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 — 2010

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2010-12-31$3.38$3.383,000
2010-12-30$3.38$3.3811,200
2010-12-29$3.45$3.4527,000
2010-12-28$3.38$3.3811,300
2010-12-27$3.42$3.4212,300
2010-12-23$3.46$3.466,300
2010-12-22$3.51$3.5126,000
2010-12-21$3.33$3.3320,100
2010-12-20$3.20$3.208,100
2010-12-17$3.30$3.3015,200
2010-12-16$3.15$3.1514,300
2010-12-15$3.30$3.308,900
2010-12-14$3.31$3.3113,800
2010-12-13$3.32$3.3235,600
2010-12-10$3.20$3.2027,400
2010-12-09$3.06$3.0612,700
2010-12-08$3.05$3.0535,000
2010-12-07$3.05$3.0517,000
2010-12-06$2.87$2.8715,100
2010-12-03$3.05$3.0510,400
2010-12-02$3.20$3.2013,300
2010-12-01$3.18$3.1826,300
2010-11-30$2.91$2.9116,300
2010-11-29$2.88$2.8821,000
2010-11-26$2.90$2.9056,200
2010-11-24$3.32$3.3241,800
2010-11-23$3.78$3.7835,400
2010-11-22$3.66$3.66103,600
2010-11-19$3.38$3.3819,800
2010-11-18$3.12$3.1297,600
2010-11-17$2.77$2.7721,200
2010-11-16$2.90$2.90140,500
2010-11-15$2.55$2.557,400
2010-11-12$2.33$2.335,800
2010-11-11$2.42$2.428,400
2010-11-10$2.46$2.4611,200
2010-11-09$2.40$2.4032,700
2010-11-08$2.12$2.1217,100
2010-11-05$2.08$2.0812,600
2010-11-04$2.01$2.0110,700
2010-11-03$2.06$2.062,500
2010-11-02$2.07$2.07500
2010-11-01$2.06$2.064,800
2010-10-29$2.08$2.0812,100
2010-10-28$2.05$2.056,600
2010-10-27$2.06$2.066,600
2010-10-26$2.13$2.134,400
2010-10-25$2.21$2.214,600
2010-10-22$2.23$2.232,400
2010-10-21$2.07$2.072,400
2010-10-20$2.07$2.0713,300
2010-10-19$2.05$2.053,500
2010-10-18$2.07$2.077,200
2010-10-15$2.11$2.111,800
2010-10-14$2.11$2.1111,000
2010-10-13$2.12$2.124,300
2010-10-12$2.22$2.222,100
2010-10-11$2.19$2.1910,800
2010-10-08$2.12$2.1232,900
2010-10-07$2.23$2.235,900
2010-10-06$2.28$2.286,400
2010-10-05$2.38$2.3813,400
2010-10-04$2.43$2.432,600
2010-10-01$2.45$2.457,500
2010-09-30$2.41$2.412,000
2010-09-29$2.37$2.3710,800
2010-09-28$2.40$2.402,400
2010-09-27$2.40$2.401,800
2010-09-24$2.35$2.352,400
2010-09-23$2.36$2.3610,500
2010-09-22$2.37$2.373,800
2010-09-21$2.45$2.455,400
2010-09-20$2.36$2.364,700
2010-09-17$2.20$2.201,300
2010-09-16$2.35$2.3511,000
2010-09-15$2.53$2.531,200
2010-09-14$2.57$2.571,600
2010-09-13$2.55$2.554,800
2010-09-10$2.64$2.644,200
2010-09-09$2.60$2.603,100
2010-09-08$2.68$2.686,300
2010-09-07$2.58$2.5814,100
2010-09-03$2.66$2.6610,700
2010-09-02$2.57$2.576,000
2010-09-01$2.62$2.622,800
2010-08-31$2.68$2.683,200
2010-08-30$2.79$2.792,200
2010-08-27$2.79$2.7918,400
2010-08-26$2.58$2.583,100
2010-08-25$2.53$2.5326,300
2010-08-24$2.83$2.8354,300
2010-08-23$2.50$2.5031,300
2010-08-20$2.50$2.5035,000
2010-08-19$2.36$2.3624,400
2010-08-18$2.16$2.16500
2010-08-17$2.19$2.1931,900
2010-08-16$2.01$2.0122,600
2010-08-13$2.08$2.089,600
2010-08-12$2.15$2.1513,700
2010-08-11$2.04$2.043,200
2010-08-10$2.10$2.1011,900
2010-08-09$2.06$2.0643,400
2010-08-06$1.94$1.94800
2010-08-05$1.85$1.857,600
2010-08-04$1.81$1.81500
2010-08-03$1.89$1.899,300
2010-08-02$1.81$1.811,100
2010-07-30$1.80$1.800
2010-07-29$1.80$1.805,300
2010-07-28$1.84$1.841,200
2010-07-27$1.81$1.811,000
2010-07-26$1.83$1.833,800
2010-07-23$1.84$1.845,700
2010-07-22$1.85$1.8513,400
2010-07-21$1.75$1.7514,800
2010-07-20$1.67$1.674,000
2010-07-19$1.65$1.6516,100
2010-07-16$1.65$1.6530,000
2010-07-15$1.70$1.702,000
2010-07-14$1.73$1.7314,900
2010-07-13$1.67$1.679,700
2010-07-12$1.67$1.672,700
2010-07-09$1.70$1.701,600
2010-07-08$1.66$1.6664,400
