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 — 1998

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
1998-12-31$4.25$4.2513,000
1998-12-30$4.13$4.1315,050
1998-12-29$4.25$4.2520,000
1998-12-28$5.00$5.006,025
1998-12-24$5.25$5.252,450
1998-12-23$4.50$4.5016,150
1998-12-22$5.25$5.2554,175
1998-12-21$4.50$4.506,600
1998-12-18$4.50$4.508,525
1998-12-17$4.75$4.755,775
1998-12-16$4.50$4.506,900
1998-12-15$4.75$4.7511,800
1998-12-14$4.50$4.5011,500
1998-12-11$4.63$4.633,600
1998-12-10$4.50$4.501,350
1998-12-09$4.75$4.756,775
1998-12-08$4.75$4.757,550
1998-12-07$4.75$4.757,875
1998-12-04$4.75$4.752,725
1998-12-03$4.75$4.7514,400
1998-12-02$5.00$5.005,175
1998-12-01$5.25$5.2511,025
1998-11-30$5.00$5.007,975
1998-11-27$5.00$5.002,275
1998-11-25$5.25$5.253,675
1998-11-24$5.25$5.251,100
1998-11-23$5.13$5.137,725
1998-11-20$5.50$5.504,275
1998-11-19$5.75$5.7511,200
1998-11-18$6.13$6.132,850
1998-11-17$5.63$5.638,575
1998-11-16$5.25$5.254,100
1998-11-13$5.00$5.005,000
1998-11-12$5.00$5.001,025
1998-11-11$5.00$5.001,200
1998-11-10$5.00$5.00925
1998-11-09$4.88$4.881,275
1998-11-06$5.00$5.002,600
1998-11-05$5.13$5.1311,075
1998-11-04$4.88$4.887,925
1998-11-03$5.25$5.254,850
1998-11-02$4.88$4.888,625
1998-10-30$5.00$5.009,725
1998-10-29$4.88$4.8810,975
1998-10-28$5.00$5.004,725
1998-10-27$5.25$5.255,775
1998-10-26$5.50$5.509,825
1998-10-23$5.25$5.252,000
1998-10-22$5.00$5.009,175
1998-10-21$5.50$5.505,275
1998-10-20$5.25$5.2514,800
1998-10-19$3.88$3.8817,100
1998-10-16$3.88$3.8811,850
1998-10-15$4.00$4.0014,150
1998-10-14$4.00$4.0010,375
1998-10-13$5.00$5.00600
1998-10-12$5.50$5.507,500
1998-10-09$5.50$5.5010,500
1998-10-08$6.00$6.0022,750
1998-10-07$6.50$6.5010,750
1998-10-06$6.13$6.137,475
1998-10-05$6.13$6.134,200
1998-10-02$6.50$6.502,425
1998-10-01$6.75$6.753,000
1998-09-30$6.75$6.755,075
1998-09-29$6.25$6.252,300
1998-09-28$6.13$6.132,500
1998-09-25$6.75$6.754,375
1998-09-24$7.00$7.001,750
1998-09-23$7.00$7.003,175
1998-09-22$6.88$6.885,100
1998-09-21$7.38$7.388,250
1998-09-18$7.75$7.756,300
1998-09-17$6.50$6.502,000
1998-09-16$7.00$7.0019,275
1998-09-15$6.00$6.007,500
1998-09-14$6.88$6.883,450
1998-09-11$6.25$6.2511,900
1998-09-10$7.00$7.0019,625
1998-09-09$8.50$8.507,125
1998-09-08$8.50$8.502,875
1998-09-04$8.75$8.752,425
1998-09-03$8.25$8.255,975
1998-09-02$8.50$8.501,100
1998-09-01$9.25$9.252,600
1998-08-31$9.50$9.503,775
1998-08-28$9.50$9.505,675
1998-08-27$9.00$9.0010,925
1998-08-26$10.25$10.253,175
1998-08-25$9.50$9.502,175
1998-08-24$10.50$10.501,850
1998-08-21$10.25$10.257,075
1998-08-20$11.00$11.001,400
1998-08-19$10.00$10.002,175
1998-08-18$11.00$11.004,525
1998-08-17$10.25$10.254,625
1998-08-14$10.25$10.2515,325
1998-08-13$10.25$10.2513,375
1998-08-12$9.50$9.503,125
1998-08-11$9.00$9.006,900
1998-08-10$9.50$9.509,950
1998-08-07$10.50$10.503,375
1998-08-06$10.00$10.002,600
1998-08-05$9.75$9.756,150
1998-08-04$9.75$9.759,125
1998-08-03$9.75$9.756,825
1998-07-31$10.50$10.507,150
1998-07-30$10.50$10.502,350
1998-07-29$11.00$11.0010,575
1998-07-28$11.25$11.2512,350
1998-07-27$9.75$9.755,525
1998-07-24$10.50$10.5011,275
1998-07-23$10.50$10.507,175
1998-07-22$11.00$11.004,925
1998-07-21$11.50$11.5014,925
1998-07-20$12.00$12.0015,175
1998-07-17$12.00$12.007,600
1998-07-16$12.00$12.005,400
1998-07-15$12.00$12.008,475
1998-07-14$12.50$12.5012,625
1998-07-13$13.00$13.006,150
1998-07-10$13.50$13.501,475
1998-07-09$13.25$13.255,050
1998-07-08$13.75$13.7517,125
1998-07-07$12.25$12.257,350
1998-07-06$13.25$13.252,475
1998-07-02$13.00$13.001,475
