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 — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2008-12-31$1.46$1.467,800
2008-12-30$1.45$1.453,200
2008-12-29$1.45$1.452,600
2008-12-26$1.36$1.368,000
2008-12-24$1.36$1.36200
2008-12-23$1.35$1.352,200
2008-12-22$1.38$1.38500
2008-12-19$1.35$1.35800
2008-12-18$1.55$1.558,600
2008-12-17$1.60$1.608,000
2008-12-16$1.55$1.551,300
2008-12-15$1.58$1.58100
2008-12-12$1.53$1.53400
2008-12-11$1.48$1.488,300
2008-12-10$1.50$1.506,700
2008-12-09$1.58$1.58200
2008-12-08$1.58$1.586,200
2008-12-05$1.50$1.502,600
2008-12-04$1.52$1.52600
2008-12-03$1.48$1.48500
2008-12-02$1.46$1.46500
2008-12-01$1.44$1.449,100
2008-11-28$1.39$1.390
2008-11-26$1.39$1.395,800
2008-11-25$1.45$1.45600
2008-11-24$1.45$1.45100
2008-11-21$1.43$1.433,200
2008-11-20$1.45$1.451,600
2008-11-19$1.50$1.504,000
2008-11-18$1.57$1.571,900
2008-11-17$1.58$1.582,600
2008-11-14$1.51$1.514,900
2008-11-13$1.61$1.615,500
2008-11-12$1.47$1.471,400
2008-11-11$1.52$1.521,400
2008-11-10$1.62$1.623,400
2008-11-07$1.63$1.631,900
2008-11-06$1.67$1.67500
2008-11-05$1.68$1.68300
2008-11-04$1.68$1.683,200
2008-11-03$1.65$1.65800
2008-10-31$1.59$1.5922,100
2008-10-30$1.65$1.65500
2008-10-29$1.57$1.57900
2008-10-28$1.60$1.601,800
2008-10-27$1.51$1.512,300
2008-10-24$1.45$1.455,200
2008-10-23$1.44$1.442,600
2008-10-22$1.68$1.68400
2008-10-21$1.67$1.671,500
2008-10-20$1.66$1.661,500
2008-10-17$1.68$1.68700
2008-10-16$1.69$1.695,800
2008-10-15$1.61$1.61700
2008-10-14$1.70$1.703,700
2008-10-13$1.69$1.692,800
2008-10-10$1.65$1.654,700
2008-10-09$1.70$1.70900
2008-10-08$1.85$1.853,900
2008-10-07$1.75$1.756,600
2008-10-06$1.85$1.853,100
2008-10-03$2.05$2.056,100
2008-10-02$1.92$1.921,100
2008-10-01$2.05$2.05200
2008-09-30$1.90$1.906,700
2008-09-29$2.05$2.05100
2008-09-26$1.98$1.981,500
2008-09-25$2.05$2.055,500
2008-09-24$2.00$2.00200
2008-09-23$2.02$2.02600
2008-09-22$2.00$2.002,700
2008-09-19$1.94$1.941,200
2008-09-18$1.88$1.882,000
2008-09-17$1.83$1.835,900
2008-09-16$1.90$1.9013,700
2008-09-15$1.85$1.8511,300
2008-09-12$2.01$2.013,700
2008-09-11$2.06$2.063,000
2008-09-10$2.12$2.129,000
2008-09-09$2.12$2.122,600
2008-09-08$2.07$2.076,100
2008-09-05$2.11$2.11600
2008-09-04$2.12$2.125,800
2008-09-03$2.10$2.109,200
2008-09-02$2.07$2.074,400
2008-08-29$2.04$2.043,000
2008-08-28$2.00$2.003,300
2008-08-27$1.99$1.992,900
2008-08-26$1.93$1.933,500
2008-08-25$2.00$2.004,500
2008-08-22$2.00$2.005,000
2008-08-21$2.00$2.005,100
2008-08-20$2.00$2.006,600
2008-08-19$2.00$2.0014,300
2008-08-18$1.93$1.934,300
2008-08-15$1.98$1.9854,200
2008-08-14$1.70$1.701,200
2008-08-13$1.76$1.76600
2008-08-12$1.70$1.707,300
2008-08-11$1.58$1.582,200
2008-08-08$1.60$1.601,100
2008-08-07$1.55$1.553,200
2008-08-06$1.55$1.551,200
2008-08-05$1.55$1.5526,000
2008-08-04$1.71$1.717,300
2008-08-01$1.64$1.640
2008-07-31$1.64$1.646,500
2008-07-30$1.68$1.681,300
2008-07-29$1.62$1.62400
2008-07-28$1.68$1.680
2008-07-25$1.68$1.687,700
2008-07-24$1.70$1.701,400
2008-07-23$1.94$1.9410,900
2008-07-22$1.63$1.635,100
2008-07-21$1.80$1.807,800
2008-07-18$1.78$1.7826,900
2008-07-17$1.71$1.71200
2008-07-16$1.72$1.724,900
2008-07-15$1.50$1.505,800
2008-07-14$1.56$1.5617,400
2008-07-11$1.57$1.571,200
2008-07-10$1.65$1.650
2008-07-09$1.65$1.651,200
2008-07-08$1.65$1.654,700
2008-07-07$1.64$1.644,100
2008-07-03$1.75$1.756,700
