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 — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$13.32$13.32104,300
2005-12-29$13.25$13.2596,400
2005-12-28$13.42$13.42117,100
2005-12-27$13.35$13.35156,700
2005-12-23$13.49$13.4967,900
2005-12-22$13.47$13.47102,600
2005-12-21$12.90$12.9061,700
2005-12-20$12.76$12.7681,000
2005-12-19$13.04$13.04163,200
2005-12-16$13.78$13.78225,900
2005-12-15$12.90$12.90155,900
2005-12-14$13.51$13.51619,200
2005-12-13$14.01$14.01228,800
2005-12-12$13.82$13.82102,700
2005-12-09$13.68$13.68147,800
2005-12-08$13.69$13.69324,600
2005-12-07$13.12$13.12117,900
2005-12-06$12.93$12.9395,500
2005-12-05$12.89$12.8966,300
2005-12-02$12.92$12.92141,800
2005-12-01$12.83$12.83105,300
2005-11-30$12.56$12.56105,900
2005-11-29$12.55$12.5591,100
2005-11-28$12.66$12.66139,400
2005-11-25$12.86$12.86146,200
2005-11-23$12.94$12.94462,000
2005-11-22$12.69$12.69269,000
2005-11-21$12.00$12.00155,600
2005-11-18$11.55$11.55340,800
2005-11-17$11.02$11.0269,600
2005-11-16$10.92$10.92207,700
2005-11-15$10.62$10.62143,400
2005-11-14$10.73$10.73114,700
2005-11-11$10.50$10.5056,900
2005-11-10$10.48$10.48101,100
2005-11-09$10.48$10.4874,400
2005-11-08$10.36$10.3642,100
2005-11-07$10.43$10.4337,600
2005-11-04$10.40$10.4060,800
2005-11-03$10.37$10.3798,900
2005-11-02$10.09$10.09103,600
2005-11-01$9.67$9.67108,100
2005-10-31$9.61$9.61200,800
2005-10-28$9.27$9.27161,000
2005-10-27$9.75$9.7573,200
2005-10-26$10.05$10.0567,800
2005-10-25$10.25$10.2596,800
2005-10-24$10.00$10.0073,700
2005-10-21$10.11$10.1164,700
2005-10-20$10.04$10.0473,400
2005-10-19$10.33$10.33131,500
2005-10-18$10.60$10.60104,200
2005-10-17$10.91$10.9189,100
2005-10-14$10.95$10.95118,300
2005-10-13$10.37$10.37133,000
2005-10-12$9.90$9.90205,900
2005-10-11$10.56$10.56402,000
2005-10-10$10.16$10.16384,900
2005-10-07$10.21$10.21200,000
2005-10-06$10.55$10.55289,200
2005-10-05$11.21$11.21113,400
2005-10-04$11.74$11.74476,400
2005-10-03$11.58$11.58241,100
2005-09-30$11.30$11.30740,400
2005-09-29$11.92$11.92195,800
2005-09-28$11.45$11.45137,400
2005-09-27$11.46$11.46129,200
2005-09-26$11.57$11.5771,400
2005-09-23$11.55$11.55200,000
2005-09-22$11.83$11.83128,400
2005-09-21$11.65$11.65416,200
2005-09-20$12.19$12.19806,700
2005-09-19$13.11$13.11251,700
2005-09-16$13.36$13.36145,700
2005-09-15$13.39$13.3993,600
2005-09-14$13.34$13.34163,500
2005-09-13$13.42$13.42896,000
2005-09-12$14.19$14.19994,500
2005-09-09$13.72$13.72355,000
2005-09-08$13.83$13.83979,400
2005-09-07$13.75$13.756,428,800
2005-09-06$9.56$9.5670,600
2005-09-02$9.66$9.6678,700
2005-09-01$9.58$9.58131,700
2005-08-31$9.50$9.50140,400
2005-08-30$9.25$9.2577,900
2005-08-29$9.28$9.28122,200
2005-08-26$9.39$9.39110,800
2005-08-25$9.50$9.50118,600
2005-08-24$9.37$9.37110,000
2005-08-23$9.18$9.18171,500
2005-08-22$9.27$9.2723,600
2005-08-19$9.25$9.2577,400
2005-08-18$9.23$9.23163,900
2005-08-17$9.37$9.3789,800
2005-08-16$9.01$9.01161,200
2005-08-15$9.14$9.1479,400
2005-08-12$9.12$9.1263,900
2005-08-11$9.05$9.05131,700
2005-08-10$8.96$8.9631,900
2005-08-09$8.99$8.9980,100
2005-08-08$8.73$8.73202,600
2005-08-05$8.95$8.95183,200
2005-08-04$9.30$9.30227,800
2005-08-03$10.03$10.0350,900
2005-08-02$10.00$10.00186,000
2005-08-01$9.69$9.6987,300
2005-07-29$9.75$9.7563,900
2005-07-28$9.69$9.6975,100
2005-07-27$9.80$9.8077,200
2005-07-26$9.81$9.81173,100
2005-07-25$9.47$9.4791,200
2005-07-22$9.54$9.54147,500
2005-07-21$9.88$9.88254,900
2005-07-20$9.40$9.40730,300
2005-07-19$8.30$8.3075,100
2005-07-18$8.08$8.0899,900
2005-07-15$7.75$7.7572,100
2005-07-14$7.67$7.67150,800
2005-07-13$7.32$7.32104,800
