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 — 2024

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2024-12-31$1.89$1.892,320,200
2024-12-30$1.72$1.722,617,700
2024-12-27$1.78$1.78996,200
2024-12-26$1.82$1.821,444,000
2024-12-24$1.85$1.85592,700
2024-12-23$1.92$1.921,613,200
2024-12-20$1.86$1.864,460,900
2024-12-19$1.78$1.781,055,700
2024-12-18$1.78$1.781,861,600
2024-12-17$1.89$1.891,088,200
2024-12-16$1.98$1.981,135,100
2024-12-13$1.97$1.971,297,400
2024-12-12$2.04$2.041,227,300
2024-12-11$2.12$2.121,140,500
2024-12-10$2.21$2.211,101,400
2024-12-09$2.31$2.311,804,600
2024-12-06$2.16$2.162,760,300
2024-12-05$2.20$2.202,610,800
2024-12-04$2.19$2.193,440,400
2024-12-03$2.52$2.521,633,400
2024-12-02$2.51$2.512,329,300
2024-11-29$2.59$2.592,736,000
2024-11-27$2.55$2.552,866,600
2024-11-26$2.57$2.578,130,300
2024-11-25$3.96$3.962,828,900
2024-11-22$3.94$3.94715,700
2024-11-21$3.76$3.76789,700
2024-11-20$3.64$3.64537,800
2024-11-19$3.85$3.851,046,400
2024-11-18$3.76$3.761,045,300
2024-11-15$4.07$4.07811,900
2024-11-14$4.91$4.91433,000
2024-11-13$5.13$5.13616,800
2024-11-12$5.55$5.55669,400
2024-11-11$6.06$6.06753,400
2024-11-08$5.75$5.75634,600
2024-11-07$5.64$5.64793,000
2024-11-06$5.24$5.241,849,900
2024-11-05$5.00$5.00653,000
2024-11-04$5.27$5.271,649,900
2024-11-01$5.02$5.02644,000
2024-10-31$4.92$4.92556,400
2024-10-30$5.10$5.10539,500
2024-10-29$5.07$5.07330,700
2024-10-28$5.07$5.07411,700
2024-10-25$4.76$4.76432,300
2024-10-24$4.60$4.60364,400
2024-10-23$4.67$4.67210,300
2024-10-22$4.70$4.70265,400
2024-10-21$4.61$4.61455,700
2024-10-18$4.99$4.99320,500
2024-10-17$5.15$5.15406,600
2024-10-16$5.20$5.20563,800
2024-10-15$5.07$5.07370,700
2024-10-14$4.90$4.90287,500
2024-10-11$4.80$4.80345,700
2024-10-10$4.55$4.55538,300
2024-10-09$4.94$4.94844,800
2024-10-08$4.63$4.63477,900
2024-10-07$4.52$4.52422,400
2024-10-04$4.62$4.62568,800
2024-10-03$4.22$4.22533,100
2024-10-02$4.50$4.50781,000
2024-10-01$4.55$4.55547,200
2024-09-30$4.66$4.66424,900
2024-09-27$4.92$4.92480,400
2024-09-26$4.81$4.81331,600
2024-09-25$4.93$4.93589,900
2024-09-24$5.20$5.20343,300
2024-09-23$5.45$5.45615,400
2024-09-20$5.75$5.751,638,500
2024-09-19$6.14$6.14751,000
2024-09-18$5.64$5.64759,300
2024-09-17$5.64$5.64902,600
2024-09-16$5.68$5.68500,700
2024-09-13$6.03$6.03590,500
2024-09-12$5.61$5.61681,100
2024-09-11$5.81$5.81365,000
2024-09-10$5.77$5.77499,500
2024-09-09$5.27$5.27426,400
2024-09-06$4.85$4.85540,300
2024-09-05$4.52$4.52350,900
2024-09-04$4.62$4.62305,600
2024-09-03$4.72$4.72625,400
2024-08-30$5.28$5.28380,200
2024-08-29$5.22$5.22422,500
2024-08-28$5.21$5.21305,600
2024-08-27$5.29$5.29371,100
2024-08-26$5.35$5.35529,800
2024-08-23$5.31$5.31339,700
2024-08-22$5.07$5.07307,100
2024-08-21$5.29$5.29213,900
2024-08-20$5.21$5.21225,800
2024-08-19$5.24$5.24317,100
2024-08-16$5.14$5.14420,000
2024-08-15$5.26$5.26281,600
2024-08-14$4.86$4.86501,000
2024-08-13$5.07$5.07380,400
2024-08-12$5.11$5.11372,400
2024-08-09$5.08$5.08345,500
2024-08-08$5.10$5.10486,300
2024-08-07$4.91$4.91552,000
2024-08-06$5.06$5.06411,100
2024-08-05$5.06$5.06609,600
2024-08-02$5.29$5.29655,600
2024-08-01$5.72$5.72543,600
2024-07-31$6.00$6.00629,800
2024-07-30$6.26$6.26387,900
2024-07-29$6.36$6.36683,300
2024-07-26$6.49$6.49603,800
2024-07-25$6.49$6.49743,700
2024-07-24$6.33$6.33365,000
2024-07-23$6.58$6.58778,100
2024-07-22$6.37$6.371,088,700
2024-07-19$5.83$5.83708,000
2024-07-18$5.83$5.83731,400
2024-07-17$5.83$5.831,740,700
2024-07-16$6.08$6.08631,300
2024-07-15$5.73$5.73520,700
2024-07-12$5.54$5.54568,300
2024-07-11$5.41$5.41570,000
2024-07-10$5.02$5.02330,700
2024-07-09$4.77$4.77357,600
