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.

View year

Historical Stock Price — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2015-12-31$5.25$5.258,500
2015-12-30$5.32$5.322,600
2015-12-29$5.15$5.155,500
2015-12-28$5.20$5.202,600
2015-12-24$5.11$5.11600
2015-12-23$5.25$5.250
2015-12-22$5.25$5.251,300
2015-12-21$5.19$5.193,100
2015-12-18$5.10$5.102,300
2015-12-17$5.18$5.187,900
2015-12-16$5.19$5.19400
2015-12-15$5.48$5.481,100
2015-12-14$5.13$5.13500
2015-12-11$5.10$5.104,500
2015-12-10$5.27$5.2722,600
2015-12-09$5.35$5.353,200
2015-12-08$5.35$5.351,100
2015-12-07$5.30$5.3018,200
2015-12-04$5.46$5.465,900
2015-12-03$5.49$5.4911,200
2015-12-02$5.66$5.6610,600
2015-12-01$5.73$5.732,500
2015-11-30$5.83$5.831,500
2015-11-27$5.66$5.661,100
2015-11-25$5.83$5.834,500
2015-11-24$5.60$5.602,100
2015-11-23$5.52$5.5223,400
2015-11-20$5.55$5.554,800
2015-11-19$5.54$5.542,800
2015-11-18$5.58$5.581,600
2015-11-17$5.65$5.651,300
2015-11-16$5.54$5.54900
2015-11-13$5.61$5.613,200
2015-11-12$5.60$5.606,700
2015-11-11$5.60$5.60200
2015-11-10$5.74$5.741,500
2015-11-09$5.90$5.900
2015-11-06$5.90$5.903,900
2015-11-05$5.85$5.85100
2015-11-04$5.95$5.951,000
2015-11-03$6.00$6.005,300
2015-11-02$5.72$5.721,500
2015-10-30$5.96$5.961,000
2015-10-29$5.95$5.950
2015-10-28$5.95$5.951,300
2015-10-27$5.60$5.601,300
2015-10-26$5.60$5.60800
2015-10-23$5.75$5.752,100
2015-10-22$5.80$5.802,900
2015-10-21$5.76$5.76800
2015-10-20$5.68$5.683,400
2015-10-19$6.01$6.012,000
2015-10-16$6.08$6.087,000
2015-10-15$5.91$5.912,900
2015-10-14$5.86$5.860
2015-10-13$5.86$5.86500
2015-10-12$5.60$5.601,800
2015-10-09$5.76$5.762,000
2015-10-08$5.80$5.80500
2015-10-07$5.78$5.787,800
2015-10-06$5.84$5.840
2015-10-05$5.84$5.842,400
2015-10-02$5.68$5.682,800
2015-10-01$5.80$5.805,400
2015-09-30$5.94$5.94600
2015-09-29$5.86$5.86400
2015-09-28$5.87$5.877,800
2015-09-25$5.73$5.736,400
2015-09-24$5.96$5.961,700
2015-09-23$6.18$6.181,200
2015-09-22$6.12$6.12900
2015-09-21$6.05$6.051,900
2015-09-18$5.95$5.959,800
2015-09-17$6.20$6.201,600
2015-09-16$6.46$6.461,400
2015-09-15$6.34$6.343,400
2015-09-14$6.09$6.091,500
2015-09-11$6.22$6.221,800
2015-09-10$6.21$6.212,700
2015-09-09$6.29$6.292,900
2015-09-08$6.20$6.207,200
2015-09-04$6.12$6.125,500
2015-09-03$6.23$6.2314,200
2015-09-02$6.50$6.504,000
2015-09-01$6.72$6.726,700
2015-08-31$7.25$7.2515,200
2015-08-28$7.56$7.562,200
2015-08-27$7.73$7.7310,700
2015-08-26$7.27$7.271,600
2015-08-25$7.19$7.19200
2015-08-24$6.85$6.853,800
2015-08-21$7.02$7.0212,900
2015-08-20$7.28$7.2835,600
2015-08-19$7.63$7.637,300
2015-08-18$7.69$7.690
2015-08-17$7.69$7.691,700
2015-08-14$7.71$7.712,700
2015-08-13$7.58$7.581,300
2015-08-12$7.65$7.6511,700
2015-08-11$7.88$7.883,000
2015-08-10$7.90$7.908,200
2015-08-07$7.58$7.585,000
2015-08-06$7.95$7.953,400
2015-08-05$8.04$8.044,000
2015-08-04$7.86$7.862,800
2015-08-03$7.83$7.832,100
2015-07-31$8.11$8.11900
2015-07-30$8.13$8.13600
2015-07-29$7.86$7.863,000
2015-07-28$8.04$8.044,200
2015-07-27$7.74$7.746,700
2015-07-24$8.05$8.054,200
2015-07-23$7.96$7.962,400
2015-07-22$7.94$7.9416,500
2015-07-21$7.96$7.965,400
2015-07-20$8.12$8.124,200
2015-07-17$8.10$8.101,900
2015-07-16$8.01$8.0112,800
2015-07-15$8.12$8.1246,900
2015-07-14$8.74$8.747,700
2015-07-13$8.85$8.851,100
2015-07-10$8.89$8.891,500
2015-07-09$8.67$8.673,900
2015-07-08$8.75$8.759,700
2015-07-07$9.21$9.215,100
