NASDAQ:ALEC | Historical Stock Price | Alector, 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
2019-02-07 to 2026-09-04
Data captured

Stock Price Chart

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

$0.86$1.86$4.03$8.75$18.96$41.092019-02-072026-08-27

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

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Historical Stock Price — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$7.98$7.98373,000
2023-12-28$8.00$8.00459,700
2023-12-27$7.95$7.95377,000
2023-12-26$8.00$8.00377,800
2023-12-22$8.01$8.01425,200
2023-12-21$7.99$7.99412,700
2023-12-20$7.88$7.88824,500
2023-12-19$8.39$8.39899,900
2023-12-18$8.16$8.16817,500
2023-12-15$8.28$8.281,454,200
2023-12-14$8.00$8.002,096,700
2023-12-13$6.90$6.90875,500
2023-12-12$6.65$6.65534,600
2023-12-11$6.23$6.23617,700
2023-12-08$6.12$6.12668,300
2023-12-07$5.80$5.80440,300
2023-12-06$5.64$5.64395,900
2023-12-05$5.49$5.49824,900
2023-12-04$5.62$5.62774,300
2023-12-01$5.56$5.56484,700
2023-11-30$5.42$5.42869,200
2023-11-29$5.43$5.43547,300
2023-11-28$5.16$5.16552,100
2023-11-27$4.96$4.96667,200
2023-11-24$5.02$5.02166,700
2023-11-22$4.84$4.84382,400
2023-11-21$4.78$4.78547,800
2023-11-20$4.92$4.92852,600
2023-11-17$4.31$4.311,424,500
2023-11-16$3.94$3.94757,600
2023-11-15$3.97$3.97912,000
2023-11-14$4.30$4.30875,100
2023-11-13$3.77$3.771,273,000
2023-11-10$4.50$4.50763,800
2023-11-09$4.85$4.85585,300
2023-11-08$5.33$5.33736,300
2023-11-07$5.75$5.75354,400
2023-11-06$5.47$5.47490,000
2023-11-03$5.88$5.88630,400
2023-11-02$5.56$5.56467,100
2023-11-01$5.46$5.46570,400
2023-10-31$5.20$5.20472,100
2023-10-30$5.16$5.16367,100
2023-10-27$5.13$5.13759,300
2023-10-26$5.28$5.28402,900
2023-10-25$5.12$5.12423,800
2023-10-24$5.28$5.28476,900
2023-10-23$5.15$5.15429,100
2023-10-20$5.29$5.29374,500
2023-10-19$5.20$5.20375,800
2023-10-18$5.69$5.69334,800
2023-10-17$6.04$6.04428,500
2023-10-16$6.09$6.091,028,500
2023-10-13$6.00$6.001,141,600
2023-10-12$5.82$5.82603,000
2023-10-11$6.28$6.28307,300
2023-10-10$6.31$6.31361,400
2023-10-09$6.21$6.21408,500
2023-10-06$6.68$6.68416,800
2023-10-05$6.48$6.48551,800
2023-10-04$6.09$6.09530,300
2023-10-03$6.26$6.26475,900
2023-10-02$6.19$6.19535,300
2023-09-29$6.48$6.48545,900
2023-09-28$6.69$6.69577,100
2023-09-27$6.60$6.60617,100
2023-09-26$6.44$6.44766,600
2023-09-25$6.98$6.982,793,200
2023-09-22$6.88$6.881,113,400
2023-09-21$6.03$6.03550,700
2023-09-20$6.07$6.071,079,300
2023-09-19$6.58$6.581,956,700
2023-09-18$6.13$6.13758,000
