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 — 2020

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2020-12-31$129.97$129.97338,700——
2020-12-30$131.04$131.04256,900——
2020-12-29$130.56$130.56368,100——
2020-12-28$134.08$134.08340,000——
2020-12-24$137.56$137.56151,000——
2020-12-23$138.62$138.62590,000——
2020-12-22$138.31$138.31562,200——
2020-12-21$139.43$139.43486,500——
2020-12-18$142.39$142.391,235,300——
2020-12-17$138.65$138.65601,300——
2020-12-16$138.32$138.32584,800——
2020-12-15$135.70$135.70417,900——
2020-12-14$132.69$132.69529,800——
2020-12-11$129.65$129.65493,400——
2020-12-10$126.05$126.05349,800——
2020-12-09$124.04$124.04530,700——
2020-12-08$128.05$128.05346,400——
2020-12-07$126.81$126.81312,600——
2020-12-04$129.56$129.56320,600——
2020-12-03$131.17$131.17299,600——
2020-12-02$129.47$129.47356,100——
2020-12-01$132.27$132.27457,600——
2020-11-30$129.91$129.91824,900——
2020-11-27$129.86$129.86265,000——
2020-11-25$125.45$125.45512,800——
2020-11-24$125.66$125.66872,400——
2020-11-23$123.02$123.02493,600——
2020-11-20$124.70$124.70425,600——
2020-11-19$123.81$123.81689,800——
2020-11-18$125.45$125.45678,000——
2020-11-17$129.30$129.30391,400——
2020-11-16$131.05$131.05463,400——
2020-11-13$135.51$135.51725,900——
2020-11-12$132.44$132.44472,200——
2020-11-11$129.09$129.09740,400——
2020-11-10$125.05$125.05844,700——
2020-11-09$127.48$127.48605,100——
2020-11-06$130.73$130.73957,000——
2020-11-05$137.86$137.86742,700——
2020-11-04$139.49$139.49891,900——
2020-11-03$129.05$129.05360,200——
2020-11-02$124.91$124.91479,800——
2020-10-30$122.97$122.97733,500——
2020-10-29$123.32$123.32547,500——
2020-10-28$124.88$124.88447,500——
2020-10-27$126.82$126.82522,000——
2020-10-26$128.67$128.67473,300——
2020-10-23$131.84$131.84528,900——
2020-10-22$134.30$134.30480,100——
2020-10-21$136.48$136.48359,800——
2020-10-20$141.45$141.45346,700——
2020-10-19$140.64$140.64535,500——
2020-10-16$145.40$145.40338,600——
2020-10-15$143.94$143.94302,800——
2020-10-14$143.91$143.91252,000——
2020-10-13$146.66$146.66267,400——
2020-10-12$147.00$147.00313,600——
2020-10-09$147.00$147.00275,500——
2020-10-08$146.04$146.04247,300——
2020-10-07$145.40$145.40386,100——
2020-10-06$143.26$143.26366,500——
2020-10-05$142.00$142.00494,900——
2020-10-02$135.68$135.68614,400——
2020-10-01$143.74$143.74558,800——
2020-09-30$145.60$145.60548,000——
2020-09-29$145.01$145.01501,700——
2020-09-28$139.81$139.81352,900——
2020-09-25$138.31$138.31635,400——
2020-09-24$133.34$133.34428,000——
2020-09-23$134.50$134.50458,100——
2020-09-22$133.64$133.64465,400——
2020-09-21$130.92$130.92560,900——
2020-09-18$132.26$132.261,476,800——
2020-09-17$131.02$131.02408,500——
2020-09-16$131.28$131.28506,700——
2020-09-15$130.51$130.51448,500——
2020-09-14$131.00$131.00693,400——
2020-09-11$122.44$122.44449,000——
2020-09-10$121.19$121.19385,700——
2020-09-09$123.06$123.06535,600——
2020-09-08$122.99$122.99753,600——
2020-09-04$122.83$122.83459,400——