2008-07-02$1.85$1.851,300
2008-07-01$1.83$1.832,200
2008-06-30$1.70$1.7010,500
2008-06-27$1.54$1.547,700
2008-06-26$1.60$1.601,200
2008-06-25$1.69$1.69900
2008-06-24$1.83$1.83300
2008-06-23$1.82$1.82600
2008-06-20$1.74$1.7413,700
2008-06-19$1.85$1.858,200
2008-06-18$1.86$1.866,700
2008-06-17$1.95$1.959,700
2008-06-16$1.95$1.9516,900
2008-06-13$1.95$1.9518,900
2008-06-12$2.00$2.005,000
2008-06-11$1.91$1.917,800
2008-06-10$1.90$1.9031,200
2008-06-09$1.99$1.9922,400
2008-06-06$1.92$1.9298,500
2008-06-05$1.82$1.822,900
2008-06-04$1.84$1.8410,500
2008-06-03$1.80$1.8015,400
2008-06-02$1.74$1.743,500
2008-05-30$1.72$1.72104,300
2008-05-29$1.66$1.66246,000
2008-05-28$1.56$1.561,700
2008-05-27$1.55$1.5517,500
2008-05-23$1.64$1.6413,700
2008-05-22$1.46$1.4612,100
2008-05-21$1.61$1.617,300
2008-05-20$1.56$1.561,300
2008-05-19$1.50$1.5017,700
2008-05-16$1.41$1.418,300
2008-05-15$1.54$1.5411,700
2008-05-14$1.60$1.607,800
2008-05-13$1.70$1.702,300
2008-05-12$1.68$1.681,200
2008-05-09$1.60$1.6027,900
2008-05-08$1.72$1.727,600
2008-05-07$1.67$1.674,400
2008-05-06$1.67$1.6718,200
2008-05-05$1.60$1.6023,800
2008-05-02$1.67$1.6722,700
2008-05-01$1.67$1.67800
2008-04-30$1.61$1.6131,900
2008-04-29$1.48$1.487,100
2008-04-28$1.45$1.4569,800
2008-04-25$1.61$1.6110,000
2008-04-24$1.70$1.700
2008-04-23$1.70$1.7018,300
2008-04-22$1.61$1.616,400
2008-04-21$1.70$1.709,100
2008-04-18$1.75$1.7525,200
2008-04-17$1.74$1.7430,400
2008-04-16$1.73$1.7310,300
2008-04-15$1.67$1.673,900
2008-04-14$1.67$1.6713,800
2008-04-11$1.76$1.7617,300
2008-04-10$1.60$1.6038,900
2008-04-09$1.77$1.7719,000
2008-04-08$1.69$1.6911,000
2008-04-07$1.71$1.7117,600
2008-04-04$1.60$1.6049,300
2008-04-03$1.45$1.452,500
2008-04-02$1.50$1.5021,400
2008-04-01$1.56$1.5611,500
2008-03-31$1.57$1.5722,000
2008-03-28$1.51$1.512,800
2008-03-27$1.52$1.520
2008-03-26$1.52$1.5236,300
2008-03-25$1.46$1.463,400
2008-03-24$1.46$1.4630,900
2008-03-20$1.50$1.5028,500
2008-03-19$1.45$1.4521,300
2008-03-18$1.47$1.476,200
2008-03-17$1.40$1.4010,800
2008-03-14$1.43$1.436,100
2008-03-13$1.44$1.44500
2008-03-12$1.44$1.4421,400
2008-03-11$1.41$1.415,600
2008-03-10$1.59$1.591,500
2008-03-07$1.54$1.541,200
2008-03-06$1.44$1.447,700
2008-03-05$1.49$1.494,300
2008-03-04$1.58$1.585,500
2008-03-03$1.45$1.4529,900
2008-02-29$1.45$1.451,900
2008-02-28$1.50$1.5025,700
2008-02-27$1.52$1.5222,400
2008-02-26$1.68$1.689,500
2008-02-25$1.47$1.4711,200
2008-02-22$1.60$1.6011,100
2008-02-21$1.34$1.3429,800
2008-02-20$1.49$1.495,500
2008-02-19$1.40$1.4017,000
2008-02-15$1.40$1.4023,100
2008-02-14$1.27$1.277,200
2008-02-13$1.40$1.400
2008-02-12$1.40$1.401,900
2008-02-11$1.32$1.321,700
2008-02-08$1.36$1.367,700
2008-02-07$1.24$1.241,000
2008-02-06$1.26$1.262,400
2008-02-05$1.28$1.281,000
2008-02-04$1.27$1.279,200
2008-02-01$1.39$1.3920,800
2008-01-31$1.24$1.240
2008-01-30$1.24$1.244,000
2008-01-29$1.24$1.241,400
2008-01-28$1.15$1.152,100
2008-01-25$1.24$1.24300
2008-01-24$1.23$1.239,700
2008-01-23$1.28$1.289,300
2008-01-22$1.20$1.209,500
2008-01-18$1.10$1.101,800
2008-01-17$1.10$1.105,300
2008-01-16$1.15$1.156,300
2008-01-15$1.11$1.111,700
2008-01-14$1.08$1.087,500
2008-01-11$1.05$1.0511,900
2008-01-10$1.06$1.0615,700
2008-01-09$1.19$1.191,000
2008-01-08$1.16$1.161,400
2008-01-07$1.39$1.391,000
2008-01-04$1.26$1.2616,500
2008-01-03$1.28$1.28500
2008-01-02$1.23$1.233,600