1998-07-01$12.00$12.0014,925
1998-06-30$12.50$12.5010,600
1998-06-29$13.00$13.001,025
1998-06-26$13.50$13.503,000
1998-06-25$13.50$13.505,925
1998-06-24$14.63$14.637,675
1998-06-23$15.00$15.005,550
1998-06-22$14.50$14.507,450
1998-06-19$14.00$14.005,800
1998-06-18$14.00$14.002,675
1998-06-17$13.75$13.755,475
1998-06-16$14.00$14.00375
1998-06-15$13.50$13.502,475
1998-06-12$13.75$13.753,775
1998-06-11$13.75$13.75875
1998-06-10$14.00$14.007,725
1998-06-09$13.75$13.753,775
1998-06-08$13.75$13.756,475
1998-06-05$14.25$14.255,275
1998-06-04$13.50$13.5010,200
1998-06-03$14.50$14.507,275
1998-06-02$13.75$13.754,625
1998-06-01$13.50$13.504,550
1998-05-29$13.50$13.502,075
1998-05-28$13.00$13.005,200
1998-05-27$12.50$12.501,075
1998-05-26$14.00$14.00250
1998-05-22$13.00$13.008,175
1998-05-21$13.00$13.001,700
1998-05-20$13.00$13.007,525
1998-05-19$13.50$13.501,650
1998-05-18$13.75$13.7514,350
1998-05-15$15.00$15.0012,750
1998-05-14$15.25$15.251,400
1998-05-13$15.75$15.752,725
1998-05-12$15.75$15.758,425
1998-05-11$16.25$16.255,875
1998-05-08$16.25$16.253,475
1998-05-07$16.00$16.005,575
1998-05-06$15.50$15.506,175
1998-05-05$15.50$15.5014,900
1998-05-04$15.00$15.009,000
1998-05-01$15.00$15.005,825
1998-04-30$15.00$15.002,925
1998-04-29$14.00$14.0017,950
1998-04-28$15.00$15.001,925
1998-04-27$14.50$14.502,875
1998-04-24$14.50$14.505,150
1998-04-23$15.00$15.0010,025
1998-04-22$16.00$16.0011,225
1998-04-21$17.13$17.1313,475
1998-04-20$17.50$17.5021,175
1998-04-17$13.88$13.886,750
1998-04-16$14.25$14.251,150
1998-04-15$14.50$14.503,275
1998-04-14$15.00$15.0013,725
1998-04-13$14.75$14.757,125
1998-04-09$15.25$15.258,125
1998-04-08$15.00$15.003,200
1998-04-07$13.50$13.507,025
1998-04-06$13.63$13.635,600
1998-04-03$14.50$14.502,450
1998-04-02$13.75$13.755,800
1998-04-01$13.50$13.502,350
1998-03-31$13.75$13.753,525
1998-03-30$13.50$13.508,350
1998-03-27$13.75$13.754,600
1998-03-26$14.25$14.255,700
1998-03-25$15.00$15.004,350
1998-03-24$15.25$15.254,875
1998-03-23$14.50$14.504,900
1998-03-20$14.50$14.5026,725
1998-03-19$13.50$13.5039,275
1998-03-18$12.13$12.138,650
1998-03-17$12.00$12.009,675
1998-03-16$12.75$12.754,250
1998-03-13$11.50$11.5014,900
1998-03-12$14.00$14.009,800
1998-03-11$14.25$14.255,350
1998-03-10$13.50$13.5013,650
1998-03-09$12.75$12.757,250
1998-03-06$13.00$13.0013,925
1998-03-05$13.50$13.509,650
1998-03-04$13.25$13.253,250
1998-03-03$14.50$14.503,800
1998-03-02$15.00$15.009,800
1998-02-27$13.00$13.0016,000
1998-02-26$13.25$13.256,025
1998-02-25$12.63$12.635,725
1998-02-24$12.25$12.2518,725
1998-02-23$11.88$11.884,875
1998-02-20$11.50$11.507,925
1998-02-19$12.00$12.003,050
1998-02-18$11.50$11.504,325
1998-02-17$12.00$12.0021,850
1998-02-13$12.00$12.0011,625
1998-02-12$11.75$11.755,075
1998-02-11$11.00$11.004,675
1998-02-10$11.00$11.001,925
1998-02-09$10.00$10.006,975
1998-02-06$10.00$10.004,600
1998-02-05$10.00$10.002,675
1998-02-04$10.50$10.501,700
1998-02-03$10.25$10.252,525
1998-02-02$10.00$10.005,700
1998-01-30$10.00$10.007,250
1998-01-29$10.25$10.2510,550
1998-01-28$11.00$11.005,425
1998-01-27$10.25$10.257,675
1998-01-26$10.25$10.2514,550
1998-01-23$11.00$11.0011,525
1998-01-22$11.50$11.509,050
1998-01-21$11.13$11.131,575
1998-01-20$11.75$11.758,200
1998-01-16$12.00$12.007,275
1998-01-15$11.25$11.2511,675
1998-01-14$12.00$12.005,950
1998-01-13$12.25$12.253,950
1998-01-12$12.25$12.259,300
1998-01-09$11.75$11.753,050
1998-01-08$11.50$11.5017,650
1998-01-07$12.25$12.2510,275
1998-01-06$11.75$11.755,675
1998-01-05$11.25$11.259,350
1998-01-02$11.00$11.003,275