2020-09-03$125.19$125.19310,900——
2020-09-02$130.66$130.66428,600——
2020-09-01$130.41$130.41475,400——
2020-08-31$132.64$132.64804,400——
2020-08-28$131.41$131.41200,600——
2020-08-27$133.05$133.05410,600——
2020-08-26$133.05$133.05363,200——
2020-08-25$134.09$134.09423,100——
2020-08-24$131.75$131.75449,400——
2020-08-21$136.60$136.60355,400——
2020-08-20$136.36$136.36486,800——
2020-08-19$137.22$137.22299,000——
2020-08-18$139.92$139.92298,900——
2020-08-17$140.70$140.70487,900——
2020-08-14$136.14$136.14213,300——
2020-08-13$137.43$137.43313,900——
2020-08-12$136.69$136.69391,600——
2020-08-11$136.61$136.61469,900——
2020-08-10$138.57$138.57536,500——
2020-08-07$143.53$143.53400,600——
2020-08-06$144.12$144.12705,500——
2020-08-05$150.44$150.44573,900——
2020-08-04$152.76$152.76318,900——
2020-08-03$152.30$152.30415,600——
2020-07-31$145.76$145.76507,300——
2020-07-30$151.11$151.11295,600——
2020-07-29$150.56$150.56426,400——
2020-07-28$154.33$154.33517,500——
2020-07-27$157.51$157.51951,800——
2020-07-24$153.10$153.10281,300——
2020-07-23$154.61$154.61636,100——
2020-07-22$157.98$157.98363,400——
2020-07-21$158.03$158.03692,000——
2020-07-20$165.49$165.49906,200——
2020-07-17$158.36$158.36333,300——
2020-07-16$156.03$156.03362,600——
2020-07-15$158.02$158.02471,900——
2020-07-14$157.23$157.23769,300——
2020-07-13$152.74$152.74667,900——
2020-07-10$162.25$162.25748,700——
2020-07-09$158.74$158.74480,100——
2020-07-08$160.42$160.42851,800——
2020-07-07$160.00$160.001,616,400——
2020-07-06$152.43$152.43923,600——
2020-07-02$149.87$149.87419,300——
2020-07-01$148.77$148.77480,100——
2020-06-30$148.11$148.11903,200——
2020-06-29$147.91$147.91499,200——
2020-06-26$151.90$151.902,866,000——
2020-06-25$156.44$156.44806,500——
2020-06-24$151.76$151.76757,400——
2020-06-23$151.83$151.831,280,000——
2020-06-22$153.00$153.001,292,100——
2020-06-19$150.71$150.712,540,500——
2020-06-18$141.99$141.99922,800——
2020-06-17$136.67$136.671,654,800——
2020-06-16$132.26$132.26414,500——
2020-06-15$128.38$128.38600,500——
2020-06-12$125.39$125.39838,300——
2020-06-11$125.91$125.91865,800——
2020-06-10$129.71$129.71608,100——
2020-06-09$129.79$129.79535,800——
2020-06-08$130.44$130.44612,800——
2020-06-05$127.59$127.59610,900——
2020-06-04$131.90$131.90623,500——
2020-06-03$137.25$137.25563,700——
2020-06-02$138.82$138.82705,200——
2020-06-01$133.57$133.57560,200——
2020-05-29$135.27$135.27869,800——
2020-05-28$133.10$133.10579,400——
2020-05-27$133.35$133.35856,900——
2020-05-26$136.43$136.43806,100——
2020-05-22$140.52$140.52776,000——
2020-05-21$141.86$141.86669,100——
2020-05-20$143.45$143.45737,500——
2020-05-19$142.41$142.41484,800——
2020-05-18$144.87$144.87617,300——
2020-05-15$139.28$139.28762,600——
2020-05-14$136.20$136.20935,100——
2020-05-13$139.46$139.46857,800——
2020-05-12$144.19$144.19835,300——
2020-05-11$142.43$142.43899,300——
2020-05-08$136.13$136.13708,200——
2020-05-07$141.45$141.451,048,200——
2020-05-06$145.27$145.272,229,300——
2020-05-05$141.23$141.23735,600——
