50$4.5011,300
2000-11-21$4.63$4.634,975
2000-11-20$4.50$4.504,850
2000-11-17$5.00$5.007,025
2000-11-16$5.75$5.756,200
2000-11-15$5.38$5.3813,750
2000-11-14$5.00$5.009,650
2000-11-13$4.75$4.752,575
2000-11-10$5.00$5.007,675
2000-11-09$5.00$5.005,925
2000-11-08$5.50$5.50550
2000-11-07$5.50$5.5012,400
2000-11-06$5.50$5.5027,350
2000-11-03$5.50$5.50102,300
2000-11-02$5.50$5.5047,125
2000-11-01$5.50$5.5048,025
2000-10-31$5.50$5.503,075
2000-10-30$5.13$5.137,675
2000-10-27$5.50$5.501,475
2000-10-26$6.00$6.009,625
2000-10-25$6.50$6.506,600
2000-10-24$6.00$6.0023,550
2000-10-23$7.00$7.0015,350
2000-10-20$4.50$4.507,175
2000-10-19$4.25$4.2513,225
2000-10-18$4.75$4.7511,150
2000-10-17$4.88$4.883,025
2000-10-16$5.13$5.138,975
2000-10-13$5.13$5.1316,250
2000-10-12$5.75$5.758,375
2000-10-11$5.75$5.754,100
2000-10-10$5.75$5.7510,450
2000-10-09$5.88$5.881,125
2000-10-06$5.75$5.7517,825
2000-10-05$5.88$5.8824,925
2000-10-04$5.88$5.889,800
2000-10-03$6.00$6.001,600
2000-10-02$6.00$6.002,825
2000-09-29$6.00$6.0037,375
2000-09-28$6.13$6.1313,500
2000-09-27$6.13$6.1311,575
2000-09-26$6.50$6.506,950
2000-09-25$6.25$6.258,750
2000-09-22$6.13$6.1310,000
2000-09-21$6.13$6.138,475
2000-09-20$6.38$6.3811,825
2000-09-19$6.50$6.5013,350
2000-09-18$6.25$6.258,750
2000-09-15$6.50$6.5018,525
2000-09-14$6.75$6.752,850
2000-09-13$7.00$7.004,000
2000-09-12$7.00$7.0036,675
2000-09-11$7.38$7.3812,825
2000-09-08$7.75$7.7514,825
2000-09-07$7.50$7.5014,000
2000-09-06$7.25$7.252,625
2000-09-05$7.00$7.008,075
2000-09-01$7.38$7.386,725
2000-08-31$7.13$7.1358,325
2000-08-30$7.00$7.008,150
2000-08-29$7.50$7.5026,525
2000-08-28$7.13$7.137,775
2000-08-25$6.75$6.751,550
2000-08-24$6.75$6.755,900
2000-08-23$6.75$6.7529,750
2000-08-22$7.00$7.0023,450
2000-08-21$7.25$7.2525,525
2000-08-18$8.00$8.0033,525
2000-08-17$6.63$6.6377,525
2000-08-16$6.00$6.0010,950
2000-08-15$6.13$6.133,150
2000-08-14$6.25$6.252,500
2000-08-11$6.50$6.5017,150
2000-08-10$6.13$6.133,575
2000-08-09$6.50$6.501,075
2000-08-08$6.38$6.381,925
2000-08-07$6.25$6.2519,325
2000-08-04$6.50$6.509,850
2000-08-03$6.00$6.009,825
2000-08-02$6.50$6.505,150
2000-08-01$6.75$6.7512,650
2000-07-31$7.00$7.0023,050
2000-07-28$7.13$7.137,150
2000-07-27$7.25$7.2515,375
2000-07-26$7.50$7.504,775
2000-07-25$7.25$7.255,300
2000-07-24$7.50$7.507,125
2000-07-21$6.63$6.6320,925
2000-07-20$7.25$7.253,750
2000-07-19$7.50$7.505,325
2000-07-18$7.00$7.007,400
2000-07-17$7.50$7.506,225
2000-07-14$7.25$7.2512,800
2000-07-13$7.50$7.5024,475
2000-07-12$7.00$7.0019,275
2000-07-11$7.13$7.134,975
2000-07-10$7.00$7.004,050
2000-07-07$6.75$6.752,650
2000-07-06$6.50$6.504,175
2000-07-05$6.75$6.757,875
2000-07-03$7.00$7.007,325
2000-06-30$7.00$7.009,775
2000-06-29$6.25$6.25375
2000-06-28$6.25$6.254,375
2000-06-27$6.00$6.007,875
2000-06-26$6.13$6.131,325
2000-06-23$6.50$6.507,500
2000-06-22$6.25$6.255,800
2000-06-21$6.75$6.759,500
2000-06-20$6.25$6.252,000
2000-06-19$6.25$6.251,225
2000-06-16$6.13$6.137,075
2000-06-15$6.00$6.003,700
2000-06-14$6.00$6.0011,175
2000-06-13$6.00$6.0010,700
2000-06-12$6.25$6.254,250
