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 — 2016

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volume
2016-12-30$4.30$4.301,400
2016-12-29$4.29$4.292,100
2016-12-28$4.15$4.150
2016-12-27$4.15$4.1510,000
2016-12-23$3.95$3.9511,200
2016-12-22$3.85$3.853,600
2016-12-21$3.95$3.9517,400
2016-12-20$3.75$3.7535,900
2016-12-19$3.75$3.753,100
2016-12-16$3.85$3.858,200
2016-12-15$3.65$3.6514,300
2016-12-14$3.78$3.783,800
2016-12-13$3.90$3.902,900
2016-12-12$3.80$3.800
2016-12-09$3.80$3.804,200
2016-12-08$3.80$3.803,000
2016-12-07$3.85$3.8515,600
2016-12-06$3.60$3.6011,600
2016-12-05$3.65$3.657,500
2016-12-02$3.84$3.8420,500
2016-12-01$3.85$3.8511,300
2016-11-30$3.85$3.854,300
2016-11-29$3.85$3.853,400
2016-11-28$3.90$3.901,200
2016-11-25$3.95$3.951,300
2016-11-23$3.91$3.911,400
2016-11-22$3.95$3.951,500
2016-11-21$3.90$3.901,000
2016-11-18$3.98$3.980
2016-11-17$3.98$3.98400
2016-11-16$3.95$3.955,500
2016-11-15$3.95$3.951,300
2016-11-14$3.90$3.906,400
2016-11-11$4.00$4.0014,200
2016-11-10$4.15$4.1547,600
2016-11-09$3.88$3.881,400
2016-11-08$3.70$3.702,200
2016-11-07$3.71$3.715,000
2016-11-04$3.93$3.933,000
2016-11-03$4.10$4.10600
2016-11-02$3.75$3.75200
2016-11-01$3.75$3.758,600
2016-10-31$3.95$3.953,000
2016-10-28$4.05$4.051,100
2016-10-27$4.08$4.08300
2016-10-26$4.08$4.08600
2016-10-25$4.07$4.074,000
2016-10-24$4.12$4.12900
2016-10-21$4.10$4.109,800
2016-10-20$4.07$4.071,100
2016-10-19$4.10$4.102,800
2016-10-18$3.94$3.94500
2016-10-17$3.90$3.908,500
2016-10-14$3.70$3.706,300
2016-10-13$3.81$3.813,100
2016-10-12$3.74$3.7428,700
2016-10-11$3.75$3.751,200
2016-10-10$3.75$3.753,800
2016-10-07$3.69$3.697,000
2016-10-06$3.75$3.752,700
2016-10-05$3.78$3.78400
2016-10-04$3.61$3.611,400
2016-10-03$3.75$3.751,300
2016-09-30$3.69$3.690
2016-09-29$3.69$3.69300
2016-09-28$3.70$3.701,200
2016-09-27$3.62$3.621,600
2016-09-26$3.67$3.67500
2016-09-23$3.89$3.89200
2016-09-22$3.66$3.6630,600
2016-09-21$3.79$3.792,000
2016-09-20$3.77$3.771,000
2016-09-19$3.90$3.905,100
2016-09-16$4.00$4.004,600
2016-09-15$3.44$3.441,200
2016-09-14$3.46$3.46600
2016-09-13$3.43$3.434,000
2016-09-12$3.50$3.501,000
2016-09-09$3.48$3.48600
2016-09-08$3.47$3.476,700
2016-09-07$3.62$3.622,800
2016-09-06$3.56$3.561,600
2016-09-02$3.71$3.716,000
2016-09-01$3.62$3.6213,300
2016-08-31$3.93$3.93500
2016-08-30$3.83$3.833,200
2016-08-29$3.94$3.942,100
2016-08-26$3.93$3.932,500
2016-08-25$4.08$4.080
2016-08-24$4.08$4.085,400
2016-08-23$3.95$3.953,200
2016-08-22$3.95$3.95700
2016-08-19$3.96$3.965,600
2016-08-18$3.78$3.786,700
2016-08-17$3.75$3.7527,400
2016-08-16$3.98$3.989,700
2016-08-15$4.20$4.203,800
2016-08-12$4.30$4.302,700
2016-08-11$4.28$4.28800
2016-08-10$4.36$4.36300
2016-08-09$4.36$4.36800
2016-08-08$4.25$4.254,600
2016-08-05$4.43$4.436,800
2016-08-04$4.48$4.48300
2016-08-03$4.35$4.354,400
2016-08-02$4.75$4.75400
2016-08-01$4.60$4.607,900
2016-07-29$4.80$4.805,600
2016-07-28$4.73$4.730
2016-07-27$4.73$4.730
2016-07-26$4.73$4.73200
2016-07-25$4.73$4.731,200
2016-07-22$4.72$4.721,700
2016-07-21$4.91$4.911,600
2016-07-20$4.95$4.95500
2016-07-19$4.83$4.837,300
2016-07-18$5.00$5.00100
2016-07-15$5.00$5.00200
2016-07-14$5.13$5.13600
2016-07-13$5.12$5.125,400
2016-07-12$5.15$5.1510,300
2016-07-11$5.21$5.21600
2016-07-08$5.21$5.21500
2016-07-07$5.16$5.16800
