NASDAQ:ALNY | Historical Stock Price | ALNYLAM PHARMACEUTICALS, 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
2004-06-01 to 2026-09-04
Data captured

Stock Price Chart

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

$4.09$10.71$28.07$73.59$192.93$505.752004-06-012026-08-27

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

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Historical Stock Price — 2012

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2012-12-31$18.25$18.25199,200——
2012-12-28$17.66$17.6684,700——
2012-12-27$17.74$17.74160,000——
2012-12-26$17.68$17.68119,200——
2012-12-24$18.40$18.4070,800——
2012-12-21$18.07$18.07755,400——
2012-12-20$18.66$18.66235,400——
2012-12-19$18.34$18.34208,000——
2012-12-18$18.40$18.40324,200——
2012-12-17$18.56$18.56181,900——
2012-12-14$18.54$18.54159,000——
2012-12-13$18.44$18.44223,600——
2012-12-12$18.60$18.60648,600——
2012-12-11$17.99$17.99266,200——
2012-12-10$17.60$17.60248,600——
2012-12-07$16.65$16.6592,000——
2012-12-06$16.62$16.6287,100——
2012-12-05$16.35$16.35169,400——
2012-12-04$16.43$16.43120,000——
2012-12-03$16.51$16.51216,700——
2012-11-30$16.97$16.97204,500——
2012-11-29$17.10$17.10153,000——
2012-11-28$16.40$16.40144,700——
2012-11-27$15.93$15.93122,100——
2012-11-26$16.25$16.25159,100——
2012-11-23$16.47$16.4760,000——
2012-11-21$16.42$16.42130,200——
2012-11-20$16.63$16.63288,800——
2012-11-19$16.11$16.11368,600——
2012-11-16$16.00$16.00350,300——
2012-11-15$15.30$15.30647,700——
2012-11-14$15.80$15.80502,200——
2012-11-13$16.94$16.94595,300——
2012-11-12$16.12$16.12213,800——
2012-11-09$15.42$15.42487,300——
2012-11-08$15.22$15.22479,300——
2012-11-07$16.18$16.18190,000——
2012-11-06$16.21$16.21272,700——
2012-11-05$16.73$16.73153,200——
2012-11-02$16.09$16.09280,400——
2012-11-01$16.95$16.95219,600——
2012-10-31$16.17$16.17154,200——
2012-10-26$16.39$16.39141,100——
2012-10-25$16.82$16.82262,500——
2012-10-24$17.07$17.07242,000——
2012-10-23$17.10$17.10180,100——
2012-10-22$17.06$17.06263,900——
2012-10-19$17.32$17.32300,300——
2012-10-18$17.83$17.83108,100——
2012-10-17$18.49$18.49134,400——
2012-10-16$18.07$18.07180,700——
2012-10-15$18.47$18.47123,100——
2012-10-12$18.41$18.41231,500——
2012-10-11$18.73$18.73221,100——
2012-10-10$17.70$17.70204,500——
2012-10-09$17.94$17.94175,900——
2012-10-08$18.94$18.94134,400——
2012-10-05$19.04$19.04117,600——
2012-10-04$18.77$18.77121,800——
2012-10-03$18.91$18.91155,200——
2012-10-02$18.87$18.87161,200——
2012-10-01$18.85$18.85241,800——
2012-09-28$18.79$18.79192,800——
2012-09-27$19.20$19.20217,200——
2012-09-26$18.95$18.95408,400——
2012-09-25$19.38$19.38311,400——
2012-09-24$19.64$19.64228,100——
2012-09-21$19.61$19.611,092,700——
2012-09-20$20.23$20.23302,900——
2012-09-19$19.82$19.82680,300——
2012-09-18$20.70$20.70175,400——
2012-09-17$20.99$20.99594,200——
2012-09-14$20.87$20.87427,600——
