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 — 2021

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2021-12-31$169.58$169.58381,800
2021-12-30$171.03$171.03676,900
2021-12-29$170.08$170.08582,900
2021-12-28$168.70$168.701,207,100
2021-12-27$161.11$161.114,531,500
2021-12-23$194.35$194.35390,400
2021-12-22$187.38$187.381,240,000
2021-12-21$199.59$199.591,174,900
2021-12-20$198.29$198.291,526,200
2021-12-17$194.57$194.57957,600
2021-12-16$184.88$184.88560,500
2021-12-15$191.06$191.06760,100
2021-12-14$185.73$185.73658,500
2021-12-13$186.42$186.42891,100
2021-12-10$173.65$173.65394,400
2021-12-09$172.47$172.471,133,800
2021-12-08$176.92$176.92731,900
2021-12-07$180.28$180.281,107,400
2021-12-06$177.00$177.00581,700
2021-12-03$171.36$171.36640,100
2021-12-02$182.85$182.85430,700
2021-12-01$179.93$179.93371,400
2021-11-30$183.80$183.80844,500
2021-11-29$180.74$180.74417,900
2021-11-26$188.53$188.53341,300
2021-11-24$188.80$188.80273,200
2021-11-23$187.15$187.15565,000
2021-11-22$187.01$187.011,367,000
2021-11-19$181.00$181.00645,400
2021-11-18$178.98$178.981,716,200
2021-11-17$172.73$172.73483,800
2021-11-16$172.94$172.94305,700
2021-11-15$173.31$173.31571,300
2021-11-12$170.87$170.87603,800
2021-11-11$173.05$173.05532,300
2021-11-10$176.25$176.25424,800
2021-11-09$183.92$183.92471,500
2021-11-08$187.97$187.97592,800
2021-11-05$187.25$187.25710,000
2021-11-04$185.55$185.551,039,400
2021-11-03$172.87$172.87947,600
2021-11-02$167.65$167.65596,900
2021-11-01$166.36$166.36807,800
2021-10-29$159.56$159.561,466,200
2021-10-28$162.14$162.142,766,300
2021-10-27$191.16$191.16769,200
2021-10-26$197.71$197.71376,300
2021-10-25$199.67$199.67398,400
2021-10-22$198.61$198.61481,300
2021-10-21$204.33$204.33237,500
2021-10-20$203.82$203.82279,700
2021-10-19$206.59$206.59259,700
2021-10-18$203.90$203.90332,500
2021-10-15$208.56$208.56404,900
2021-10-14$209.29$209.29455,200
2021-10-13$203.89$203.89317,400
2021-10-12$203.44$203.44402,300
2021-10-11$204.53$204.53222,200
2021-10-08$203.70$203.70313,600
2021-10-07$202.91$202.91307,400
2021-10-06$201.08$201.08555,600
2021-10-05$198.35$198.35394,800
2021-10-04$195.02$195.02606,700
2021-10-01$192.68$192.68400,300
2021-09-30$188.81$188.81773,000
2021-09-29$177.45$177.45388,200
2021-09-28$177.08$177.081,247,400
2021-09-27$193.85$193.85799,600
2021-09-24$187.40$187.40228,300
2021-09-23$186.95$186.95292,600
2021-09-22$182.21$182.211,042,300
2021-09-21$184.15$184.15761,800
2021-09-20$183.46$183.46575,000
2021-09-17$190.34$190.341,187,000
2021-09-16$190.20$190.20323,900
2021-09-15$187.48$187.48417,500
2021-09-14$187.97$187.97401,700
2021-09-13$185.79$185.79496,100
2021-09-10$189.55$189.55374,600
2021-09-09$189.60$189.60349,600
2021-09-08$186.31$186.31324,800
2021-09-07$188.27$188.27656,100
2021-09-03$197.46$197.46321,000
2021-09-02$200.18$200.18540,800
2021-09-01$197.04$197.04587,900
2021-08-31$201.43$201.43806,900
2021-08-30$203.51$203.51467,300
2021-08-27$203.93$203.93376,800
2021-08-26$202.39$202.39335,800
2021-08-25$204.92$204.92365,200
2021-08-24$201.90$201.90299,000
2021-08-23$198.40$198.40911,100
2021-08-20$197.78$197.78973,700
2021-08-19$196.99$196.99379,600
2021-08-18$197.53$197.53475,100
2021-08-17$200.25$200.25586,800
2021-08-16$196.78$196.78663,400
2021-08-13$196.54$196.54865,800
2021-08-12$200.92$200.92450,900
2021-08-11$202.85$202.851,169,200
2021-08-10$207.73$207.73979,200
2021-08-09$200.25$200.251,291,900
2021-08-06$195.23$195.23815,800
2021-08-05$193.90$193.90972,700
2021-08-04$183.44$183.44800,500
2021-08-03$178.81$178.81986,000
2021-08-02$177.96$177.96448,400
2021-07-30$178.94$178.94409,200
2021-07-29$181.83$181.83345,700
2021-07-28$182.10$182.10354,300
2021-07-27$176.59$176.59350,600
2021-07-26$178.11$178.11270,700
2021-07-23$182.41$182.41514,400
2021-07-22$181.81$181.81768,900
2021-07-21$180.09$180.09718,900
2021-07-20$183.17$183.171,395,900
2021-07-19$175.31$175.31517,900
2021-07-16$177.54$177.54544,300
2021-07-15$171.95$171.95474,900
2021-07-14$170.34$170.34609,300
2021-07-13$175.63$175.63450,600
2021-07-12$177.03$177.03908,100
2021-07-09$176.74$176.74655,900
2021-07-08$172.50$172.50364,100
