NASDAQ:CYCN | Historical Stock Price | Cyclerion Therapeutics, Inc.

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
2019-03-18 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$1.03$3.45$11.61$39.04$131.30$441.632019-03-182026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

View year

Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$1.27$1.2730,500
2025-12-30$1.18$1.1822,000
2025-12-29$1.20$1.2034,000
2025-12-26$1.35$1.3532,900
2025-12-24$1.38$1.3810,000
2025-12-23$1.43$1.4321,000
2025-12-22$1.47$1.4755,900
2025-12-19$1.45$1.4527,500
2025-12-18$1.47$1.4719,900
2025-12-17$1.52$1.5216,700
2025-12-16$1.53$1.5339,400
2025-12-15$1.60$1.6046,900
2025-12-12$1.51$1.5164,300
2025-12-11$1.68$1.6838,400
2025-12-10$1.72$1.7233,200
2025-12-09$1.66$1.6611,200
2025-12-08$1.69$1.69128,000
2025-12-05$1.68$1.6831,800
2025-12-04$1.70$1.70147,100
2025-12-03$1.53$1.5356,300
2025-12-02$1.53$1.5334,300
2025-12-01$1.56$1.5622,800
2025-11-28$1.58$1.5825,900
2025-11-26$1.52$1.5242,100
2025-11-25$1.47$1.4752,800
2025-11-24$1.49$1.4943,200
2025-11-21$1.48$1.4845,100
2025-11-20$1.42$1.4290,800
2025-11-19$1.41$1.4133,000
2025-11-18$1.42$1.4245,600
2025-11-17$1.39$1.3983,900
2025-11-14$1.36$1.3675,800
2025-11-13$1.44$1.44276,600
2025-11-12$1.42$1.42296,300
2025-11-11$1.61$1.612,996,700
2025-11-10$1.80$1.8016,892,300
2025-11-07$1.62$1.6218,700
2025-11-06$1.69$1.699,100
2025-11-05$1.75$1.7510,300
2025-11-04$1.69$1.6919,500
2025-11-03$1.86$1.8646,200
2025-10-31$1.87$1.8730,600
2025-10-30$1.92$1.9246,400
2025-10-29$1.97$1.9719,400
2025-10-28$2.04$2.0423,300
2025-10-27$2.10$2.1017,700
2025-10-24$2.12$2.1222,000
2025-10-23$2.13$2.1334,400
2025-10-22$2.08$2.0861,000
2025-10-21$2.16$2.1623,800
2025-10-20$2.20$2.2048,900
2025-10-17$2.24$2.2426,700
2025-10-16$2.25$2.25116,300
2025-10-15$2.37$2.3729,100
2025-10-14$2.37$2.37102,900
2025-10-13$2.30$2.3028,900
2025-10-10$2.33$2.3381,900
2025-10-09$2.47$2.4742,000
2025-10-08$2.52$2.5280,100
2025-10-07$2.55$2.55136,700
2025-10-06$2.39$2.39184,500
2025-10-03$2.50$2.5059,000
2025-10-02$2.48$2.4882,800
2025-10-01$2.37$2.37124,200
2025-09-30$2.30$2.3095,700
2025-09-29$2.34$2.34152,000
2025-09-26$2.42$2.42190,700
2025-09-25$2.73$2.73501,800
2025-09-24$3.25$3.2514,450,200
2025-09-23$3.02$3.025,255,200
2025-09-22$3.04$3.04108,200
2025-09-19$2.38$2.3816,100
2025-09-18$2.34$2.349,300
2025-09-17$2.33$2.3316,100
2025-09-16$2.45$2.4517,700
2025-09-15$2.36$2.3618,300
2025-09-12$2.46$2.4624,300
2025-09-11$2.55$2.5525,700
2025-09-10$2.36$2.3664,000
2025-09-09$2.60$2.6034,500
2025-09-08$2.26$2.2626,000
2025-09-05$2.22$2.2229,400
2025-09-04$2.39$2.3914,700
2025-09-03$2.43$2.4316,800
2025-09-02$2.51$2.518,100
2025-08-29$2.47$2.478,100
2025-08-28$2.57$2.5765,300
2025-08-27$2.57$2.5736,600
2025-08-26$2.76$2.7651,900
2025-08-25$2.55$2.5512,800
2025-08-22$2.49$2.499,300
2025-08-21$2.38$2.3818,500
2025-08-20$2.38$2.389,900
2025-08-19$2.34$2.3417,000
2025-08-18$2.54$2.5414,900
2025-08-15$2.36$2.3629,800
2025-08-14$2.33$2.3321,100
2025-08-13$2.47$2.4725,100
2025-08-12$2.40$2.4049,300
2025-08-11$2.17$2.1713,300
2025-08-08$2.29$2.2911,500
2025-08-07$2.36$2.3624,400
2025-08-06$2.39$2.3960,400
2025-08-05$2.89$2.8970,800
2025-08-04$2.79$2.7936,200
2025-08-01$2.59$2.5921,500
2025-07-31$2.65$2.6580,000
2025-07-30$2.64$2.6439,900
2025-07-29$2.73$2.7343,900
2025-07-28$2.78$2.7841,000
2025-07-25$2.86$2.8662,600
2025-07-24$3.02$3.0279,500
2025-07-23$3.00$3.0090,100
2025-07-22$3.19$3.1975,700
2025-07-21$3.37$3.37150,900
2025-07-18$3.54$3.54145,800
2025-07-17$3.02$3.0218,300
2025-07-16$3.05$3.0561,600
