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 — 1993

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
1993-12-31$5.50$5.50725
1993-12-30$5.25$5.250
1993-12-29$5.25$5.25275
1993-12-28$5.75$5.75550
1993-12-27$5.75$5.75500
1993-12-23$5.00$5.00375
1993-12-22$5.00$5.00650
1993-12-21$4.75$4.75100
1993-12-20$5.00$5.003,175
1993-12-17$5.38$5.382,150
1993-12-16$5.50$5.502,000
1993-12-15$5.00$5.00600
1993-12-14$5.50$5.501,150
1993-12-13$5.25$5.25350
1993-12-10$5.75$5.75900
1993-12-09$5.00$5.005,650
1993-12-08$5.50$5.500
1993-12-07$5.50$5.5050
1993-12-06$6.25$6.254,175
1993-12-03$5.75$5.755,025
1993-12-02$6.50$6.501,725
1993-12-01$6.00$6.001,225
1993-11-30$5.75$5.753,100
1993-11-29$5.50$5.505,150
1993-11-26$6.00$6.001,550
1993-11-24$5.50$5.502,050
1993-11-23$6.25$6.25250
1993-11-22$6.50$6.503,400
1993-11-19$6.50$6.501,050
1993-11-18$6.00$6.00900
1993-11-17$6.50$6.506,000
1993-11-16$5.50$5.5025
1993-11-15$6.25$6.252,900
1993-11-12$5.50$5.502,550
1993-11-11$5.25$5.25500
1993-11-10$5.50$5.50875
1993-11-09$6.00$6.00800
1993-11-08$6.00$6.007,900
1993-11-05$5.75$5.75750
1993-11-04$6.00$6.000
1993-11-03$6.00$6.003,400
1993-11-02$6.25$6.255,125
1993-11-01$6.00$6.003,050
1993-10-29$6.25$6.250
1993-10-28$6.25$6.25175
1993-10-27$6.00$6.009,700
1993-10-26$6.50$6.5010,450
1993-10-25$6.50$6.501,750
1993-10-22$6.50$6.502,775
1993-10-21$5.75$5.754,250
1993-10-20$6.50$6.50850
1993-10-19$6.50$6.5019,225
1993-10-18$5.50$5.50675
1993-10-15$4.75$4.75400
1993-10-14$5.50$5.5075
1993-10-13$5.00$5.00750
1993-10-12$4.75$4.7525
1993-10-11$5.00$5.001,225
1993-10-08$5.50$5.501,300
1993-10-07$5.50$5.501,100
1993-10-06$4.50$4.501,275
1993-10-05$5.00$5.002,250
1993-10-04$4.00$4.00775
1993-10-01$5.00$5.001,300
1993-09-30$4.50$4.505,950
1993-09-29$5.25$5.252,500
1993-09-28$5.25$5.254,550
1993-09-27$5.75$5.751,325
1993-09-24$6.00$6.00375
1993-09-23$5.25$5.251,700
1993-09-22$5.25$5.250
1993-09-21$5.25$5.25600
1993-09-20$5.00$5.001,675
1993-09-17$5.00$5.00975
1993-09-16$5.75$5.75600
1993-09-15$5.50$5.50825
1993-09-14$5.50$5.501,775
1993-09-13$5.50$5.501,500
1993-09-10$5.50$5.501,175
1993-09-09$5.25$5.251,250
1993-09-08$5.50$5.502,450
1993-09-07$5.50$5.50125
1993-09-03$6.00$6.00850
1993-09-02$5.75$5.759,275
1993-09-01$5.25$5.25325
1993-08-31$5.25$5.25500
1993-08-30$5.75$5.754,200
1993-08-27$5.25$5.250
1993-08-26$5.25$5.251,675
1993-08-25$5.00$5.00275
1993-08-24$5.00$5.000
1993-08-23$5.00$5.002,225
1993-08-20$4.75$4.7525
1993-08-19$5.25$5.252,750
1993-08-18$5.50$5.50750
1993-08-17$5.25$5.25775
1993-08-16$5.25$5.25250
1993-08-13$5.75$5.75500
1993-08-12$5.75$5.753,650
1993-08-11$5.50$5.502,050
1993-08-10$4.75$4.7550
1993-08-09$4.75$4.752,975
1993-08-06$4.75$4.750
1993-08-05$4.75$4.75450
1993-08-04$5.00$5.000
1993-08-03$5.00$5.000
1993-08-02$5.00$5.000
1993-07-30$5.00$5.001,275
1993-07-29$5.50$5.50500
1993-07-28$5.00$5.00100
1993-07-27$5.25$5.25550
1993-07-26$5.00$5.00425
1993-07-23$5.00$5.00400
1993-07-22$5.00$5.00800
1993-07-21$5.50$5.50100
1993-07-20$5.50$5.5050
1993-07-19$5.50$5.50175
1993-07-16$5.50$5.500
1993-07-15$5.50$5.502,825
1993-07-14$5.25$5.255,625
1993-07-13$5.50$5.507,025
1993-07-12$5.50$5.50275
1993-07-09$5.00$5.00425
1993-07-08$5.50$5.501,575
1993-07-07$5.50$5.508,950