2020-05-04$136.63$136.63923,200——
2020-05-01$128.97$128.97525,700——
2020-04-30$131.70$131.70679,200——
2020-04-29$135.81$135.81651,200——
2020-04-28$137.50$137.50626,600——
2020-04-27$142.70$142.70487,300——
2020-04-24$145.63$145.63696,400——
2020-04-23$141.64$141.641,092,000——
2020-04-22$140.11$140.11383,300——
2020-04-21$137.85$137.851,203,400——
2020-04-20$144.87$144.871,469,600——
2020-04-17$138.48$138.481,386,300——
2020-04-16$127.72$127.72894,800——
2020-04-15$121.50$121.50451,000——
2020-04-14$120.72$120.72822,800——
2020-04-13$119.01$119.011,215,000——
2020-04-09$116.38$116.38572,000——
2020-04-08$111.39$111.39737,400——
2020-04-07$109.52$109.52773,500——
2020-04-06$112.14$112.14774,200——
2020-04-03$105.82$105.82501,400——
2020-04-02$104.21$104.21805,000——
2020-04-01$104.54$104.54742,700——
2020-03-31$108.85$108.851,156,600——
2020-03-30$108.83$108.83612,200——
2020-03-27$104.20$104.20719,900——
2020-03-26$107.21$107.21894,100——
2020-03-25$98.78$98.78855,400——
2020-03-24$99.94$99.94827,200——
2020-03-23$99.06$99.06804,500——
2020-03-20$103.85$103.851,279,300——
2020-03-19$105.97$105.97917,400——
2020-03-18$103.74$103.741,062,800——
2020-03-17$103.00$103.001,498,300——
2020-03-16$98.30$98.302,229,100——
2020-03-13$101.57$101.571,077,100——
2020-03-12$93.12$93.12912,500——
2020-03-11$101.89$101.89766,400——
2020-03-10$109.39$109.39970,500——
2020-03-09$109.96$109.96914,500——
2020-03-06$113.39$113.39613,700——
2020-03-05$116.91$116.91582,800——
2020-03-04$117.24$117.24699,900——
2020-03-03$111.42$111.42569,800——
2020-03-02$114.78$114.781,032,600——
2020-02-28$117.66$117.661,107,000——
2020-02-27$112.49$112.49949,200——
2020-02-26$118.05$118.05537,900——
2020-02-25$119.29$119.29550,900——
2020-02-24$122.29$122.29747,100——
2020-02-21$131.03$131.03429,200——
2020-02-20$133.12$133.12714,900——
2020-02-19$129.00$129.00326,300——
2020-02-18$128.68$128.68750,100——
2020-02-14$128.70$128.70399,000——
2020-02-13$130.10$130.10416,500——
2020-02-12$133.99$133.99897,100——
2020-02-11$129.54$129.54873,000——
2020-02-10$131.50$131.501,496,600——
2020-02-07$125.48$125.48852,300——
2020-02-06$121.96$121.961,090,300——
2020-02-05$121.59$121.59806,400——
2020-02-04$119.96$119.96734,100——
2020-02-03$114.66$114.66505,600——
2020-01-31$114.79$114.79484,600——
2020-01-30$115.45$115.45392,800——
2020-01-29$117.93$117.93517,200——
2020-01-28$114.72$114.72644,700——
2020-01-27$117.03$117.03884,000——
2020-01-24$120.00$120.00894,600——
2020-01-23$117.96$117.96704,600——
2020-01-22$115.63$115.63663,500——
2020-01-21$117.98$117.98656,600——
2020-01-17$118.82$118.82860,400——
2020-01-16$119.34$119.34522,800——
2020-01-15$118.09$118.09694,200——
2020-01-14$118.44$118.44836,900——
2020-01-13$114.65$114.65878,600——
2020-01-10$119.25$119.25647,100——
2020-01-09$118.06$118.06604,100——
2020-01-08$115.47$115.47554,400——
2020-01-07$115.29$115.29392,300——
2020-01-06$115.97$115.97668,600——
2020-01-03$115.68$115.68426,000——
2020-01-02$115.62$115.62593,500——