2016-07-06$5.36$5.368,700
2016-07-05$5.33$5.33700
2016-07-01$5.14$5.140
2016-06-30$5.14$5.14400
2016-06-29$5.12$5.1211,700
2016-06-28$5.23$5.2312,200
2016-06-27$5.15$5.1516,400
2016-06-24$5.00$5.002,900
2016-06-23$4.93$4.933,200
2016-06-22$4.90$4.906,100
2016-06-21$5.05$5.053,800
2016-06-20$4.90$4.9010,500
2016-06-17$5.29$5.293,200
2016-06-16$5.25$5.254,600
2016-06-15$5.09$5.097,800
2016-06-14$5.12$5.121,300
2016-06-13$5.27$5.272,700
2016-06-10$5.35$5.351,300
2016-06-09$5.31$5.318,300
2016-06-08$5.39$5.39400
2016-06-07$5.31$5.317,800
2016-06-06$5.42$5.423,900
2016-06-03$5.19$5.1911,000
2016-06-02$5.07$5.07500
2016-06-01$5.05$5.0519,400
2016-05-31$4.95$4.954,100
2016-05-27$5.03$5.031,800
2016-05-26$4.96$4.963,100
2016-05-25$4.99$4.991,100
2016-05-24$5.06$5.066,800
2016-05-23$4.95$4.951,000
2016-05-20$5.05$5.054,200
2016-05-19$5.41$5.410
2016-05-18$5.41$5.417,200
2016-05-17$5.45$5.4510,600
2016-05-16$5.21$5.211,300
2016-05-13$5.65$5.650
2016-05-12$5.65$5.658,200
2016-05-11$5.46$5.463,400
2016-05-10$5.41$5.417,900
2016-05-09$5.50$5.5013,100
2016-05-06$5.00$5.003,000
2016-05-05$4.90$4.90400
2016-05-04$4.90$4.908,600
2016-05-03$4.92$4.922,200
2016-05-02$4.91$4.91400
2016-04-29$4.89$4.89700
2016-04-28$4.90$4.900
2016-04-27$4.90$4.902,500
2016-04-26$4.98$4.98500
2016-04-25$4.91$4.912,300
2016-04-22$4.95$4.953,300
2016-04-21$4.93$4.930
2016-04-20$4.93$4.93400
2016-04-19$4.83$4.83300
2016-04-18$4.76$4.761,000
2016-04-15$4.87$4.871,500
2016-04-14$5.00$5.002,800
2016-04-13$5.02$5.020
2016-04-12$5.02$5.02200
2016-04-11$5.02$5.025,000
2016-04-08$5.08$5.08900
2016-04-07$4.87$4.872,500
2016-04-06$4.97$4.971,800
2016-04-05$5.25$5.252,900
2016-04-04$5.20$5.205,600
2016-04-01$5.16$5.166,800
2016-03-31$4.98$4.983,200
2016-03-30$5.19$5.19800
2016-03-29$5.05$5.053,500
2016-03-28$5.17$5.171,000
2016-03-24$5.12$5.124,100
2016-03-23$5.06$5.0618,700
2016-03-22$4.99$4.996,000
2016-03-21$5.06$5.0619,400
2016-03-18$5.06$5.0612,600
2016-03-17$4.92$4.922,600
2016-03-16$4.96$4.9631,400
2016-03-15$4.90$4.90400
2016-03-14$4.92$4.921,600
2016-03-11$4.96$4.961,500
2016-03-10$4.74$4.743,100
2016-03-09$4.87$4.871,200
2016-03-08$4.98$4.98400
2016-03-07$4.62$4.62700
2016-03-04$4.60$4.6013,600
2016-03-03$4.45$4.459,000
2016-03-02$4.28$4.283,300
2016-03-01$4.21$4.21100
2016-02-29$4.46$4.461,100
2016-02-26$4.42$4.421,400
2016-02-25$4.18$4.181,000
2016-02-24$4.36$4.36300
2016-02-23$4.08$4.08400
2016-02-22$4.14$4.142,100
2016-02-19$4.14$4.14200
2016-02-18$4.10$4.1011,500
2016-02-17$4.50$4.5019,000
2016-02-16$4.16$4.166,100
2016-02-12$4.12$4.1221,200
2016-02-11$3.89$3.89175,700
2016-02-10$4.93$4.931,400
2016-02-09$4.74$4.741,900
2016-02-08$4.80$4.8015,700
2016-02-05$5.00$5.003,900
2016-02-04$5.11$5.11300
2016-02-03$5.11$5.114,000
2016-02-02$5.18$5.183,500
2016-02-01$5.14$5.141,100
2016-01-29$5.01$5.012,100
2016-01-28$5.12$5.125,700
2016-01-27$5.18$5.182,000
2016-01-26$5.25$5.2511,100
2016-01-25$5.36$5.362,600
2016-01-22$5.41$5.414,900
2016-01-21$4.99$4.992,800
2016-01-20$5.06$5.067,900
2016-01-19$4.96$4.965,700
2016-01-15$5.00$5.003,300
2016-01-14$5.16$5.1613,200
2016-01-13$5.05$5.054,400
2016-01-12$5.26$5.261,500
2016-01-11$5.26$5.26300
2016-01-08$5.09$5.097,300
2016-01-07$5.10$5.1021,000
2016-01-06$5.06$5.0630,700
2016-01-05$5.06$5.0618,800
2016-01-04$5.11$5.113,600