2010-07-07$1.57$1.5712,200
2010-07-06$1.55$1.55104,300
2010-07-02$1.85$1.852,300
2010-07-01$1.80$1.808,700
2010-06-30$1.90$1.903,400
2010-06-29$1.88$1.887,300
2010-06-28$1.89$1.8911,400
2010-06-25$1.95$1.951,800
2010-06-24$2.05$2.0574,100
2010-06-23$2.10$2.101,300
2010-06-22$2.13$2.133,200
2010-06-21$2.20$2.208,800
2010-06-18$2.24$2.241,600
2010-06-17$2.28$2.281,000
2010-06-16$2.28$2.283,300
2010-06-15$2.29$2.292,100
2010-06-14$2.22$2.2216,500
2010-06-11$2.22$2.228,000
2010-06-10$2.23$2.231,400
2010-06-09$2.25$2.258,900
2010-06-08$2.25$2.25500
2010-06-07$2.25$2.2529,900
2010-06-04$2.20$2.206,000
2010-06-03$2.10$2.107,000
2010-06-02$2.01$2.012,500
2010-06-01$2.03$2.03200
2010-05-28$2.03$2.03800
2010-05-27$2.01$2.011,000
2010-05-26$2.01$2.011,600
2010-05-25$2.00$2.0013,100
2010-05-24$2.03$2.035,100
2010-05-21$2.04$2.0410,500
2010-05-20$2.02$2.0218,100
2010-05-19$2.08$2.0816,100
2010-05-18$2.18$2.1818,700
2010-05-17$2.18$2.186,800
2010-05-14$2.20$2.2013,400
2010-05-13$2.18$2.1849,700
2010-05-12$2.37$2.3717,300
2010-05-11$2.40$2.4014,200
2010-05-10$2.36$2.3628,300
2010-05-07$2.40$2.4038,200
2010-05-06$2.57$2.572,500
2010-05-05$2.56$2.567,200
2010-05-04$2.60$2.604,000
2010-05-03$2.65$2.6511,500
2010-04-30$2.63$2.635,800
2010-04-29$2.60$2.6016,600
2010-04-28$2.67$2.679,500
2010-04-27$2.60$2.6014,100
2010-04-26$2.72$2.7222,800
2010-04-23$2.75$2.7514,700
2010-04-22$2.80$2.8014,000
2010-04-21$2.79$2.796,600
2010-04-20$2.78$2.784,200
2010-04-19$2.80$2.8021,500
2010-04-16$2.77$2.7713,000
2010-04-15$2.90$2.9022,600
2010-04-14$2.91$2.9113,500
2010-04-13$2.92$2.9212,700
2010-04-12$2.99$2.9966,200
2010-04-09$3.16$3.1610,900
2010-04-08$3.20$3.204,000
2010-04-07$3.10$3.1011,500
2010-04-06$3.10$3.1022,100
2010-04-05$3.31$3.3123,500
2010-04-01$3.38$3.3827,400
2010-03-31$3.35$3.359,500
2010-03-30$3.24$3.248,800
2010-03-29$3.35$3.3540,600
2010-03-26$3.11$3.1125,400
2010-03-25$3.22$3.2228,100
2010-03-24$3.45$3.458,600
2010-03-23$3.47$3.474,400
2010-03-22$3.47$3.477,400
2010-03-19$3.50$3.5014,000
2010-03-18$3.46$3.4629,400
2010-03-17$3.50$3.5014,400
2010-03-16$3.52$3.5211,000
2010-03-15$3.59$3.5925,900
2010-03-12$3.75$3.758,500
2010-03-11$3.84$3.849,800
2010-03-10$3.90$3.908,100
2010-03-09$3.91$3.9111,700
2010-03-08$3.91$3.9117,700
2010-03-05$3.68$3.68106,800
2010-03-04$3.92$3.9214,300
2010-03-03$3.92$3.9230,100
2010-03-02$3.84$3.8428,500
2010-03-01$3.86$3.8691,800
2010-02-26$4.39$4.391,600
2010-02-25$4.45$4.4520,400
2010-02-24$4.43$4.4310,800
2010-02-23$4.35$4.3528,200
2010-02-22$4.27$4.2710,200
2010-02-19$4.12$4.1222,400
2010-02-18$4.13$4.1336,800
2010-02-17$3.98$3.9816,100
2010-02-16$3.70$3.7034,800
2010-02-12$3.44$3.4496,600
2010-02-11$3.19$3.19102,400
2010-02-10$3.64$3.6449,200
2010-02-09$3.53$3.537,800
2010-02-08$3.57$3.5725,000
2010-02-05$3.32$3.3211,600
2010-02-04$3.31$3.318,200
2010-02-03$3.62$3.6217,900
2010-02-02$3.48$3.4818,100
2010-02-01$3.45$3.4512,700
2010-01-29$3.38$3.3835,300
2010-01-28$3.39$3.3916,100
2010-01-27$3.40$3.4081,700
2010-01-26$3.80$3.8060,500
2010-01-25$3.81$3.8167,500
2010-01-22$4.16$4.1628,700
2010-01-21$4.19$4.1989,300
2010-01-20$4.75$4.7534,900
2010-01-19$4.58$4.5817,900
2010-01-15$4.81$4.8130,100
2010-01-14$4.57$4.5761,600
2010-01-13$5.01$5.0121,900
2010-01-12$5.16$5.1611,700
2010-01-11$5.19$5.1915,900
2010-01-08$5.15$5.154,400
2010-01-07$5.20$5.2039,800
2010-01-06$5.58$5.5820,000
2010-01-05$5.40$5.4035,200
2010-01-04$5.37$5.3750,000