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 — 2022

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2022-12-30$9.23$9.23506,900
2022-12-29$9.48$9.48474,000
2022-12-28$8.81$8.81532,400
2022-12-27$8.90$8.90418,800
2022-12-23$8.84$8.84505,700
2022-12-22$8.85$8.85402,100
2022-12-21$8.79$8.79415,700
2022-12-20$8.95$8.95669,500
2022-12-19$8.84$8.84531,900
2022-12-16$9.07$9.071,087,100
2022-12-15$8.84$8.84654,700
2022-12-14$9.38$9.38603,900
2022-12-13$9.21$9.21563,800
2022-12-12$9.07$9.07431,700
2022-12-09$8.64$8.64440,100
2022-12-08$8.69$8.69339,200
2022-12-07$9.09$9.09770,000
2022-12-06$9.27$9.27700,800
2022-12-05$8.66$8.66800,500
2022-12-02$9.10$9.10576,700
2022-12-01$8.44$8.44746,100
2022-11-30$8.49$8.49928,500
2022-11-29$7.52$7.52328,600
2022-11-28$7.49$7.49398,200
2022-11-25$7.75$7.7584,400
2022-11-23$7.77$7.77336,100
2022-11-22$7.85$7.85412,100
2022-11-21$7.62$7.62412,200
2022-11-18$7.77$7.77408,900
2022-11-17$7.86$7.86674,700
2022-11-16$8.49$8.49560,800
2022-11-15$8.65$8.65645,400
2022-11-14$8.57$8.57872,100
2022-11-11$8.69$8.69600,900
2022-11-10$8.23$8.231,395,100
2022-11-09$6.88$6.88897,300
2022-11-08$8.58$8.58458,900
2022-11-07$8.43$8.43379,500
2022-11-04$8.28$8.28691,900
2022-11-03$8.61$8.61558,300
2022-11-02$9.02$9.02416,100
2022-11-01$9.29$9.29378,300
2022-10-31$9.20$9.20451,200
2022-10-28$9.52$9.52596,500
2022-10-27$8.97$8.97338,500
2022-10-26$9.11$9.11337,900
2022-10-25$9.03$9.03457,800
2022-10-24$8.74$8.74455,700
2022-10-21$8.88$8.88435,700
2022-10-20$8.75$8.75352,000
2022-10-19$8.90$8.90606,500
2022-10-18$9.20$9.20305,900
2022-10-17$9.31$9.31729,100
2022-10-14$8.54$8.54333,400
2022-10-13$8.91$8.91274,200
2022-10-12$8.88$8.88490,300
2022-10-11$8.99$8.99526,800
2022-10-10$8.61$8.61370,900
2022-10-07$8.68$8.68473,700
2022-10-06$9.13$9.13401,000
2022-10-05$9.24$9.24455,300
2022-10-04$9.55$9.55531,600
2022-10-03$9.32$9.32515,100
2022-09-30$9.46$9.46526,700
2022-09-29$9.45$9.45714,600
2022-09-28$9.49$9.49868,900
2022-09-27$8.49$8.49614,100
2022-09-26$8.19$8.19394,300
2022-09-23$8.43$8.43687,100
2022-09-22$8.79$8.79348,700
2022-09-21$8.92$8.92418,500
2022-09-20$9.27$9.27694,900
2022-09-19$9.37$9.37666,300
2022-09-16$9.23$9.231,465,600
2022-09-15$9.81$9.81402,600
2022-09-14$9.68$9.68747,800
2022-09-13$9.24$9.24823,400
2022-09-12$10.17$10.17993,700
2022-09-09$9.63$9.63903,200
2022-09-08$10.99$10.99407,400
2022-09-07$10.72$10.72600,800
2022-09-06$9.90$9.90559,800
2022-09-02$10.46$10.46406,400
2022-09-01$10.77$10.77530,300
2022-08-31$10.35$10.35476,600
2022-08-30$10.60$10.60454,800
2022-08-29$10.61$10.61363,000
2022-08-26$10.82$10.82458,500
2022-08-25$11.55$11.55318,800
2022-08-24$11.53$11.53305,500
2022-08-23$11.43$11.43382,800
2022-08-22$11.31$11.31321,700
2022-08-19$11.61$11.61297,900
2022-08-18$11.88$11.88427,900
2022-08-17$11.83$11.83472,400
2022-08-16$12.27$12.27489,800
2022-08-15$12.89$12.89563,600
2022-08-12$13.20$13.20893,600
2022-08-11$12.66$12.66650,000
2022-08-10$13.00$13.00422,300
2022-08-09$12.66$12.66539,300
2022-08-08$13.12$13.12619,900
2022-08-05$13.06$13.06818,500
2022-08-04$11.33$11.33441,200
2022-08-03$11.23$11.23569,700
2022-08-02$10.50$10.50422,600
2022-08-01$10.17$10.17424,500
2022-07-29$10.22$10.22379,800
2022-07-28$10.65$10.65286,400
2022-07-27$11.04$11.04483,800
2022-07-26$10.72$10.72440,400
2022-07-25$10.65$10.65282,700
2022-07-22$10.95$10.95459,800
2022-07-21$11.44$11.44259,500
2022-07-20$11.57$11.57400,600
2022-07-19$11.38$11.38457,300
2022-07-18$10.72$10.72364,400
2022-07-15$11.06$11.06304,200
2022-07-14$11.06$11.06360,200
2022-07-13$11.63$11.63454,400
2022-07-12$11.26$11.26651,700
2022-07-11$10.53$10.53617,900
2022-07-08$11.37$11.37413,600
2022-07-07$11.49$11.49475,700
2022-07-06$11.56$11.56493,400
2022-07-05$11.64$11.64658,600