1993-07-06$5.50$5.50250
1993-07-02$6.00$6.0050
1993-07-01$6.00$6.001,300
1993-06-30$5.50$5.509,275
1993-06-29$6.00$6.00175
1993-06-28$5.50$5.501,300
1993-06-25$6.00$6.00300
1993-06-24$5.50$5.507,625
1993-06-23$6.75$6.75475
1993-06-22$6.25$6.252,350
1993-06-21$7.00$7.00925
1993-06-18$7.00$7.001,775
1993-06-17$7.00$7.0011,425
1993-06-16$5.50$5.504,425
1993-06-15$5.50$5.505,050
1993-06-14$6.00$6.00250
1993-06-11$6.25$6.253,725
1993-06-10$5.75$5.75475
1993-06-09$6.50$6.501,475
1993-06-08$6.50$6.501,400
1993-06-07$6.50$6.50250
1993-06-04$6.00$6.008,100
1993-06-03$6.50$6.503,450
1993-06-02$5.75$5.750
1993-06-01$5.75$5.752,050
1993-05-28$5.75$5.755,900
1993-05-27$5.50$5.502,125
1993-05-26$4.75$4.759,725
1993-05-25$6.63$6.637,700
1993-05-24$7.25$7.2575
1993-05-21$7.25$7.250
1993-05-20$7.25$7.25175
1993-05-19$7.25$7.251,875
1993-05-18$7.50$7.502,525
1993-05-17$7.25$7.25600
1993-05-14$8.00$8.001,850
1993-05-13$7.50$7.501,700
1993-05-12$7.75$7.756,325
1993-05-11$7.25$7.25525
1993-05-10$7.25$7.252,125
1993-05-07$7.25$7.253,200
1993-05-06$7.50$7.50575
1993-05-05$7.63$7.634,450
1993-05-04$7.75$7.751,500
1993-05-03$7.75$7.751,150
1993-04-30$7.00$7.005,650
1993-04-29$6.50$6.503,850
1993-04-28$7.00$7.001,100
1993-04-27$6.75$6.75275
1993-04-26$7.25$7.2510,500
1993-04-23$7.00$7.006,575
1993-04-22$6.75$6.752,050
1993-04-21$6.50$6.50850
1993-04-20$6.50$6.50875
1993-04-19$6.75$6.759,825
1993-04-16$6.00$6.0027,950
1993-04-15$5.75$5.750
1993-04-14$5.75$5.752,600
1993-04-13$5.75$5.75200
1993-04-12$5.75$5.75100
1993-04-08$6.00$6.000
1993-04-07$6.00$6.00975
1993-04-06$6.25$6.25200
1993-04-05$6.50$6.50150
1993-04-02$5.50$5.50625
1993-04-01$6.25$6.252,875
1993-03-31$6.00$6.001,250
1993-03-30$6.50$6.50725
1993-03-29$6.50$6.50250
1993-03-26$6.75$6.750
1993-03-25$6.75$6.75500
1993-03-24$6.75$6.751,375
1993-03-23$6.50$6.500
1993-03-22$6.50$6.500
1993-03-19$6.50$6.50150
1993-03-18$6.75$6.750
1993-03-17$6.75$6.75250
1993-03-16$6.75$6.752,850
1993-03-15$6.75$6.75975
1993-03-12$7.25$7.255,775
1993-03-11$7.25$7.25250
1993-03-10$6.75$6.751,975
1993-03-09$7.00$7.0025
1993-03-08$6.50$6.50350
1993-03-05$6.25$6.25250
1993-03-04$6.50$6.505,150
1993-03-03$6.75$6.754,300
1993-03-02$6.75$6.751,975
1993-03-01$7.00$7.002,000
1993-02-26$6.25$6.252,700
1993-02-25$6.50$6.5075
1993-02-24$6.50$6.503,775
1993-02-23$6.25$6.25750
1993-02-22$6.75$6.75250
1993-02-19$6.25$6.25325
1993-02-18$6.75$6.75250
1993-02-17$6.75$6.753,225
1993-02-16$6.75$6.75750
1993-02-12$6.75$6.75850
1993-02-11$6.25$6.253,100
1993-02-10$6.50$6.504,450
1993-02-09$6.50$6.501,250
1993-02-08$6.75$6.7514,700
1993-02-05$5.25$5.255,600
1993-02-04$5.75$5.75500
1993-02-03$5.50$5.501,925
1993-02-02$6.00$6.003,025
1993-02-01$6.00$6.005,700
1993-01-29$5.75$5.7523,425
1993-01-28$5.13$5.132,075
1993-01-27$4.50$4.504,525
1993-01-26$4.50$4.50250
1993-01-25$4.50$4.501,775
1993-01-22$5.00$5.001,000
1993-01-21$4.75$4.75625
1993-01-20$5.25$5.250
1993-01-19$5.25$5.25375
1993-01-18$5.25$5.251,200
1993-01-15$5.25$5.25100
1993-01-14$5.00$5.00250
1993-01-13$5.25$5.258,275
1993-01-12$5.00$5.00625
1993-01-11$5.25$5.252,350
1993-01-08$5.50$5.50575
1993-01-07$5.00$5.004,500
1993-01-06$5.00$5.002,350
1993-01-05$4.75$4.75125
1993-01-04$4.25$4.250