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 — 1992

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
1992-12-31$4.25$4.251,700
1992-12-30$4.50$4.504,450
1992-12-29$3.75$3.751,175
1992-12-28$4.00$4.002,350
1992-12-24$3.75$3.7526,500
1992-12-23$4.75$4.75250
1992-12-22$5.00$5.004,950
1992-12-21$4.50$4.503,525
1992-12-18$4.50$4.502,075
1992-12-17$4.50$4.503,800
1992-12-16$5.00$5.003,300
1992-12-15$5.00$5.003,000
1992-12-14$5.25$5.253,750
1992-12-11$6.00$6.00675
1992-12-10$6.00$6.00175
1992-12-09$5.50$5.5025
1992-12-08$5.50$5.500
1992-12-07$5.50$5.50175
1992-12-04$6.00$6.003,175
1992-12-03$4.75$4.754,950
1992-12-02$6.00$6.001,500
1992-12-01$6.00$6.0015,600
1992-11-30$8.00$8.00475
1992-11-27$8.25$8.250
1992-11-25$8.25$8.251,350
1992-11-24$8.00$8.00825
1992-11-23$7.50$7.505,100
1992-11-20$8.00$8.00175
1992-11-19$8.00$8.00800
1992-11-18$8.00$8.00175
1992-11-17$7.75$7.75500
1992-11-16$7.50$7.502,775
1992-11-13$7.50$7.501,125
1992-11-12$8.00$8.001,475
1992-11-11$7.25$7.252,600
1992-11-10$8.00$8.00450
1992-11-09$7.50$7.50225
1992-11-06$7.75$7.751,525
1992-11-05$7.50$7.501,025
1992-11-04$7.50$7.501,100
1992-11-03$8.00$8.00800
1992-11-02$7.50$7.50175
1992-10-30$7.88$7.882,000
1992-10-29$7.75$7.751,525
1992-10-28$8.25$8.25300
1992-10-27$7.75$7.751,275
1992-10-26$8.00$8.002,450
1992-10-23$7.50$7.503,800
1992-10-22$7.75$7.751,050
1992-10-21$8.00$8.001,425
1992-10-20$7.75$7.752,875
1992-10-19$8.50$8.5018,775
1992-10-16$7.25$7.25450
1992-10-15$6.50$6.508,700
1992-10-14$6.50$6.509,775
1992-10-13$6.00$6.00300
1992-10-12$5.75$5.755,750
1992-10-09$6.00$6.002,250
1992-10-08$5.75$5.750
1992-10-07$5.75$5.750
1992-10-06$5.75$5.750
1992-10-05$5.75$5.751,775
1992-10-02$5.63$5.63350
1992-10-01$6.00$6.00500
1992-09-30$5.50$5.503,175
1992-09-29$5.75$5.75250
1992-09-28$5.75$5.75725
1992-09-25$5.75$5.750
1992-09-24$5.75$5.751,650
1992-09-23$6.25$6.250
1992-09-22$6.25$6.250
1992-09-21$6.25$6.2550
1992-09-18$6.25$6.25675
1992-09-17$6.25$6.258,925
1992-09-16$5.75$5.750
1992-09-15$5.75$5.75550
1992-09-14$5.50$5.50275
1992-09-11$5.50$5.5075
1992-09-10$6.00$6.00375
1992-09-09$6.00$6.001,425
1992-09-08$5.75$5.75475
1992-09-04$6.00$6.001,450
1992-09-03$5.75$5.75500
1992-09-02$5.75$5.758,425
1992-09-01$6.00$6.0011,750
1992-08-31$5.25$5.255,750
1992-08-28$5.00$5.00250
1992-08-27$4.50$4.501,500
1992-08-26$4.75$4.75275
1992-08-25$5.00$5.00850
1992-08-24$4.50$4.502,650
1992-08-21$5.75$5.7510,125
1992-08-20$5.00$5.0035,225
1992-08-19$4.25$4.2525
1992-08-18$4.50$4.504,100
1992-08-17$4.00$4.008,050
1992-08-14$4.50$4.501,000
1992-08-13$4.50$4.502,025
1992-08-12$4.00$4.00800
1992-08-11$4.25$4.25250
1992-08-10$3.75$3.751,800
1992-08-07$4.00$4.001,425
1992-08-06$3.50$3.50425
1992-08-05$4.00$4.00250
1992-08-04$3.50$3.50250
1992-08-03$4.00$4.00625
1992-07-31$3.75$3.752,225
1992-07-30$3.75$3.751,550
1992-07-29$4.00$4.001,525
1992-07-28$3.75$3.75650
1992-07-27$3.75$3.75250
1992-07-24$4.00$4.001,125
1992-07-23$4.00$4.00900
1992-07-22$3.75$3.75500
1992-07-21$4.00$4.005,475
1992-07-20$3.75$3.7525
1992-07-17$4.00$4.003,475
1992-07-16$4.00$4.0010,150
1992-07-15$3.75$3.756,925
1992-07-14$2.75$2.75475
1992-07-13$2.50$2.50150
1992-07-10$2.50$2.502,525
1992-07-09$2.75$2.750
