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 — 2010

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2010-12-31$9.86$9.86389,000
2010-12-30$9.88$9.88215,400
2010-12-29$9.86$9.86151,000
2010-12-28$9.86$9.86221,600
2010-12-27$10.07$10.07342,400
2010-12-23$9.79$9.79417,100
2010-12-22$9.69$9.69391,100
2010-12-21$9.95$9.95379,400
2010-12-20$9.93$9.93327,900
2010-12-17$10.14$10.14483,700
2010-12-16$9.98$9.98750,600
2010-12-15$9.81$9.81331,400
2010-12-14$9.65$9.65219,100
2010-12-13$9.50$9.50275,100
2010-12-10$9.47$9.47467,100
2010-12-09$8.96$8.96485,700
2010-12-08$9.14$9.14578,000
2010-12-07$9.61$9.61237,300
2010-12-06$9.44$9.44406,400
2010-12-03$9.24$9.24471,000
2010-12-02$9.45$9.45447,800
2010-12-01$9.39$9.39333,100
2010-11-30$9.15$9.15380,400
2010-11-29$9.35$9.35462,900
2010-11-26$9.77$9.7797,600
2010-11-24$9.77$9.77251,100
2010-11-23$9.95$9.95408,100
2010-11-22$9.46$9.46543,000
2010-11-19$9.88$9.88555,800
2010-11-18$10.17$10.171,302,400
2010-11-17$10.94$10.94361,500
2010-11-16$11.55$11.55296,200
2010-11-15$11.85$11.85354,000
2010-11-12$12.14$12.14128,700
2010-11-11$12.26$12.26105,200
2010-11-10$12.39$12.39149,700
2010-11-09$12.29$12.29174,000
2010-11-08$12.55$12.55186,600
2010-11-05$12.90$12.90270,500
2010-11-04$13.20$13.20386,600
2010-11-03$12.60$12.60217,000
2010-11-02$12.57$12.57354,500
2010-11-01$12.59$12.59183,400
2010-10-29$13.14$13.14104,000
2010-10-28$13.29$13.2992,100
2010-10-27$13.52$13.52154,200
2010-10-26$13.74$13.74159,000
2010-10-25$13.68$13.6875,300
2010-10-22$13.80$13.80158,200
2010-10-21$13.38$13.38100,100
2010-10-20$13.67$13.6771,700
2010-10-19$13.51$13.51174,100
2010-10-18$13.67$13.67190,100
2010-10-15$13.68$13.68301,400
2010-10-14$13.39$13.39172,000
2010-10-13$12.98$12.98201,800
2010-10-12$12.63$12.63262,900
2010-10-11$12.81$12.81161,400
2010-10-08$12.73$12.73229,000
2010-10-07$12.34$12.34170,400
2010-10-06$12.31$12.31164,300
2010-10-05$12.23$12.23361,300
2010-10-04$12.11$12.11217,800
2010-10-01$12.15$12.15581,400
2010-09-30$12.27$12.27486,700
2010-09-29$12.41$12.41398,300
2010-09-28$12.36$12.36471,400
2010-09-27$12.47$12.47637,600
2010-09-24$13.27$13.27592,600
2010-09-23$14.22$14.22121,800
2010-09-22$14.67$14.6787,000
2010-09-21$14.79$14.79117,400
2010-09-20$15.02$15.02173,700
2010-09-17$14.48$14.48211,600
2010-09-16$14.18$14.18231,600
2010-09-15$14.27$14.27288,800
2010-09-14$14.09$14.09166,000
2010-09-13$14.26$14.26169,500
2010-09-10$14.29$14.29259,600
2010-09-09$14.18$14.18104,800
2010-09-08$14.33$14.3360,100
2010-09-07$14.26$14.26110,200
2010-09-03$14.81$14.81110,500
2010-09-02$14.81$14.81115,300
2010-09-01$14.51$14.51171,500
2010-08-31$13.67$13.67139,800
2010-08-30$14.14$14.14136,300
2010-08-27$14.71$14.71208,800
2010-08-26$13.94$13.94120,100
2010-08-25$14.16$14.16166,700
2010-08-24$13.59$13.59145,400
2010-08-23$13.75$13.75162,300
2010-08-20$13.73$13.73139,500
2010-08-19$13.68$13.68259,000
2010-08-18$14.02$14.0289,300
2010-08-17$14.09$14.09160,600
2010-08-16$13.97$13.97245,300
2010-08-13$13.77$13.77300,600
2010-08-12$13.96$13.96177,600
2010-08-11$14.06$14.06287,700
2010-08-10$14.64$14.64143,800
2010-08-09$14.99$14.99187,300
2010-08-06$14.91$14.91902,000
2010-08-05$14.95$14.95341,100
2010-08-04$15.05$15.05139,000
2010-08-03$15.19$15.19142,000
2010-08-02$15.45$15.45173,300
2010-07-30$15.35$15.3593,200
2010-07-29$15.19$15.19148,100
2010-07-28$15.23$15.2386,900
2010-07-27$15.70$15.70125,300
2010-07-26$15.81$15.81184,800
2010-07-23$15.34$15.34181,600
2010-07-22$15.35$15.35147,200
2010-07-21$14.96$14.96103,100
2010-07-20$15.20$15.20119,200
2010-07-19$14.95$14.95101,300
2010-07-16$15.00$15.00230,100
2010-07-15$15.77$15.7765,100
2010-07-14$16.04$16.0474,900
2010-07-13$16.09$16.09133,900
2010-07-12$15.58$15.58109,600
2010-07-09$15.96$15.9691,000
2010-07-08$15.65$15.65126,100
2010-07-07$15.42$15.42139,800