2000-06-09$6.38$6.3810,150
2000-06-08$5.75$5.7526,325
2000-06-07$5.25$5.2521,675
2000-06-06$4.88$4.887,950
2000-06-05$5.13$5.1310,400
2000-06-02$5.00$5.0012,975
2000-06-01$5.25$5.258,250
2000-05-31$5.25$5.253,575
2000-05-30$5.50$5.505,500
2000-05-26$5.00$5.008,150
2000-05-25$5.00$5.008,550
2000-05-24$5.00$5.0019,750
2000-05-23$5.50$5.5017,150
2000-05-22$5.75$5.757,275
2000-05-19$6.00$6.0046,925
2000-05-18$6.25$6.252,525
2000-05-17$6.63$6.633,700
2000-05-16$7.13$7.1319,375
2000-05-15$6.13$6.1317,025
2000-05-12$6.75$6.753,625
2000-05-11$7.00$7.0021,150
2000-05-10$6.63$6.6325,725
2000-05-09$7.00$7.0021,650
2000-05-08$7.19$7.1921,300
2000-05-05$6.13$6.1334,575
2000-05-04$6.13$6.1319,750
2000-05-03$6.00$6.0038,600
2000-05-02$6.50$6.508,275
2000-05-01$6.75$6.752,650
2000-04-28$7.00$7.002,925
2000-04-27$7.13$7.138,525
2000-04-26$6.75$6.757,100
2000-04-25$6.75$6.7515,600
2000-04-24$7.50$7.509,400
2000-04-20$6.63$6.636,275
2000-04-19$6.50$6.5015,000
2000-04-18$6.75$6.7527,025
2000-04-17$6.00$6.0022,500
2000-04-14$6.50$6.5027,025
2000-04-13$7.00$7.0021,400
2000-04-12$7.13$7.136,825
2000-04-11$7.25$7.2518,450
2000-04-10$7.25$7.2528,400
2000-04-07$7.00$7.0051,050
2000-04-06$7.00$7.00127,000
2000-04-05$6.50$6.5094,400
2000-04-04$6.50$6.5046,500
2000-04-03$7.75$7.7534,450
2000-03-31$10.00$10.0016,800
2000-03-30$10.75$10.7510,275
2000-03-29$10.50$10.509,825
2000-03-28$11.63$11.639,625
2000-03-27$12.13$12.139,550
2000-03-24$12.38$12.3822,200
2000-03-23$11.50$11.5020,825
2000-03-22$10.75$10.7522,175
2000-03-21$10.50$10.5017,350
2000-03-20$11.00$11.0017,850
2000-03-17$12.50$12.5019,800
2000-03-16$12.00$12.0024,700
2000-03-15$12.50$12.5026,325
2000-03-14$13.00$13.0042,050
2000-03-13$15.00$15.0068,225
2000-03-10$15.00$15.00282,800
2000-03-09$13.50$13.50545,725
2000-03-08$8.00$8.0037,375
2000-03-07$7.75$7.7583,175
2000-03-06$9.50$9.5078,800
2000-03-03$11.00$11.0019,675
2000-03-02$10.00$10.0020,450
2000-03-01$10.50$10.5011,500
2000-02-29$10.75$10.754,400
2000-02-28$10.00$10.007,925
2000-02-25$10.88$10.8821,325
2000-02-24$11.25$11.259,000
2000-02-23$12.25$12.2545,525
2000-02-22$11.75$11.7576,650
2000-02-18$10.00$10.0026,000
2000-02-17$9.13$9.1315,650
2000-02-16$10.00$10.0012,325
2000-02-15$10.50$10.5017,025
2000-02-14$10.75$10.7514,375
2000-02-11$10.50$10.5014,925
2000-02-10$11.00$11.0027,475
2000-02-09$10.50$10.5072,300
2000-02-08$10.75$10.7520,125
2000-02-07$10.50$10.5015,975
2000-02-04$11.00$11.0016,950
2000-02-03$11.38$11.3842,875
2000-02-02$11.25$11.2512,675
2000-02-01$10.25$10.2515,200
2000-01-31$10.75$10.7531,225
2000-01-28$10.50$10.5021,850
2000-01-27$11.25$11.2520,500
2000-01-26$11.25$11.2529,575
2000-01-25$12.00$12.0072,925
2000-01-24$12.75$12.75118,025
2000-01-21$11.38$11.38113,175
2000-01-20$9.00$9.00123,200
2000-01-19$8.50$8.50103,850
2000-01-18$6.25$6.2510,625
2000-01-14$5.50$5.5034,250
2000-01-13$5.50$5.5015,050
2000-01-12$5.00$5.0019,400
2000-01-11$5.38$5.3810,450
2000-01-10$5.00$5.009,650
2000-01-07$4.69$4.6915,725
2000-01-06$5.13$5.1332,575
2000-01-05$5.25$5.2518,800
2000-01-04$5.38$5.3837,725
2000-01-03$6.63$6.6313,100