2021-07-07$172.59$172.59358,100
2021-07-06$174.38$174.38669,500
2021-07-02$171.43$171.43338,900
2021-07-01$169.75$169.75522,400
2021-06-30$169.52$169.52652,000
2021-06-29$165.87$165.87756,200
2021-06-28$166.20$166.202,069,600
2021-06-25$175.39$175.39914,800
2021-06-24$173.68$173.68790,200
2021-06-23$174.63$174.63530,100
2021-06-22$172.95$172.95721,100
2021-06-21$171.26$171.261,060,100
2021-06-18$176.89$176.891,522,800
2021-06-17$172.25$172.25629,600
2021-06-16$168.30$168.30709,600
2021-06-15$166.50$166.50981,800
2021-06-14$166.66$166.66821,300
2021-06-11$165.02$165.02712,600
2021-06-10$163.26$163.26655,300
2021-06-09$157.41$157.41653,500
2021-06-08$151.08$151.08470,500
2021-06-07$150.46$150.46847,100
2021-06-04$145.60$145.60413,300
2021-06-03$147.29$147.29556,900
2021-06-02$142.85$142.85761,100
2021-06-01$144.28$144.28591,200
2021-05-28$141.99$141.99490,500
2021-05-27$140.23$140.23553,200
2021-05-26$138.80$138.80569,200
2021-05-25$139.40$139.40504,300
2021-05-24$138.28$138.28343,300
2021-05-21$140.06$140.06471,000
2021-05-20$140.10$140.10512,200
2021-05-19$134.93$134.93442,500
2021-05-18$135.15$135.15241,400
2021-05-17$135.89$135.89262,700
2021-05-14$135.70$135.70457,700
2021-05-13$132.92$132.92609,000
2021-05-12$133.36$133.36440,700
2021-05-11$132.41$132.41497,000
2021-05-10$128.63$128.63397,800
2021-05-07$131.30$131.30325,800
2021-05-06$132.10$132.10630,200
2021-05-05$132.67$132.67613,500
2021-05-04$131.57$131.57644,700
2021-05-03$135.34$135.34554,800
2021-04-30$140.64$140.64430,900
2021-04-29$139.69$139.69731,400
2021-04-28$143.53$143.53454,000
2021-04-27$141.30$141.30541,900
2021-04-26$142.90$142.90683,200
2021-04-23$136.72$136.72328,300
2021-04-22$137.77$137.77370,100
2021-04-21$137.53$137.53241,900
2021-04-20$136.03$136.03508,200
2021-04-19$137.40$137.40492,600
2021-04-16$138.88$138.88768,400
2021-04-15$139.02$139.02428,300
2021-04-14$138.31$138.31566,000
2021-04-13$136.23$136.23477,000
2021-04-12$135.03$135.03522,700
2021-04-09$138.23$138.23419,900
2021-04-08$142.50$142.50347,000
2021-04-07$140.67$140.67336,700
2021-04-06$142.01$142.01411,700
2021-04-05$142.65$142.65399,400
2021-04-01$141.81$141.81325,000
2021-03-31$141.19$141.19539,700
2021-03-30$135.13$135.13359,700
2021-03-29$133.80$133.80320,000
2021-03-26$136.25$136.25252,600
2021-03-25$135.24$135.24637,400
2021-03-24$134.63$134.63464,400
2021-03-23$138.66$138.66405,100
2021-03-22$144.15$144.15643,100
2021-03-19$144.16$144.161,046,700
2021-03-18$140.04$140.04345,300
2021-03-17$145.15$145.15459,400
2021-03-16$143.78$143.78650,700
2021-03-15$146.12$146.12535,800
2021-03-12$142.20$142.20465,900
2021-03-11$142.98$142.98704,300
2021-03-10$134.68$134.68517,000
2021-03-09$137.68$137.68881,300
2021-03-08$138.62$138.62583,800
2021-03-05$143.39$143.39491,300
2021-03-04$137.37$137.37791,000
2021-03-03$144.32$144.32500,700
2021-03-02$152.41$152.41571,900
2021-03-01$148.75$148.75443,300
2021-02-26$148.10$148.10504,700
2021-02-25$146.59$146.59461,600
2021-02-24$151.59$151.59369,000
2021-02-23$153.21$153.21602,200
2021-02-22$148.07$148.07469,600
2021-02-19$155.06$155.06682,700
2021-02-18$150.23$150.23710,800
2021-02-17$156.53$156.53512,400
2021-02-16$153.81$153.81803,000
2021-02-12$157.92$157.92924,700
2021-02-11$165.38$165.38617,500
2021-02-10$164.16$164.16892,100
2021-02-09$167.65$167.65510,200
2021-02-08$165.15$165.15636,100
2021-02-05$165.11$165.11616,400
2021-02-04$157.91$157.91879,000
2021-02-03$151.25$151.25812,500
2021-02-02$154.05$154.05999,000
2021-02-01$149.25$149.25854,700
2021-01-29$150.48$150.48931,700
2021-01-28$154.74$154.74829,800
2021-01-27$155.39$155.391,249,200
2021-01-26$170.02$170.02539,600
2021-01-25$175.69$175.691,158,000
2021-01-22$172.38$172.38535,000
2021-01-21$166.75$166.75543,700
2021-01-20$170.97$170.971,028,000
2021-01-19$168.41$168.41637,900
2021-01-15$166.36$166.36711,600
2021-01-14$165.07$165.071,280,000
2021-01-13$170.93$170.932,440,800
2021-01-12$165.65$165.651,559,800
2021-01-11$156.63$156.631,306,400
2021-01-08$146.66$146.66829,700
2021-01-07$139.40$139.401,072,700
2021-01-06$126.83$126.83758,500
2021-01-05$127.45$127.45499,700
2021-01-04$128.10$128.10527,600