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.

View year

Historical Stock Price — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$24.73$24.73253,300
2008-12-30$23.91$23.91128,300
2008-12-29$23.10$23.10165,200
2008-12-26$23.89$23.89119,500
2008-12-24$24.03$24.03157,000
2008-12-23$23.92$23.92368,300
2008-12-22$24.02$24.02355,200
2008-12-19$24.83$24.83602,300
2008-12-18$23.53$23.53352,700
2008-12-17$23.29$23.29356,500
2008-12-16$22.97$22.97513,800
2008-12-15$22.40$22.40413,500
2008-12-12$22.11$22.11273,700
2008-12-11$20.99$20.99387,200
2008-12-10$21.37$21.37240,600
2008-12-09$21.35$21.35567,400
2008-12-08$21.25$21.25583,900
2008-12-05$19.20$19.20449,800
2008-12-04$17.89$17.89395,300
2008-12-03$17.59$17.59467,100
2008-12-02$17.29$17.29591,600
2008-12-01$17.46$17.46446,200
2008-11-28$18.23$18.23161,600
2008-11-26$18.58$18.58319,700
2008-11-25$18.25$18.25430,600
2008-11-24$18.33$18.33541,400
2008-11-21$17.97$17.97866,300
2008-11-20$18.16$18.16691,200
2008-11-19$20.11$20.11475,900
2008-11-18$21.70$21.70451,300
2008-11-17$23.21$23.21386,700
2008-11-14$23.16$23.16443,900
2008-11-13$26.07$26.07570,400
2008-11-12$23.87$23.87596,800
2008-11-11$26.82$26.82198,600
2008-11-10$26.84$26.84230,100
2008-11-07$26.62$26.62431,700
2008-11-06$25.97$25.97374,700
2008-11-05$26.22$26.22514,900
2008-11-04$26.76$26.76668,800
2008-11-03$24.14$24.14312,500
2008-10-31$23.00$23.00364,700
2008-10-30$21.91$21.91339,600
2008-10-29$19.77$19.77406,800
2008-10-28$20.16$20.16515,400
2008-10-27$18.45$18.45547,300
2008-10-24$21.17$21.17434,800
2008-10-23$23.01$23.01408,700
2008-10-22$22.62$22.62384,600
2008-10-21$22.75$22.75362,100
2008-10-20$24.28$24.28323,000
2008-10-17$23.26$23.26539,800
2008-10-16$24.24$24.24641,400
2008-10-15$22.26$22.26568,300
2008-10-14$24.54$24.54506,000
2008-10-13$25.51$25.51523,100
2008-10-10$23.79$23.79928,900
2008-10-09$22.25$22.25461,700
2008-10-08$23.62$23.62834,600
2008-10-07$22.80$22.80781,500
2008-10-06$23.76$23.76820,900
2008-10-03$25.69$25.69466,800
2008-10-02$26.49$26.49315,600
2008-10-01$27.72$27.72348,200
2008-09-30$28.95$28.95419,200
2008-09-29$30.25$30.25566,200
2008-09-26$30.23$30.23356,700
2008-09-25$30.19$30.19280,800
2008-09-24$29.35$29.35304,200
2008-09-23$29.57$29.57344,900
2008-09-22$29.41$29.41335,400
2008-09-19$30.48$30.481,609,900
2008-09-18$28.14$28.141,040,600
2008-09-17$25.12$25.12806,000
2008-09-16$27.75$27.75455,800
2008-09-15$27.85$27.85445,500
2008-09-12$28.62$28.62283,600
2008-09-11$28.27$28.27421,000
2008-09-10$28.25$28.25345,200
2008-09-09$27.53$27.53403,300
2008-09-08$28.07$28.07312,600
2008-09-05$27.77$27.77576,400
2008-09-04$28.05$28.05403,400
2008-09-03$29.43$29.43392,300
2008-09-02$29.77$29.77468,100
2008-08-29$29.65$29.65214,200
2008-08-28$29.79$29.79498,800
2008-08-27$29.30$29.30666,400
2008-08-26$29.63$29.63393,400
2008-08-25$29.56$29.56411,300
2008-08-22$29.88$29.88320,800
2008-08-21$29.64$29.64975,500
2008-08-20$30.87$30.87931,200
2008-08-19$32.95$32.95389,200
2008-08-18$34.10$34.10371,800
2008-08-15$34.73$34.73369,700
2008-08-14$34.46$34.46479,300
2008-08-13$33.92$33.92466,200
2008-08-12$34.19$34.19420,900
2008-08-11$34.49$34.49395,300
2008-08-08$34.80$34.801,083,800
2008-08-07$34.22$34.221,060,300
2008-08-06$35.95$35.95484,800
2008-08-05$35.67$35.67649,000
2008-08-04$34.81$34.81560,800
2008-08-01$35.38$35.38690,500
2008-07-31$34.78$34.781,307,500
2008-07-30$33.07$33.07706,200
2008-07-29$31.46$31.46398,000
2008-07-28$30.98$30.98548,700
2008-07-25$32.02$32.02571,300
2008-07-24$31.45$31.45333,600
2008-07-23$31.50$31.50381,500
2008-07-22$31.90$31.90537,400
2008-07-21$31.71$31.71424,900
2008-07-18$31.35$31.35529,100
2008-07-17$31.85$31.851,125,900
2008-07-16$29.44$29.44502,700
2008-07-15$28.85$28.85359,200
2008-07-14$27.87$27.87377,800
2008-07-11$28.96$28.96750,500
2008-07-10$29.33$29.33452,600
2008-07-09$28.75$28.75569,800
2008-07-08$28.92$28.92695,000
2008-07-07$28.18$28.18634,700