2005-07-12$7.02$7.0260,900
2005-07-11$7.00$7.0083,200
2005-07-08$7.13$7.1317,000
2005-07-07$7.12$7.125,600
2005-07-06$7.05$7.05103,200
2005-07-05$7.00$7.0062,900
2005-07-01$7.21$7.2129,500
2005-06-30$7.30$7.3019,200
2005-06-29$7.36$7.3610,300
2005-06-28$7.26$7.2611,300
2005-06-27$7.29$7.2914,100
2005-06-24$7.15$7.1516,400
2005-06-23$7.35$7.3531,200
2005-06-22$7.50$7.5014,000
2005-06-21$7.42$7.4249,500
2005-06-20$7.69$7.6961,300
2005-06-17$7.49$7.4928,300
2005-06-16$7.40$7.4046,400
2005-06-15$7.07$7.078,700
2005-06-14$7.05$7.0538,000
2005-06-13$7.10$7.1068,500
2005-06-10$7.38$7.3813,100
2005-06-09$7.53$7.5329,900
2005-06-08$7.08$7.0834,700
2005-06-07$7.26$7.2630,300
2005-06-06$7.19$7.1910,500
2005-06-03$7.24$7.2425,800
2005-06-02$7.20$7.2036,500
2005-06-01$7.44$7.4413,700
2005-05-31$7.46$7.4627,600
2005-05-27$7.42$7.4216,600
2005-05-26$7.46$7.4634,300
2005-05-25$7.48$7.48104,500
2005-05-24$7.60$7.6037,600
2005-05-23$7.80$7.8033,100
2005-05-20$8.12$8.1235,600
2005-05-19$8.10$8.1049,200
2005-05-18$7.82$7.827,400
2005-05-17$7.91$7.9113,400
2005-05-16$7.99$7.9918,800
2005-05-13$7.77$7.7744,200
2005-05-12$7.94$7.9445,200
2005-05-11$8.07$8.0751,700
2005-05-10$7.78$7.7846,500
2005-05-09$7.90$7.9011,500
2005-05-06$7.99$7.9921,200
2005-05-05$8.12$8.1221,000
2005-05-04$7.99$7.9931,100
2005-05-03$7.81$7.8178,600
2005-05-02$7.75$7.7518,500
2005-04-29$7.78$7.7877,900
2005-04-28$7.69$7.6939,400
2005-04-27$8.19$8.19137,000
2005-04-26$7.90$7.9016,300
2005-04-25$7.96$7.9620,800
2005-04-22$8.30$8.3044,100
2005-04-21$7.95$7.9532,900
2005-04-20$8.26$8.2629,400
2005-04-19$8.27$8.2717,400
2005-04-18$8.24$8.24129,900
2005-04-15$8.11$8.11131,600
2005-04-14$8.58$8.5854,200
2005-04-13$8.75$8.75138,600
2005-04-12$8.63$8.63105,200
2005-04-11$8.49$8.49173,500
2005-04-08$8.22$8.2225,000
2005-04-07$8.27$8.27147,000
2005-04-06$7.97$7.9775,300
2005-04-05$7.53$7.5324,900
2005-04-04$7.34$7.343,900
2005-04-01$7.29$7.2910,400
2005-03-31$7.33$7.3321,500
2005-03-30$7.35$7.3538,500
2005-03-29$7.25$7.2539,600
2005-03-28$7.39$7.3944,700
2005-03-24$7.42$7.4267,200
2005-03-23$7.51$7.5171,700
2005-03-22$7.73$7.7368,700
2005-03-21$7.96$7.96211,100
2005-03-18$7.13$7.1393,800
2005-03-17$7.05$7.0557,700
2005-03-16$6.98$6.98104,800
2005-03-15$6.98$6.9867,300
2005-03-14$6.90$6.90175,200
2005-03-11$6.95$6.9580,000
2005-03-10$6.91$6.9143,600
2005-03-09$6.91$6.9169,200
2005-03-08$6.91$6.9170,300
2005-03-07$6.91$6.91114,400
2005-03-04$6.91$6.9144,600
2005-03-03$6.91$6.9151,100
2005-03-02$7.00$7.0030,800
2005-03-01$6.99$6.99154,600
2005-02-28$7.15$7.1570,000
2005-02-25$7.15$7.1524,700
2005-02-24$7.17$7.1744,400
2005-02-23$7.18$7.1852,000
2005-02-22$7.10$7.10141,000
2005-02-18$7.00$7.0096,500
2005-02-17$7.04$7.04145,800
2005-02-16$7.30$7.3092,400
2005-02-15$7.75$7.7599,400
2005-02-14$7.97$7.9754,500
2005-02-11$7.81$7.8170,200
2005-02-10$7.84$7.8477,900
2005-02-09$8.10$8.10131,100
2005-02-08$7.74$7.7498,400
2005-02-07$8.02$8.02189,100
2005-02-04$7.61$7.61106,600
2005-02-03$7.68$7.68333,800
2005-02-02$7.35$7.35484,000
2005-02-01$7.00$7.00109,000
2005-01-31$7.00$7.0098,300
2005-01-28$6.91$6.9169,600
2005-01-27$7.05$7.0571,700
2005-01-26$7.05$7.05180,800
2005-01-25$7.20$7.20180,400
2005-01-24$7.00$7.00230,800
2005-01-21$7.35$7.35212,600
2005-01-20$7.50$7.50136,700
2005-01-19$7.69$7.69516,900
2005-01-18$8.37$8.37304,400
2005-01-14$8.80$8.80114,100
2005-01-13$8.73$8.73120,900
2005-01-12$8.81$8.81241,300
2005-01-11$9.09$9.09379,300
2005-01-10$10.23$10.23648,400
2005-01-07$9.00$9.00228,000
2005-01-06$8.70$8.70610,600
2005-01-05$8.05$8.05459,600
2005-01-04$7.55$7.55158,700
2005-01-03$7.58$7.58218,600