2023-09-15$6.56$6.561,196,000
2023-09-14$6.37$6.37862,700
2023-09-13$6.12$6.12718,600
2023-09-12$6.03$6.031,153,000
2023-09-11$5.83$5.831,631,200
2023-09-08$5.70$5.70416,100
2023-09-07$5.61$5.61618,300
2023-09-06$5.26$5.26580,300
2023-09-05$5.20$5.20887,100
2023-09-01$5.57$5.57406,600
2023-08-31$5.45$5.452,126,000
2023-08-30$5.65$5.65403,900
2023-08-29$5.66$5.66286,700
2023-08-28$5.70$5.70378,400
2023-08-25$5.90$5.90521,100
2023-08-24$5.90$5.90331,600
2023-08-23$6.32$6.32454,400
2023-08-22$6.74$6.74348,400
2023-08-21$7.03$7.03323,500
2023-08-18$7.17$7.17203,800
2023-08-17$7.05$7.05218,900
2023-08-16$7.14$7.14239,900
2023-08-15$7.48$7.48249,700
2023-08-14$7.50$7.50253,700
2023-08-11$7.46$7.461,592,900
2023-08-10$7.63$7.63561,800
2023-08-09$7.49$7.49702,400
2023-08-08$7.42$7.42568,200
2023-08-07$7.36$7.361,329,400
2023-08-04$8.77$8.772,118,800
2023-08-03$6.63$6.63230,000
2023-08-02$6.60$6.60403,100
2023-08-01$6.91$6.91256,700
2023-07-31$6.86$6.86334,100
2023-07-28$6.37$6.37281,400
2023-07-27$6.19$6.19468,700
2023-07-26$6.26$6.26707,200
2023-07-25$6.23$6.231,853,100
2023-07-24$6.81$6.81257,400
2023-07-21$6.68$6.68455,900
2023-07-20$6.44$6.44368,600
2023-07-19$6.61$6.61478,300
2023-07-18$6.69$6.69491,100
2023-07-17$6.59$6.59344,400
2023-07-14$6.48$6.48388,400
2023-07-13$6.15$6.15361,800
2023-07-12$6.31$6.31239,300
2023-07-11$6.38$6.38324,100
2023-07-10$6.40$6.40483,700
2023-07-07$6.16$6.16391,500
2023-07-06$6.01$6.01410,800
2023-07-05$6.13$6.13564,900
2023-07-03$6.03$6.03232,000
2023-06-30$6.01$6.01553,300
2023-06-29$5.86$5.86437,100
2023-06-28$6.22$6.22600,700
2023-06-27$5.98$5.98690,800
2023-06-26$6.10$6.10601,000
2023-06-23$7.18$7.18632,600
2023-06-22$7.31$7.31474,400
2023-06-21$7.21$7.21470,600
2023-06-20$7.30$7.30443,400
2023-06-16$7.47$7.472,389,400
2023-06-15$7.62$7.62370,500
2023-06-14$7.71$7.71533,000
2023-06-13$7.69$7.69630,800
2023-06-12$7.51$7.51443,100
2023-06-09$7.28$7.28327,400
2023-06-08$7.35$7.35349,200
2023-06-07$7.62$7.62436,500
2023-06-06$7.42$7.42506,700
2023-06-05$7.19$7.19376,600
2023-06-02$7.12$7.12528,600
2023-06-01$6.83$6.83713,300
2023-05-31$7.44$7.44523,100
2023-05-30$7.34$7.34707,600
2023-05-26$7.59$7.59296,100
2023-05-25$7.37$7.37404,300
2023-05-24$7.64$7.64377,400
2023-05-23$7.75$7.75334,900
2023-05-22$7.67$7.67263,800
2023-05-19$7.59$7.59270,200
2023-05-18$7.49$7.49317,200
2023-05-17$7.62$7.62325,600
2023-05-16$7.61$7.61428,800
2023-05-15$7.93$7.93386,300
2023-05-12$7.35$7.35294,700
2023-05-11$7.36$7.36365,100