2025-07-15$3.18$3.1811,700
2025-07-14$3.30$3.3044,900
2025-07-11$3.64$3.6454,800
2025-07-10$3.55$3.5546,600
2025-07-09$3.47$3.4738,700
2025-07-08$3.14$3.1418,300
2025-07-07$3.09$3.0929,100
2025-07-03$3.36$3.3619,400
2025-07-02$3.30$3.30141,800
2025-07-01$3.10$3.108,900
2025-06-30$2.91$2.9122,100
2025-06-27$3.00$3.0095,500
2025-06-26$2.81$2.8183,300
2025-06-25$2.97$2.974,100
2025-06-24$3.00$3.009,800
2025-06-23$2.88$2.888,600
2025-06-20$2.95$2.9517,400
2025-06-18$3.15$3.153,300
2025-06-17$3.11$3.1112,100
2025-06-16$3.09$3.094,300
2025-06-13$3.11$3.119,400
2025-06-12$3.10$3.1016,200
2025-06-11$3.01$3.0113,700
2025-06-10$3.14$3.149,200
2025-06-09$3.14$3.1410,300
2025-06-06$3.18$3.1815,100
2025-06-05$3.17$3.178,900
2025-06-04$3.13$3.1320,400
2025-06-03$3.21$3.2148,300
2025-06-02$2.96$2.9612,900
2025-05-30$2.81$2.8133,800
2025-05-29$2.77$2.7718,300
2025-05-28$2.75$2.7522,500
2025-05-27$2.92$2.9256,400
2025-05-23$3.27$3.273,900
2025-05-22$3.25$3.2532,700
2025-05-21$3.07$3.0718,100
2025-05-20$3.28$3.2816,400
2025-05-19$3.11$3.114,600
2025-05-16$3.04$3.047,000
2025-05-15$2.92$2.924,900
2025-05-14$3.05$3.059,500
2025-05-13$3.12$3.1215,500
2025-05-12$3.24$3.2424,100
2025-05-09$3.28$3.2840,400
2025-05-08$3.16$3.164,400
2025-05-07$3.43$3.4340,200
2025-05-06$3.01$3.0112,600
2025-05-05$2.97$2.973,800
2025-05-02$3.15$3.1514,700
2025-05-01$3.30$3.308,100
2025-04-30$3.45$3.457,800
2025-04-29$3.35$3.3520,800
2025-04-28$3.70$3.7050,800
2025-04-25$3.25$3.2516,700
2025-04-24$3.01$3.0116,100
2025-04-23$2.95$2.955,600
2025-04-22$2.99$2.9920,500
2025-04-21$2.70$2.702,500
2025-04-17$2.75$2.752,600
2025-04-16$2.68$2.683,200
2025-04-15$2.69$2.692,500
2025-04-14$2.85$2.8537,800
2025-04-11$2.56$2.563,800
2025-04-10$2.56$2.569,000
2025-04-09$2.52$2.528,400
2025-04-08$2.52$2.529,400
2025-04-07$2.47$2.4722,300
2025-04-04$2.50$2.5014,600
2025-04-03$2.58$2.5823,600
2025-04-02$2.61$2.6116,900
2025-04-01$2.54$2.5411,800
2025-03-31$2.50$2.5023,500
2025-03-28$2.57$2.5712,700
2025-03-27$2.61$2.616,800
2025-03-26$2.57$2.5715,200
2025-03-25$2.72$2.7218,300
2025-03-24$2.82$2.8215,000
2025-03-21$2.75$2.753,600
2025-03-20$2.71$2.7117,400
2025-03-19$2.54$2.548,900
2025-03-18$2.58$2.5851,200
2025-03-17$2.55$2.5516,700
2025-03-14$2.53$2.537,800
2025-03-13$2.47$2.478,300
2025-03-12$2.55$2.5511,300
2025-03-11$2.57$2.5728,100
2025-03-10$2.63$2.6325,600
2025-03-07$2.80$2.8069,300
2025-03-06$2.60$2.60163,600
2025-03-05$2.42$2.42125,500
2025-03-04$2.63$2.6342,400
2025-03-03$2.40$2.4065,500
2025-02-28$2.67$2.6740,800
2025-02-27$2.82$2.82170,700
2025-02-26$2.77$2.77102,800
2025-02-25$2.69$2.69124,100
2025-02-24$2.67$2.6764,500
2025-02-21$2.82$2.82158,500
2025-02-20$2.71$2.7157,000
2025-02-19$2.88$2.8896,000
2025-02-18$3.11$3.1154,500
2025-02-14$3.12$3.1250,800
2025-02-13$3.03$3.03104,500
2025-02-12$3.36$3.36230,600
2025-02-11$3.24$3.24252,900
2025-02-10$3.82$3.82410,500
2025-02-07$4.21$4.21165,900
2025-02-06$4.25$4.25211,200
2025-02-05$4.48$4.48452,000
2025-02-04$4.19$4.191,302,400
2025-02-03$5.32$5.3229,427,000
2025-01-31$3.92$3.9282,480,300
2025-01-30$2.54$2.54605,800
2025-01-29$2.37$2.378,800
2025-01-28$2.45$2.4540,700
2025-01-27$2.71$2.7124,100
2025-01-24$2.68$2.6864,200
2025-01-23$2.92$2.9233,900
2025-01-22$2.95$2.9523,000
2025-01-21$2.90$2.9052,400
2025-01-17$2.99$2.9912,400
2025-01-16$2.91$2.9132,500
2025-01-15$3.01$3.0141,500
2025-01-14$2.92$2.92269,200
2025-01-13$3.23$3.2355,400
2025-01-10$3.29$3.2934,300
2025-01-08$3.24$3.2443,900
2025-01-07$3.25$3.2566,300
2025-01-06$3.14$3.14127,000
2025-01-03$3.22$3.2244,500
2025-01-02$3.29$3.2949,500