2012-09-13$20.19$20.19627,400——
2012-09-12$19.75$19.75642,400——
2012-09-11$18.81$18.81387,400——
2012-09-10$18.65$18.65350,200——
2012-09-07$18.93$18.93443,400——
2012-09-06$18.37$18.37370,400——
2012-09-05$18.27$18.27242,600——
2012-09-04$18.50$18.50260,200——
2012-08-31$18.29$18.29173,900——
2012-08-30$18.44$18.44345,100——
2012-08-29$18.45$18.45324,000——
2012-08-28$18.18$18.18460,500——
2012-08-27$17.74$17.7484,300——
2012-08-24$17.74$17.74140,800——
2012-08-23$17.56$17.56154,900——
2012-08-22$17.85$17.85259,500——
2012-08-21$17.94$17.94244,800——
2012-08-20$17.60$17.60269,000——
2012-08-17$17.55$17.55293,800——
2012-08-16$17.75$17.75241,700——
2012-08-15$17.67$17.67321,900——
2012-08-14$17.00$17.00279,500——
2012-08-13$17.14$17.14527,900——
2012-08-10$17.26$17.26590,400——
2012-08-09$17.91$17.91306,700——
2012-08-08$17.87$17.87448,900——
2012-08-07$18.18$18.18954,800——
2012-08-06$18.44$18.44442,700——
2012-08-03$18.03$18.03575,100——
2012-08-02$17.40$17.40734,700——
2012-08-01$18.10$18.10446,200——
2012-07-31$18.69$18.69873,100——
2012-07-30$19.11$19.11724,500——
2012-07-27$20.22$20.22515,100——
2012-07-26$18.96$18.96610,600——
2012-07-25$18.77$18.77194,800——
2012-07-24$18.47$18.47418,600——
2012-07-23$18.66$18.66363,800——
2012-07-20$18.74$18.74563,900——
2012-07-19$18.76$18.761,253,500——
2012-07-18$18.72$18.72901,400——
2012-07-17$18.64$18.644,003,600——
2012-07-16$19.16$19.169,609,400——
2012-07-13$12.52$12.52221,400——
2012-07-12$12.43$12.43312,900——
2012-07-11$12.30$12.30486,900——
2012-07-10$13.12$13.12267,500——
2012-07-09$12.94$12.94182,000——
2012-07-06$12.87$12.87120,000——
2012-07-05$12.81$12.81208,600——
2012-07-03$12.57$12.57124,100——
2012-07-02$12.13$12.13250,300——
2012-06-29$11.65$11.65186,500——
2012-06-28$11.49$11.49201,800——
2012-06-27$12.01$12.01136,300——
2012-06-26$11.87$11.87241,900——
2012-06-25$11.64$11.64138,200——
2012-06-22$11.76$11.76374,300——
2012-06-21$11.33$11.33207,500——
2012-06-20$11.66$11.66176,100——
2012-06-19$11.73$11.73251,000——
2012-06-18$11.75$11.75305,100——
2012-06-15$11.58$11.58516,900——
2012-06-14$11.63$11.63192,700——
2012-06-13$11.43$11.43450,100——
2012-06-12$11.54$11.54357,300——
2012-06-11$11.03$11.03286,500——
2012-06-08$11.35$11.35215,700——
2012-06-07$11.00$11.00314,000——
2012-06-06$11.05$11.05240,600——
2012-06-05$10.66$10.66336,500——
2012-06-04$10.42$10.42189,500——
2012-06-01$10.09$10.09400,000——
2012-05-31$10.24$10.24389,900——
2012-05-30$10.04$10.04692,500——
2012-05-29$10.13$10.13329,200——
2012-05-25$10.43$10.43108,200——
2012-05-24$10.43$10.43124,200——
2012-05-23$10.30$10.30219,000——
2012-05-22$10.06$10.06311,400——
2012-05-21$10.07$10.07329,200——
2012-05-18$9.91$9.91490,000——
2012-05-17$10.00$10.00243,000——
2012-05-16$10.29$10.29213,000——
2012-05-15$10.47$10.47200,300——
2012-05-14$10.61$10.61196,000——
2012-05-11$10.69$10.69266,200——
2012-05-10$10.70$10.70337,000——