2008-07-03$28.59$28.59429,500
2008-07-02$28.77$28.77927,100
2008-07-01$27.18$27.18502,100
2008-06-30$26.73$26.73389,300
2008-06-27$26.33$26.33594,300
2008-06-26$26.34$26.34462,200
2008-06-25$26.73$26.73364,800
2008-06-24$25.55$25.55413,600
2008-06-23$25.61$25.61326,100
2008-06-20$25.95$25.95670,100
2008-06-19$26.22$26.22438,600
2008-06-18$26.00$26.00275,400
2008-06-17$26.28$26.28481,200
2008-06-16$26.65$26.65172,300
2008-06-13$27.02$27.02164,800
2008-06-12$26.10$26.10248,100
2008-06-11$26.04$26.04274,700
2008-06-10$26.35$26.35322,200
2008-06-09$26.71$26.71765,200
2008-06-06$27.98$27.98276,000
2008-06-05$28.75$28.75425,700
2008-06-04$27.69$27.69364,400
2008-06-03$27.28$27.28821,200
2008-06-02$28.24$28.24644,900
2008-05-30$28.88$28.88419,800
2008-05-29$28.97$28.97526,400
2008-05-28$28.27$28.27835,000
2008-05-27$28.45$28.451,696,900
2008-05-23$29.45$29.45603,500
2008-05-22$29.40$29.40494,300
2008-05-21$28.99$28.99611,200
2008-05-20$29.51$29.51554,500
2008-05-19$29.40$29.40457,500
2008-05-16$29.15$29.15410,000
2008-05-15$29.51$29.51255,200
2008-05-14$29.39$29.39388,000
2008-05-13$29.74$29.74591,100
2008-05-12$28.53$28.53372,800
2008-05-09$27.67$27.671,142,600
2008-05-08$25.39$25.39285,500
2008-05-07$24.84$24.84320,600
2008-05-06$25.68$25.68155,600
2008-05-05$25.35$25.35337,200
2008-05-02$26.40$26.40214,200
2008-05-01$26.50$26.50335,900
2008-04-30$25.08$25.08179,600
2008-04-29$25.68$25.68153,600
2008-04-28$25.91$25.91237,800
2008-04-25$25.04$25.04385,600
2008-04-24$25.74$25.74565,400
2008-04-23$25.56$25.56492,800
2008-04-22$24.20$24.20423,500
2008-04-21$24.91$24.91249,900
2008-04-18$24.47$24.47347,300
2008-04-17$24.14$24.14535,800
2008-04-16$24.40$24.40661,500
2008-04-15$22.95$22.95374,700
2008-04-14$22.89$22.89491,500
2008-04-11$23.07$23.07473,000
2008-04-10$24.53$24.53580,400
2008-04-09$23.33$23.33289,400
2008-04-08$23.68$23.68494,200
2008-04-07$24.11$24.11256,100
2008-04-04$24.18$24.18831,800
2008-04-03$24.71$24.71654,600
2008-04-02$25.18$25.18606,000
2008-04-01$24.90$24.901,406,400
2008-03-31$24.40$24.40606,000
2008-03-28$24.21$24.21669,100
2008-03-27$25.51$25.51927,200
2008-03-26$26.66$26.66490,300
2008-03-25$26.02$26.02460,900
2008-03-24$26.24$26.24726,500
2008-03-20$24.03$24.031,397,300
2008-03-19$23.73$23.73501,600
2008-03-18$24.68$24.68653,800
2008-03-17$22.86$22.86806,900
2008-03-14$25.07$25.07774,300
2008-03-13$25.62$25.62773,400
2008-03-12$24.54$24.541,061,400
2008-03-11$23.25$23.251,221,000
2008-03-10$22.53$22.531,359,600
2008-03-07$24.17$24.171,661,100
2008-03-06$25.60$25.601,125,000
2008-03-05$27.44$27.44582,200
2008-03-04$27.76$27.761,005,200
2008-03-03$27.57$27.571,058,800
2008-02-29$28.40$28.402,212,600
2008-02-28$29.92$29.92486,700
2008-02-27$30.11$30.11336,200
2008-02-26$30.59$30.59331,000
2008-02-25$30.52$30.52405,800
2008-02-22$29.30$29.30641,300
2008-02-21$30.40$30.40596,300
2008-02-20$31.33$31.33679,300
2008-02-19$33.49$33.49239,100
2008-02-15$33.75$33.75355,400
2008-02-14$33.82$33.82392,000
2008-02-13$34.15$34.15327,600
2008-02-12$33.24$33.24662,800
2008-02-11$32.97$32.97709,100
2008-02-08$31.68$31.681,077,500
2008-02-07$30.33$30.33427,800
2008-02-06$30.21$30.21405,100
2008-02-05$31.27$31.27491,200
2008-02-04$31.63$31.63307,400
2008-02-01$31.16$31.16551,900
2008-01-31$30.04$30.04462,500
2008-01-30$30.47$30.47407,600
2008-01-29$31.17$31.17187,700
2008-01-28$31.30$31.30274,300
2008-01-25$31.09$31.09284,900
2008-01-24$31.47$31.47508,000
2008-01-23$31.94$31.941,246,500
2008-01-22$30.50$30.50358,800
2008-01-18$30.52$30.52508,600
2008-01-17$32.03$32.03489,500
2008-01-16$32.70$32.70578,700
2008-01-15$31.78$31.78374,100
2008-01-14$31.55$31.55250,800
2008-01-11$31.55$31.55391,000
2008-01-10$31.68$31.68414,000
2008-01-09$31.41$31.41514,300
2008-01-08$32.17$32.17980,900
2008-01-07$29.44$29.44483,900
2008-01-04$29.00$29.00460,600
2008-01-03$29.60$29.60447,800
2008-01-02$28.92$28.92313,800