2010-07-06$15.06$15.06264,500
2010-07-02$15.17$15.17105,600
2010-07-01$15.04$15.04236,600
2010-06-30$15.02$15.02207,700
2010-06-29$15.25$15.25386,600
2010-06-28$15.76$15.76404,700
2010-06-25$15.60$15.60414,900
2010-06-24$15.45$15.45165,100
2010-06-23$15.34$15.34133,100
2010-06-22$15.25$15.25362,500
2010-06-21$15.12$15.12284,000
2010-06-18$14.92$14.92453,700
2010-06-17$15.61$15.61187,200
2010-06-16$15.69$15.69170,900
2010-06-15$15.98$15.98327,000
2010-06-14$15.78$15.78125,200
2010-06-11$15.99$15.99230,500
2010-06-10$15.57$15.57175,700
2010-06-09$15.23$15.23276,800
2010-06-08$15.27$15.27492,800
2010-06-07$15.75$15.75237,400
2010-06-04$16.00$16.00402,500
2010-06-03$16.09$16.09175,400
2010-06-02$15.82$15.82241,200
2010-06-01$15.40$15.40296,200
2010-05-28$15.80$15.80207,000
2010-05-27$15.67$15.67273,500
2010-05-26$15.15$15.15330,800
2010-05-25$15.35$15.35282,100
2010-05-24$15.44$15.44127,500
2010-05-21$15.55$15.55278,100
2010-05-20$15.90$15.90327,700
2010-05-19$16.37$16.37125,100
2010-05-18$16.35$16.3588,100
2010-05-17$16.45$16.45152,200
2010-05-14$16.36$16.36189,400
2010-05-13$16.83$16.83116,800
2010-05-12$17.03$17.03139,500
2010-05-11$16.71$16.71142,300
2010-05-10$16.68$16.68291,800
2010-05-07$16.00$16.00421,900
2010-05-06$16.24$16.24487,400
2010-05-05$16.90$16.90307,200
2010-05-04$17.23$17.23353,300
2010-05-03$17.09$17.09204,600
2010-04-30$16.96$16.96245,100
2010-04-29$17.58$17.58307,500
2010-04-28$17.07$17.07188,000
2010-04-27$17.01$17.01179,400
2010-04-26$16.93$16.93144,100
2010-04-23$16.92$16.92101,300
2010-04-22$16.91$16.91107,700
2010-04-21$17.00$17.00129,400
2010-04-20$17.07$17.0784,600
2010-04-19$16.99$16.99142,000
2010-04-16$17.04$17.04153,300
2010-04-15$17.05$17.05178,600
2010-04-14$16.96$16.96213,200
2010-04-13$16.91$16.91171,400
2010-04-12$16.96$16.96116,700
2010-04-09$17.17$17.17169,300
2010-04-08$17.11$17.11151,000
2010-04-07$16.98$16.98198,200
2010-04-06$17.00$17.0083,600
2010-04-05$17.06$17.06146,900
2010-04-01$17.01$17.01154,600
2010-03-31$17.02$17.02199,800
2010-03-30$17.08$17.08172,700
2010-03-29$17.17$17.17195,400
2010-03-26$17.41$17.41180,600
2010-03-25$17.93$17.93136,000
2010-03-24$18.07$18.07206,000
2010-03-23$18.70$18.70219,200
2010-03-22$17.99$17.99158,300
2010-03-19$17.68$17.68144,500
2010-03-18$17.79$17.79104,100
2010-03-17$17.92$17.92129,600
2010-03-16$18.16$18.16181,900
2010-03-15$18.15$18.1574,500
2010-03-12$18.28$18.28118,000
2010-03-11$18.70$18.7099,800
2010-03-10$18.32$18.32145,100
2010-03-09$18.16$18.1695,200
2010-03-08$18.17$18.17153,200
2010-03-05$18.24$18.24163,700
2010-03-04$18.01$18.01151,900
2010-03-03$17.89$17.89129,300
2010-03-02$17.73$17.73148,800
2010-03-01$17.48$17.48174,300
2010-02-26$17.42$17.42218,200
2010-02-25$17.97$17.97133,400
2010-02-24$17.94$17.94157,600
2010-02-23$17.79$17.79269,100
2010-02-22$17.01$17.0185,100
2010-02-19$17.39$17.39101,500
2010-02-18$17.43$17.4351,600
2010-02-17$17.49$17.49107,400
2010-02-16$17.40$17.40100,500
2010-02-12$17.48$17.48122,400
2010-02-11$17.15$17.15128,900
2010-02-10$16.75$16.75193,900
2010-02-09$16.93$16.93140,400
2010-02-08$16.91$16.91109,900
2010-02-05$16.67$16.67178,500
2010-02-04$16.57$16.57271,700
2010-02-03$17.78$17.78265,900
2010-02-02$17.36$17.36142,000
2010-02-01$17.11$17.11163,700
2010-01-29$16.90$16.90120,100
2010-01-28$16.84$16.84186,600
2010-01-27$17.36$17.36154,400
2010-01-26$16.93$16.93129,200
2010-01-25$17.04$17.04150,200
2010-01-22$17.28$17.28204,500
2010-01-21$17.21$17.21156,300
2010-01-20$17.85$17.85208,600
2010-01-19$18.16$18.16176,100
2010-01-15$17.60$17.60270,900
2010-01-14$18.40$18.40104,400
2010-01-13$18.50$18.50162,500
2010-01-12$18.00$18.00216,300
2010-01-11$18.72$18.72133,400
2010-01-08$18.68$18.68212,300
2010-01-07$18.61$18.61140,100
2010-01-06$18.35$18.35162,400
2010-01-05$18.01$18.01146,100
2010-01-04$18.14$18.14163,200