2024-07-08$4.61$4.61423,000
2024-07-05$4.39$4.39231,300
2024-07-03$4.41$4.41214,100
2024-07-02$4.34$4.34317,000
2024-07-01$4.42$4.42453,100
2024-06-28$4.54$4.542,044,400
2024-06-27$4.54$4.54467,500
2024-06-26$4.32$4.32477,200
2024-06-25$4.36$4.36652,500
2024-06-24$4.59$4.59454,300
2024-06-21$4.57$4.572,599,100
2024-06-20$4.19$4.19609,200
2024-06-18$4.26$4.26494,500
2024-06-17$4.57$4.57853,200
2024-06-14$4.68$4.68546,800
2024-06-13$4.93$4.93674,500
2024-06-12$4.70$4.70556,600
2024-06-11$4.42$4.42534,400
2024-06-10$4.42$4.421,102,300
2024-06-07$4.36$4.36675,600
2024-06-06$4.37$4.37824,800
2024-06-05$4.80$4.80667,000
2024-06-04$4.77$4.77608,300
2024-06-03$5.03$5.032,700,200
2024-05-31$4.92$4.92493,000
2024-05-30$4.92$4.92508,500
2024-05-29$5.00$5.00696,800
2024-05-28$5.13$5.13481,100
2024-05-24$4.99$4.99260,000
2024-05-23$5.26$5.26700,400
2024-05-22$5.44$5.44732,800
2024-05-21$5.39$5.39667,200
2024-05-20$5.41$5.41614,200
2024-05-17$5.44$5.44544,600
2024-05-16$5.49$5.49477,100
2024-05-15$5.65$5.65502,300
2024-05-14$5.33$5.33358,500
2024-05-13$5.39$5.39449,400
2024-05-10$5.25$5.25456,800
2024-05-09$5.20$5.20592,100
2024-05-08$5.19$5.19325,500
2024-05-07$5.30$5.30279,900
2024-05-06$5.32$5.32247,500
2024-05-03$5.39$5.39306,300
2024-05-02$5.34$5.34443,100
2024-05-01$5.28$5.28818,700
2024-04-30$5.08$5.08435,600
2024-04-29$5.26$5.26346,500
2024-04-26$5.25$5.25457,400
2024-04-25$4.81$4.81505,600
2024-04-24$5.25$5.25401,100
2024-04-23$5.34$5.34546,500
2024-04-22$5.17$5.17353,200
2024-04-19$5.09$5.09473,700
2024-04-18$5.09$5.09413,000
2024-04-17$5.07$5.07561,500
2024-04-16$5.31$5.31353,200
2024-04-15$5.64$5.64375,100
2024-04-12$6.02$6.02835,900
2024-04-11$6.23$6.23791,900
2024-04-10$5.85$5.852,521,700
2024-04-09$6.05$6.05488,200
2024-04-08$5.81$5.81748,900
2024-04-05$5.84$5.84425,700
2024-04-04$5.76$5.76463,000
2024-04-03$5.89$5.89481,900
2024-04-02$5.82$5.82513,300
2024-04-01$6.16$6.16441,300
2024-03-28$6.02$6.02406,600
2024-03-27$6.08$6.08285,300
2024-03-26$5.96$5.96371,900
2024-03-25$5.97$5.97334,600
2024-03-22$5.98$5.98337,700
2024-03-21$6.23$6.23553,500
2024-03-20$6.22$6.22412,000
2024-03-19$6.20$6.20658,900
2024-03-18$6.00$6.00705,900
2024-03-15$6.12$6.122,532,400
2024-03-14$6.05$6.05581,200
2024-03-13$6.21$6.21848,300
2024-03-12$5.89$5.89692,700
2024-03-11$6.42$6.42511,100
2024-03-08$6.64$6.64570,500
2024-03-07$6.58$6.58550,800
2024-03-06$6.85$6.85507,000
2024-03-05$6.74$6.74423,800
2024-03-04$6.98$6.98703,500
2024-03-01$7.41$7.411,639,600
2024-02-29$6.97$6.97719,000
2024-02-28$6.99$6.99944,600
2024-02-27$7.01$7.01726,500
2024-02-26$6.48$6.48458,200
2024-02-23$6.41$6.411,086,900
2024-02-22$6.47$6.47650,100
2024-02-21$6.21$6.21395,900
2024-02-20$6.34$6.34460,300
2024-02-16$6.37$6.37419,000
2024-02-15$6.49$6.49574,400
2024-02-14$6.27$6.27368,300
2024-02-13$6.04$6.04578,500
2024-02-12$6.52$6.52653,000
2024-02-09$6.45$6.45394,300
2024-02-08$6.25$6.25600,600
2024-02-07$6.40$6.401,458,100
2024-02-06$6.04$6.04842,500
2024-02-05$5.99$5.99807,700
2024-02-02$5.83$5.83999,100
2024-02-01$6.11$6.11696,700
2024-01-31$5.96$5.961,577,900
2024-01-30$5.69$5.691,325,300
2024-01-29$6.20$6.20487,300
2024-01-26$6.04$6.04353,300
2024-01-25$6.07$6.07482,600
2024-01-24$6.15$6.15481,100
2024-01-23$6.14$6.14760,300
2024-01-22$5.95$5.95766,500
2024-01-19$5.88$5.88885,500
2024-01-18$5.77$5.771,064,300
2024-01-17$6.57$6.571,827,800
2024-01-16$7.64$7.64338,000
2024-01-12$7.78$7.78279,500
2024-01-11$7.61$7.61947,600
2024-01-10$7.94$7.94469,000
2024-01-09$8.08$8.081,035,900
2024-01-08$8.04$8.04438,600
2024-01-05$7.49$7.49374,000
2024-01-04$7.98$7.98276,700
2024-01-03$7.69$7.69385,600
2024-01-02$7.99$7.99704,500