2023-05-10$7.58$7.58533,400
2023-05-09$7.91$7.91700,300
2023-05-08$7.93$7.93930,000
2023-05-05$7.41$7.41712,500
2023-05-04$6.72$6.72414,800
2023-05-03$6.56$6.56749,500
2023-05-02$6.39$6.39835,800
2023-05-01$6.68$6.68445,900
2023-04-28$6.60$6.60396,200
2023-04-27$6.45$6.45433,000
2023-04-26$6.50$6.50311,100
2023-04-25$6.47$6.47419,700
2023-04-24$6.45$6.45345,500
2023-04-21$6.65$6.65356,300
2023-04-20$6.57$6.57576,800
2023-04-19$6.54$6.54324,000
2023-04-18$6.53$6.53350,900
2023-04-17$6.77$6.77598,300
2023-04-14$6.46$6.46685,500
2023-04-13$6.59$6.59811,400
2023-04-12$6.30$6.301,052,100
2023-04-11$6.25$6.25420,000
2023-04-10$6.23$6.23779,000
2023-04-06$6.24$6.24380,300
2023-04-05$6.15$6.15735,700
2023-04-04$6.02$6.02445,400
2023-04-03$6.22$6.22332,200
2023-03-31$6.19$6.19564,500
2023-03-30$6.08$6.08418,900
2023-03-29$6.31$6.31387,600
2023-03-28$6.23$6.23272,000
2023-03-27$6.31$6.31340,200
2023-03-24$6.18$6.18935,100
2023-03-23$5.94$5.94511,100
2023-03-22$5.85$5.851,174,300
2023-03-21$6.15$6.15484,700
2023-03-20$6.39$6.39470,000
2023-03-17$6.32$6.321,939,900
2023-03-16$6.32$6.32401,000
2023-03-15$6.45$6.45480,700
2023-03-14$6.65$6.65688,600
2023-03-13$6.67$6.67554,400
2023-03-10$6.47$6.47788,700
2023-03-09$7.16$7.16736,500
2023-03-08$7.21$7.21366,600
2023-03-07$7.22$7.22508,200
2023-03-06$7.27$7.27700,600
2023-03-03$7.89$7.89490,200
2023-03-02$8.24$8.24534,000
2023-03-01$8.80$8.80400,300
2023-02-28$8.54$8.54453,800
2023-02-27$8.72$8.72503,100
2023-02-24$8.76$8.76351,500
2023-02-23$9.27$9.27245,000
2023-02-22$9.31$9.31574,400
2023-02-21$9.09$9.09594,100
2023-02-17$9.84$9.84371,800
2023-02-16$9.54$9.54439,600
2023-02-15$9.52$9.52464,300
2023-02-14$9.51$9.51255,100
2023-02-13$9.63$9.63250,300
2023-02-10$9.43$9.43551,400
2023-02-09$9.52$9.52686,700
2023-02-08$9.36$9.36519,700
2023-02-07$9.74$9.74505,400
2023-02-06$9.60$9.60330,300
2023-02-03$9.49$9.49628,600
2023-02-02$9.56$9.56717,200
2023-02-01$9.16$9.16731,400
2023-01-31$8.82$8.82468,200
2023-01-30$8.64$8.64322,600
2023-01-27$9.16$9.16363,700
2023-01-26$8.97$8.97361,400
2023-01-25$8.80$8.801,114,900
2023-01-24$8.57$8.57763,100
2023-01-23$8.44$8.44635,700
2023-01-20$8.40$8.40465,800
2023-01-19$8.39$8.39658,700
2023-01-18$8.17$8.17638,500
2023-01-17$8.36$8.36554,700
2023-01-13$8.72$8.72416,000
2023-01-12$8.70$8.70419,700
2023-01-11$8.47$8.47362,100
2023-01-10$8.32$8.32438,500
2023-01-09$8.11$8.111,254,400
2023-01-06$8.25$8.251,054,700
2023-01-05$8.76$8.76765,600
2023-01-04$9.30$9.30544,200
2023-01-03$9.10$9.10393,100