2015-07-06$9.48$9.489,300
2015-07-02$9.55$9.552,000
2015-07-01$9.63$9.638,300
2015-06-30$9.47$9.4719,800
2015-06-29$10.20$10.2021,700
2015-06-26$10.25$10.2514,800
2015-06-25$9.90$9.905,400
2015-06-24$9.72$9.722,000
2015-06-23$9.87$9.877,100
2015-06-22$9.87$9.8711,300
2015-06-19$9.60$9.604,100
2015-06-18$9.45$9.459,500
2015-06-17$9.35$9.3513,500
2015-06-16$9.22$9.2212,200
2015-06-15$9.31$9.317,500
2015-06-12$9.30$9.308,600
2015-06-11$9.26$9.263,100
2015-06-10$9.15$9.153,200
2015-06-09$9.19$9.195,500
2015-06-08$9.23$9.237,500
2015-06-05$9.06$9.064,600
2015-06-04$9.39$9.391,400
2015-06-03$9.42$9.423,400
2015-06-02$9.31$9.319,700
2015-06-01$9.51$9.517,300
2015-05-29$9.38$9.3810,100
2015-05-28$9.29$9.293,700
2015-05-27$9.18$9.184,600
2015-05-26$9.16$9.16700
2015-05-22$9.15$9.151,500
2015-05-21$9.18$9.185,500
2015-05-20$9.18$9.182,400
2015-05-19$9.15$9.158,000
2015-05-18$9.16$9.1611,600
2015-05-15$9.14$9.14900
2015-05-14$9.11$9.116,800
2015-05-13$9.02$9.023,400
2015-05-12$9.00$9.008,300
2015-05-11$8.93$8.931,400
2015-05-08$9.00$9.004,900
2015-05-07$8.97$8.97500
2015-05-06$8.97$8.9710,100
2015-05-05$9.02$9.029,800
2015-05-04$9.30$9.303,500
2015-05-01$9.09$9.0911,100
2015-04-30$9.10$9.101,200
2015-04-29$9.15$9.151,500
2015-04-28$9.11$9.115,800
2015-04-27$9.11$9.117,200
2015-04-24$9.11$9.1115,100
2015-04-23$9.24$9.242,800
2015-04-22$9.23$9.233,500
2015-04-21$9.11$9.1127,300
2015-04-20$9.18$9.1826,500
2015-04-17$9.42$9.4211,100
2015-04-16$9.60$9.6010,200
2015-04-15$9.40$9.4014,900
2015-04-14$9.64$9.646,400
2015-04-13$9.69$9.693,100
2015-04-10$9.80$9.8014,400
2015-04-09$9.74$9.744,700
2015-04-08$9.85$9.8534,000
2015-04-07$9.65$9.6511,000
2015-04-06$9.64$9.6432,700
2015-04-02$8.92$8.9219,400
2015-04-01$8.75$8.7518,500
2015-03-31$8.42$8.4219,900
2015-03-30$8.60$8.605,600
2015-03-27$8.54$8.546,000
2015-03-26$8.39$8.3921,800
2015-03-25$8.71$8.712,700
2015-03-24$8.83$8.832,600
2015-03-23$8.80$8.806,800
2015-03-20$8.72$8.7214,200
2015-03-19$8.91$8.919,100
2015-03-18$8.97$8.972,200
2015-03-17$8.99$8.9919,500
2015-03-16$9.01$9.0112,900
2015-03-13$8.95$8.956,300
2015-03-12$8.92$8.9219,300
2015-03-11$8.55$8.5532,600
2015-03-10$8.24$8.2421,100
2015-03-09$8.07$8.0719,300
2015-03-06$7.95$7.954,300
2015-03-05$8.08$8.08600
2015-03-04$7.97$7.971,200
2015-03-03$8.14$8.141,800
2015-03-02$8.09$8.094,700
2015-02-27$8.14$8.143,400
2015-02-26$8.12$8.124,400
2015-02-25$8.16$8.168,100
2015-02-24$8.18$8.186,500
2015-02-23$8.02$8.029,000
2015-02-20$8.25$8.258,000
2015-02-19$8.38$8.381,800
2015-02-18$8.40$8.4011,500
2015-02-17$8.32$8.3258,400
2015-02-13$8.72$8.7224,100
2015-02-12$8.59$8.5980,200
2015-02-11$7.30$7.303,100
2015-02-10$7.32$7.323,900
2015-02-09$7.25$7.255,300
2015-02-06$7.23$7.238,300
2015-02-05$7.18$7.182,600
2015-02-04$7.11$7.119,900
2015-02-03$7.03$7.0320,500
2015-02-02$6.58$6.586,400
2015-01-30$6.46$6.469,800
2015-01-29$6.49$6.499,900
2015-01-28$6.48$6.488,100
2015-01-27$6.35$6.353,200
2015-01-26$6.26$6.26200
2015-01-23$6.33$6.339,900
2015-01-22$6.10$6.1041,400
2015-01-21$6.32$6.327,300
2015-01-20$6.39$6.3911,500
2015-01-16$6.52$6.5220,000
2015-01-15$6.69$6.691,300
2015-01-14$6.67$6.676,900
2015-01-13$6.77$6.776,900
2015-01-12$6.61$6.613,700
2015-01-09$6.70$6.7014,100
2015-01-08$6.62$6.625,300
2015-01-07$6.70$6.705,900
2015-01-06$6.64$6.6413,200
2015-01-05$6.64$6.6413,500
2015-01-02$6.90$6.903,700