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 — 2006

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2006-12-29$1.88$1.8844,500
2006-12-28$1.79$1.7925,600
2006-12-27$1.81$1.8118,100
2006-12-26$1.74$1.7417,000
2006-12-22$1.87$1.8725,000
2006-12-21$1.80$1.805,400
2006-12-20$1.75$1.758,700
2006-12-19$1.73$1.7318,500
2006-12-18$1.76$1.7611,300
2006-12-15$1.80$1.804,700
2006-12-14$1.86$1.8623,900
2006-12-13$1.79$1.793,500
2006-12-12$1.82$1.823,800
2006-12-11$1.85$1.8543,000
2006-12-08$1.74$1.7460,600
2006-12-07$1.89$1.8911,000
2006-12-06$1.91$1.9113,400
2006-12-05$1.74$1.7413,200
2006-12-04$1.81$1.812,000
2006-12-01$1.86$1.863,000
2006-11-30$1.85$1.857,300
2006-11-29$1.80$1.809,700
2006-11-28$1.85$1.8521,900
2006-11-27$1.81$1.812,000
2006-11-24$1.82$1.822,300
2006-11-22$1.85$1.85500
2006-11-21$1.90$1.9022,600
2006-11-20$1.80$1.803,400
2006-11-17$1.87$1.8736,700
2006-11-16$1.78$1.7847,400
2006-11-15$1.62$1.6219,900
2006-11-14$1.73$1.738,100
2006-11-13$1.72$1.7219,400
2006-11-10$1.81$1.815,300
2006-11-09$1.86$1.8620,900
2006-11-08$1.89$1.895,900
2006-11-07$1.84$1.8410,300
2006-11-06$1.80$1.805,600
2006-11-03$1.72$1.721,600
2006-11-02$1.80$1.8010,100
2006-11-01$1.64$1.648,025
2006-10-31$1.64$1.6429,500
2006-10-30$1.64$1.648,075
2006-10-27$1.76$1.766,250
2006-10-26$1.80$1.809,950
2006-10-25$1.76$1.763,875
2006-10-24$1.76$1.7619,325
2006-10-23$1.72$1.7216,350
2006-10-20$1.72$1.7228,050
2006-10-19$1.96$1.9611,600
2006-10-18$1.88$1.883,925
2006-10-17$1.96$1.9620,575
2006-10-16$2.00$2.006,175
2006-10-13$1.92$1.925,100
2006-10-12$1.92$1.926,950
2006-10-11$1.72$1.724,525
2006-10-10$1.72$1.7211,250
2006-10-09$1.76$1.760
2006-10-06$1.76$1.764,575
2006-10-05$1.72$1.724,325
2006-10-04$1.72$1.729,750
2006-10-03$1.72$1.722,050
2006-10-02$1.72$1.725,200
2006-09-29$1.76$1.7610,775
2006-09-28$1.76$1.763,950
2006-09-27$1.76$1.765,250
2006-09-26$1.68$1.684,375
2006-09-25$1.80$1.803,050
2006-09-22$1.80$1.8016,425
2006-09-21$1.72$1.7215,750
2006-09-20$1.88$1.888,275
2006-09-19$1.84$1.8410,800
2006-09-18$1.84$1.847,350
2006-09-15$1.84$1.841,975
2006-09-14$1.84$1.846,625
2006-09-13$1.96$1.963,775
2006-09-12$2.00$2.003,450
2006-09-11$1.92$1.92925
2006-09-08$2.00$2.005,775
2006-09-07$1.96$1.961,225
2006-09-06$2.00$2.003,000
2006-09-05$2.04$2.048,925
2006-09-01$1.76$1.7614,575
2006-08-31$1.96$1.9618,875
2006-08-30$1.92$1.923,800
2006-08-29$1.76$1.7615,500
2006-08-28$1.80$1.8015,175
2006-08-25$1.96$1.9629,500
2006-08-24$1.96$1.9622,175
2006-08-23$2.08$2.0815,550
2006-08-22$2.20$2.2010,100
2006-08-21$2.40$2.404,675
2006-08-18$2.68$2.685,400
2006-08-17$3.12$3.12113,850
2006-08-16$2.28$2.283,625
2006-08-15$2.08$2.0811,400
2006-08-14$2.16$2.168,750
2006-08-11$2.28$2.2810,525
2006-08-10$2.40$2.403,925
2006-08-09$2.48$2.481,350
2006-08-08$2.48$2.4825
2006-08-07$2.44$2.441,250
2006-08-04$2.44$2.44875
2006-08-03$2.44$2.441,525
2006-08-02$2.44$2.445,125
2006-08-01$2.48$2.481,575
2006-07-31$2.48$2.481,875
2006-07-28$2.52$2.528,500
2006-07-27$2.56$2.561,525
2006-07-26$2.60$2.603,150
2006-07-25$2.64$2.644,375
2006-07-24$2.72$2.721,925
2006-07-21$2.72$2.72800
2006-07-20$2.72$2.72850
2006-07-19$2.80$2.805,100
2006-07-18$2.80$2.803,875
2006-07-17$2.72$2.72775
2006-07-14$2.68$2.681,575
2006-07-13$2.80$2.801,850
2006-07-12$2.80$2.801,300
2006-07-11$2.92$2.9219,750
2006-07-10$2.92$2.922,925
2006-07-07$2.72$2.72150
2006-07-06$2.76$2.761,425