1992-07-08$2.75$2.754,125
1992-07-07$2.63$2.632,500
1992-07-06$2.50$2.501,250
1992-07-02$2.50$2.50600
1992-07-01$2.50$2.501,250
1992-06-30$2.88$2.882,500
1992-06-29$2.50$2.50900
1992-06-26$2.50$2.500
1992-06-25$2.50$2.500
1992-06-24$2.50$2.5050
1992-06-23$3.00$3.001,100
1992-06-22$2.75$2.751,250
1992-06-19$2.50$2.500
1992-06-18$2.50$2.502,200
1992-06-17$2.88$2.883,000
1992-06-16$2.50$2.500
1992-06-15$2.50$2.503,750
1992-06-12$2.25$2.250
1992-06-11$2.25$2.250
1992-06-10$2.25$2.25125
1992-06-09$2.25$2.2550
1992-06-08$2.25$2.25450
1992-06-05$2.25$2.25750
1992-06-04$2.25$2.2525
1992-06-03$2.25$2.250
1992-06-02$2.25$2.2550
1992-06-01$2.25$2.250
1992-05-29$2.25$2.2525
1992-05-28$2.25$2.255,025
1992-05-27$2.25$2.251,875
1992-05-26$2.25$2.254,925
1992-05-22$2.25$2.250
1992-05-21$2.25$2.252,500
1992-05-20$2.00$2.001,375
1992-05-19$2.00$2.001,825
1992-05-18$2.00$2.00525
1992-05-15$2.00$2.007,375
1992-05-14$2.00$2.00250
1992-05-13$2.00$2.004,650
1992-05-12$2.25$2.25600
1992-05-11$2.25$2.251,225
1992-05-08$2.25$2.250
1992-05-07$2.25$2.25500
1992-05-06$2.25$2.252,625
1992-05-05$2.50$2.501,750
1992-05-04$2.25$2.25400
1992-05-01$2.25$2.251,075
1992-04-30$2.25$2.2550
1992-04-29$2.25$2.25650
1992-04-28$2.25$2.250
1992-04-27$2.25$2.25250
1992-04-24$2.25$2.250
1992-04-23$2.25$2.250
1992-04-22$2.25$2.250
1992-04-21$2.25$2.2525
1992-04-20$2.25$2.252,675
1992-04-16$2.50$2.504,225
1992-04-15$2.75$2.7575
1992-04-14$2.75$2.753,900
1992-04-13$3.00$3.00500
1992-04-10$3.00$3.000
1992-04-09$3.00$3.00775
1992-04-08$3.50$3.502,825
1992-04-07$3.75$3.75275
1992-04-06$3.75$3.750
1992-04-03$3.75$3.750
1992-04-02$3.75$3.75375
1992-04-01$3.50$3.50500
1992-03-31$3.50$3.50600
1992-03-30$3.50$3.501,750
1992-03-27$3.50$3.502,675
1992-03-26$3.50$3.500
1992-03-25$3.50$3.50125
1992-03-24$3.50$3.50750
1992-03-23$3.75$3.753,750
1992-03-20$4.25$4.250
1992-03-19$4.25$4.25975
1992-03-18$4.25$4.251,775
1992-03-17$4.25$4.25875
1992-03-16$4.25$4.256,050
1992-03-13$3.75$3.759,500
1992-03-12$3.00$3.00300
1992-03-11$3.00$3.000
1992-03-10$3.00$3.00500
1992-03-09$2.75$2.75525
1992-03-06$2.75$2.750
1992-03-05$2.75$2.750
1992-03-04$2.75$2.750
1992-03-03$2.75$2.754,000
1992-03-02$2.50$2.50350
1992-02-28$2.50$2.50500
1992-02-27$2.50$2.50100
1992-02-26$2.25$2.2525
1992-02-25$2.25$2.251,550
1992-02-24$2.25$2.250
1992-02-21$2.25$2.2550
1992-02-20$2.00$2.001,900
1992-02-19$2.00$2.00300
1992-02-18$2.00$2.000
1992-02-14$2.00$2.001,025
1992-02-13$2.00$2.000
1992-02-12$2.00$2.000
1992-02-11$2.00$2.00450
1992-02-10$2.00$2.002,250
1992-02-07$2.00$2.003,525
1992-02-06$2.75$2.753,350
1992-02-05$2.75$2.752,550
1992-02-04$2.75$2.75125
1992-02-03$2.75$2.75150
1992-01-31$2.75$2.750
1992-01-30$2.75$2.750
1992-01-29$2.75$2.750
1992-01-28$2.75$2.750
1992-01-27$2.75$2.753,675
1992-01-24$2.63$2.63750
1992-01-23$2.75$2.751,250
1992-01-22$2.75$2.755,850
1992-01-21$2.38$2.384,575
1992-01-20$2.13$2.1310,275
1992-01-17$1.75$1.7510,275
1992-01-16$1.25$1.25300
1992-01-15$1.25$1.25250
1992-01-14$1.25$1.25300
1992-01-13$1.25$1.25775
1992-01-10$1.38$1.380
1992-01-09$1.38$1.38600
1992-01-08$1.38$1.384,950
1992-01-07$1.38$1.380
1992-01-06$1.38$1.382,500
1992-01-03$1.38$1.380
1992-01-02$1.38$1.385,000