2022-07-01$11.02$11.02641,800
2022-06-30$10.16$10.16456,000
2022-06-29$10.21$10.21301,200
2022-06-28$10.11$10.11611,500
2022-06-27$10.74$10.74488,000
2022-06-24$10.73$10.731,173,000
2022-06-23$10.52$10.52682,900
2022-06-22$9.70$9.70573,800
2022-06-21$9.13$9.13579,900
2022-06-17$8.53$8.531,267,300
2022-06-16$8.07$8.07745,600
2022-06-15$8.43$8.43717,700
2022-06-14$8.04$8.04638,100
2022-06-13$7.82$7.82694,400
2022-06-10$8.38$8.38599,700
2022-06-09$9.24$9.24506,600
2022-06-08$9.45$9.45549,500
2022-06-07$9.32$9.32845,200
2022-06-06$8.81$8.81582,500
2022-06-03$8.99$8.99705,200
2022-06-02$8.71$8.71441,800
2022-06-01$8.68$8.68480,100
2022-05-31$8.86$8.86695,600
2022-05-27$9.20$9.20505,200
2022-05-26$8.89$8.89362,900
2022-05-25$8.86$8.86604,200
2022-05-24$8.79$8.79819,000
2022-05-23$9.24$9.24542,200
2022-05-20$9.32$9.32694,800
2022-05-19$8.98$8.98677,400
2022-05-18$8.77$8.771,139,300
2022-05-17$9.11$9.11502,400
2022-05-16$8.63$8.63479,300
2022-05-13$8.62$8.62759,300
2022-05-12$8.19$8.191,480,200
2022-05-11$7.65$7.65860,800
2022-05-10$8.16$8.161,078,600
2022-05-09$7.94$7.941,002,300
2022-05-06$8.90$8.90829,700
2022-05-05$9.52$9.52704,900
2022-05-04$10.20$10.201,059,400
2022-05-03$10.09$10.09436,800
2022-05-02$10.08$10.08710,300
2022-04-29$9.60$9.60535,900
2022-04-28$10.10$10.10819,300
2022-04-27$10.05$10.05740,200
2022-04-26$10.00$10.00649,300
2022-04-25$10.62$10.62609,600
2022-04-22$10.49$10.49693,400
2022-04-21$10.74$10.74850,800
2022-04-20$11.30$11.30369,000
2022-04-19$11.35$11.35579,600
2022-04-18$11.00$11.00680,300
2022-04-14$11.47$11.47480,000
2022-04-13$12.32$12.32729,400
2022-04-12$12.49$12.49506,200
2022-04-11$12.28$12.28501,800
2022-04-08$13.13$13.13338,700
2022-04-07$13.44$13.44610,600
2022-04-06$14.07$14.07786,000
2022-04-05$13.86$13.86896,100
2022-04-04$14.24$14.241,181,300
2022-04-01$14.07$14.071,635,200
2022-03-31$14.25$14.25529,000
2022-03-30$14.50$14.50375,300
2022-03-29$15.07$15.07498,900
2022-03-28$14.49$14.49418,800
2022-03-25$14.48$14.48371,700
2022-03-24$15.18$15.18347,000
2022-03-23$14.61$14.61296,000
2022-03-22$15.20$15.20558,600
2022-03-21$14.67$14.67526,400
2022-03-18$15.54$15.541,053,500
2022-03-17$14.63$14.63874,500
2022-03-16$14.01$14.01864,000
2022-03-15$13.02$13.02666,500
2022-03-14$13.51$13.511,031,000
2022-03-11$13.99$13.99593,100
2022-03-10$14.73$14.731,040,900
2022-03-09$15.08$15.081,338,100
2022-03-08$13.41$13.411,598,300
2022-03-07$14.85$14.85536,600
2022-03-04$14.84$14.84325,400
2022-03-03$15.16$15.16492,100
2022-03-02$15.29$15.29449,200
2022-03-01$15.49$15.49539,500
2022-02-28$15.84$15.84561,500
2022-02-25$16.00$16.00684,000
2022-02-24$16.15$16.15621,200
2022-02-23$15.70$15.70497,300
2022-02-22$16.25$16.25384,300
2022-02-18$16.36$16.36529,700
2022-02-17$16.09$16.091,097,100
2022-02-16$16.90$16.90740,800
2022-02-15$17.19$17.19413,000
2022-02-14$16.11$16.11451,500
2022-02-11$16.29$16.29390,900
2022-02-10$16.67$16.67592,300
2022-02-09$17.17$17.17508,500
2022-02-08$16.32$16.32501,000
2022-02-07$16.33$16.33537,500
2022-02-04$15.71$15.71768,400
2022-02-03$14.95$14.951,028,000
2022-02-02$15.44$15.441,603,100
2022-02-01$15.32$15.321,975,600
2022-01-31$15.86$15.861,438,500
2022-01-28$14.68$14.681,639,300
2022-01-27$14.10$14.101,014,600
2022-01-26$14.94$14.94877,200
2022-01-25$15.27$15.271,136,800
2022-01-24$15.92$15.92642,200
2022-01-21$15.54$15.54557,400
2022-01-20$15.73$15.73796,600
2022-01-19$16.17$16.17539,900
2022-01-18$16.03$16.03538,100
2022-01-14$17.51$17.51474,200
2022-01-13$17.07$17.07690,600
2022-01-12$17.48$17.48769,900
2022-01-11$18.46$18.461,611,300
2022-01-10$17.54$17.54527,800
2022-01-07$17.91$17.91540,500
2022-01-06$18.49$18.49606,700
2022-01-05$18.45$18.45776,900
2022-01-04$19.92$19.92514,500
2022-01-03$20.78$20.78739,600