2012-05-09$10.60$10.60279,300——
2012-05-08$10.61$10.61597,700——
2012-05-07$9.97$9.97356,700——
2012-05-04$9.78$9.78366,200——
2012-05-03$10.29$10.29321,400——
2012-05-02$10.75$10.75379,200——
2012-05-01$11.17$11.17300,000——
2012-04-30$11.39$11.39283,500——
2012-04-27$11.67$11.67204,000——
2012-04-26$11.63$11.63394,900——
2012-04-25$11.55$11.55495,400——
2012-04-24$11.19$11.19380,500——
2012-04-23$10.66$10.66327,600——
2012-04-20$10.62$10.62347,200——
2012-04-19$10.00$10.00173,000——
2012-04-18$10.00$10.00116,100——
2012-04-17$10.14$10.14244,900——
2012-04-16$10.01$10.01505,600——
2012-04-13$10.02$10.02363,700——
2012-04-12$10.33$10.33209,000——
2012-04-11$10.28$10.28209,500——
2012-04-10$10.00$10.00553,800——
2012-04-09$10.29$10.29684,800——
2012-04-05$10.64$10.64282,100——
2012-04-04$10.36$10.36489,400——
2012-04-03$10.82$10.82209,900——
2012-04-02$11.10$11.10508,300——
2012-03-30$11.07$11.07370,400——
2012-03-29$11.27$11.27172,200——
2012-03-28$11.35$11.35213,200——
2012-03-27$11.33$11.33320,900——
2012-03-26$11.39$11.39520,800——
2012-03-23$11.34$11.34240,700——
2012-03-22$11.30$11.30299,200——
2012-03-21$11.45$11.45166,200——
2012-03-20$11.58$11.58241,400——
2012-03-19$12.09$12.09278,000——
2012-03-16$11.59$11.591,312,700——
2012-03-15$12.00$12.00234,800——
2012-03-14$11.79$11.79158,100——
2012-03-13$12.00$12.00240,500——
2012-03-12$11.95$11.95273,600——
2012-03-09$12.18$12.18259,600——
2012-03-08$12.14$12.14209,600——
2012-03-07$12.02$12.02486,900——
2012-03-06$11.68$11.68439,800——
2012-03-05$12.65$12.65549,900——
2012-03-02$12.51$12.51534,500——
2012-03-01$13.64$13.64467,100——
2012-02-29$13.34$13.341,369,700——
2012-02-28$13.52$13.52738,500——
2012-02-27$13.58$13.58573,800——
2012-02-24$13.42$13.42848,300——
2012-02-23$12.76$12.76507,900——
2012-02-22$11.95$11.95414,800——
2012-02-21$11.98$11.98709,300——
2012-02-17$12.20$12.20420,900——
2012-02-16$12.61$12.61622,000——
2012-02-15$12.55$12.553,779,800——
2012-02-14$10.98$10.981,115,000——
2012-02-13$12.39$12.39405,300——
2012-02-10$12.15$12.15724,400——
2012-02-09$13.05$13.05342,600——
2012-02-08$13.05$13.05569,500——
2012-02-07$12.95$12.95480,700——
2012-02-06$13.13$13.13313,700——
2012-02-03$13.01$13.01701,500——
2012-02-02$12.60$12.60635,000——
2012-02-01$12.08$12.08650,100——
2012-01-31$11.56$11.56421,900——
2012-01-30$11.16$11.16226,000——
2012-01-27$10.91$10.91422,600——
2012-01-26$10.80$10.80375,100——
2012-01-25$10.89$10.89207,400——
2012-01-24$10.70$10.70297,200——
2012-01-23$10.50$10.50241,900——
2012-01-20$10.34$10.34473,300——
2012-01-19$10.26$10.26296,800——
2012-01-18$10.30$10.30405,900——
2012-01-17$10.47$10.47534,400——
2012-01-13$9.88$9.88336,800——
2012-01-12$10.08$10.081,061,400——
2012-01-11$9.26$9.26404,700——
2012-01-10$9.00$9.00298,800——
2012-01-09$8.85$8.85171,500——
2012-01-06$8.67$8.67216,600——
2012-01-05$8.65$8.65230,900——
2012-01-04$8.65$8.65241,100——
2012-01-03$8.66$8.66357,800——