2006-07-05$2.72$2.723,425
2006-07-03$2.68$2.68425
2006-06-30$2.80$2.80700
2006-06-29$2.80$2.807,200
2006-06-28$2.80$2.806,600
2006-06-27$2.68$2.683,000
2006-06-26$2.68$2.681,550
2006-06-23$2.76$2.7611,450
2006-06-22$2.72$2.727,275
2006-06-21$2.80$2.801,625
2006-06-20$2.80$2.806,750
2006-06-19$2.72$2.721,625
2006-06-16$2.68$2.687,200
2006-06-15$2.68$2.683,800
2006-06-14$2.60$2.60750
2006-06-13$2.64$2.646,050
2006-06-12$2.80$2.801,775
2006-06-09$2.80$2.804,150
2006-06-08$2.88$2.881,575
2006-06-07$2.80$2.8017,300
2006-06-06$2.76$2.763,375
2006-06-05$2.72$2.724,325
2006-06-02$2.80$2.806,675
2006-06-01$2.64$2.641,825
2006-05-31$2.68$2.685,675
2006-05-30$2.76$2.762,000
2006-05-26$2.80$2.8021,050
2006-05-25$2.76$2.7635,475
2006-05-24$2.48$2.4814,225
2006-05-23$2.36$2.364,225
2006-05-22$2.36$2.369,400
2006-05-19$2.28$2.2811,700
2006-05-18$2.40$2.407,875
2006-05-17$2.44$2.44675
2006-05-16$2.52$2.5214,775
2006-05-15$2.36$2.3617,450
2006-05-12$2.36$2.3622,600
2006-05-11$2.60$2.608,350
2006-05-10$2.64$2.647,900
2006-05-09$2.64$2.644,300
2006-05-08$2.76$2.766,275
2006-05-05$2.72$2.727,675
2006-05-04$2.68$2.683,475
2006-05-03$2.68$2.6816,600
2006-05-02$2.88$2.888,550
2006-05-01$2.72$2.724,625
2006-04-28$2.72$2.725,675
2006-04-27$2.72$2.727,450
2006-04-26$2.88$2.886,650
2006-04-25$3.00$3.003,425
2006-04-24$2.92$2.925,975
2006-04-21$3.00$3.0012,700
2006-04-20$2.92$2.9224,825
2006-04-19$3.08$3.0816,450
2006-04-18$2.92$2.9290,200
2006-04-17$3.40$3.40217,925
2006-04-13$2.88$2.8833,775
2006-04-12$2.52$2.522,600
2006-04-11$2.56$2.565,600
2006-04-10$2.64$2.641,950
2006-04-07$2.64$2.6412,650
2006-04-06$2.68$2.685,850
2006-04-05$2.64$2.647,250
2006-04-04$2.80$2.804,175
2006-04-03$2.80$2.807,600
2006-03-31$2.88$2.889,750
2006-03-30$2.60$2.606,075
2006-03-29$2.68$2.684,775
2006-03-28$2.76$2.766,700
2006-03-27$2.76$2.767,175
2006-03-24$2.76$2.7612,550
2006-03-23$2.72$2.7216,300
2006-03-22$2.72$2.7220,950
2006-03-21$2.60$2.6057,250
2006-03-20$2.84$2.8488,800
2006-03-17$2.52$2.52103,875
2006-03-16$2.48$2.484,550
2006-03-15$2.40$2.403,050
2006-03-14$2.48$2.483,200
2006-03-13$2.40$2.405,000
2006-03-10$2.44$2.448,925
2006-03-09$2.44$2.447,550
2006-03-08$2.40$2.4026,675
2006-03-07$2.52$2.5263,525
2006-03-06$2.36$2.3620,300
2006-03-03$2.56$2.5621,725
2006-03-02$2.52$2.5228,900
2006-03-01$2.28$2.283,500
2006-02-28$2.36$2.364,450
2006-02-27$2.36$2.368,075
2006-02-24$2.40$2.4012,275
2006-02-23$2.28$2.284,475
2006-02-22$2.28$2.287,875
2006-02-21$2.20$2.2020,650
2006-02-17$2.28$2.2812,100
2006-02-16$2.32$2.3224,425
2006-02-15$2.32$2.324,700
2006-02-14$2.32$2.3218,250
2006-02-13$2.28$2.2810,700
2006-02-10$2.44$2.445,425
2006-02-09$2.48$2.4823,650
2006-02-08$2.68$2.689,475
2006-02-07$2.72$2.722,875
2006-02-06$2.76$2.768,450
2006-02-03$2.76$2.766,200
2006-02-02$2.76$2.7620,725
2006-02-01$2.68$2.687,125
2006-01-31$2.80$2.8018,750
2006-01-30$2.80$2.806,575
2006-01-27$2.80$2.8045,950
2006-01-26$2.60$2.6012,225
2006-01-25$2.64$2.644,875
2006-01-24$2.60$2.6010,000
2006-01-23$2.56$2.5610,050
2006-01-20$2.56$2.566,800
2006-01-19$2.52$2.527,400
2006-01-18$2.64$2.6412,250
2006-01-17$2.52$2.5212,375
2006-01-13$2.52$2.5212,275
2006-01-12$2.52$2.5218,925
2006-01-11$2.52$2.5224,450
2006-01-10$2.52$2.5235,625
2006-01-09$2.76$2.7636,500
2006-01-06$2.84$2.8441,200
2006-01-05$3.00$3.007,675
2006-01-04$2.88$2.887,975
2006-01-03$2.64$2.6436,375