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 — 2023

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2023-12-29$191.41$191.41270,100
2023-12-28$195.71$195.71446,100
2023-12-27$196.57$196.57447,700
2023-12-26$191.20$191.20308,200
2023-12-22$191.02$191.02592,800
2023-12-21$181.14$181.14273,400
2023-12-20$179.05$179.05659,500
2023-12-19$187.50$187.50534,500
2023-12-18$186.23$186.23399,000
2023-12-15$185.24$185.241,210,000
2023-12-14$186.48$186.481,583,000
2023-12-13$180.52$180.52787,100
2023-12-12$173.88$173.88461,100
2023-12-11$170.92$170.92539,500
2023-12-08$170.04$170.04467,400
2023-12-07$177.26$177.26675,100
2023-12-06$175.02$175.02658,900
2023-12-05$170.37$170.37567,000
2023-12-04$172.87$172.87387,400
2023-12-01$171.41$171.41366,500
2023-11-30$168.25$168.25780,600
2023-11-29$164.01$164.01915,100
2023-11-28$161.36$161.36380,800
2023-11-27$159.20$159.20641,200
2023-11-24$162.92$162.92143,000
2023-11-22$162.88$162.88307,100
2023-11-21$163.68$163.68602,100
2023-11-20$165.26$165.26511,800
2023-11-17$163.73$163.73654,800
2023-11-16$168.97$168.97448,800
2023-11-15$171.05$171.05479,500
2023-11-14$169.99$169.99868,500
2023-11-13$165.01$165.01334,200
2023-11-10$161.89$161.89658,700
2023-11-09$164.52$164.52649,900
2023-11-08$169.40$169.40635,700
2023-11-07$170.20$170.201,004,400
2023-11-06$167.15$167.15499,800
2023-11-03$167.35$167.35653,400
2023-11-02$161.53$161.53790,000
2023-11-01$157.00$157.00785,600
2023-10-31$151.80$151.80658,100
2023-10-30$151.41$151.41616,200
2023-10-27$151.76$151.76623,800
2023-10-26$155.66$155.66644,100
2023-10-25$159.49$159.49483,200
2023-10-24$163.96$163.96371,300
2023-10-23$162.00$162.00340,000
2023-10-20$161.79$161.791,035,000
2023-10-19$160.50$160.50695,600
2023-10-18$165.08$165.08495,200
2023-10-17$165.98$165.981,457,300
2023-10-16$167.25$167.25549,700
2023-10-13$168.12$168.12520,400
2023-10-12$165.29$165.29790,000
2023-10-11$167.82$167.82793,700
2023-10-10$169.06$169.06936,700
2023-10-09$168.32$168.321,521,200
2023-10-06$176.92$176.92459,600
2023-10-05$178.71$178.71549,900
2023-10-04$169.17$169.17658,100
2023-10-03$172.91$172.91642,300
2023-10-02$178.96$178.96629,600
2023-09-29$177.10$177.10754,100
2023-09-28$174.03$174.03362,000
2023-09-27$176.86$176.86511,700
2023-09-26$175.05$175.05576,600
2023-09-25$170.77$170.77530,100
2023-09-22$171.55$171.55678,900
2023-09-21$173.85$173.85685,000
2023-09-20$175.52$175.52565,300
2023-09-19$175.66$175.66687,800
2023-09-18$179.77$179.77731,000
2023-09-15$184.99$184.991,912,600
2023-09-14$193.06$193.062,105,900
2023-09-13$211.65$211.656,600
2023-09-12$211.65$211.65775,000
2023-09-11$203.72$203.72553,700
2023-09-08$201.43$201.43660,100
2023-09-07$201.10$201.10809,600
2023-09-06$201.45$201.45394,600
2023-09-05$200.34$200.34436,300
2023-09-01$201.17$201.17494,100
2023-08-31$197.82$197.82464,700
2023-08-30$197.16$197.16546,400
2023-08-29$194.46$194.46368,200
2023-08-28$191.66$191.66267,300
2023-08-25$189.26$189.26192,900
2023-08-24$186.77$186.77349,500
2023-08-23$190.38$190.38272,500
2023-08-22$189.38$189.38523,700
2023-08-21$188.73$188.73352,800
2023-08-18$186.03$186.03372,600
2023-08-17$183.89$183.89395,700
2023-08-16$182.43$182.43451,600
2023-08-15$180.13$180.13499,200
2023-08-14$181.35$181.351,122,900
2023-08-11$185.79$185.79358,800
2023-08-10$185.03$185.03368,400
2023-08-09$186.36$186.36394,100
2023-08-08$184.84$184.84488,400
2023-08-07$184.29$184.29451,500
2023-08-04$185.58$185.58567,900
2023-08-03$190.10$190.10674,500
2023-08-02$187.01$187.01631,500
2023-08-01$189.05$189.05507,300
2023-07-31$195.40$195.40406,300
2023-07-28$199.29$199.29341,600
2023-07-27$194.87$194.87853,900
2023-07-26$194.94$194.94459,700
2023-07-25$193.46$193.46685,800
2023-07-24$192.32$192.32770,600
2023-07-21$200.07$200.07305,100
2023-07-20$201.44$201.44440,400
2023-07-19$205.32$205.32428,500
2023-07-18$208.42$208.42599,700
2023-07-17$202.83$202.831,234,100
2023-07-14$197.10$197.10497,800
2023-07-13$203.88$203.88538,800
2023-07-12$201.90$201.90489,800
2023-07-11$202.15$202.15503,800
2023-07-10$199.81$199.81584,100
2023-07-07$192.68$192.68284,100
2023-07-06$194.39$194.39407,500
2023-07-05$192.57$192.57329,100
2023-07-03$189.69$189.69242,800
2023-06-30$189.94$189.94706,500
2023-06-29$191.06$191.06443,900
2023-06-28$196.56$196.56635,000
2023-06-27$188.80$188.801,381,300
2023-06-26$191.35$191.35407,900
2023-06-23$192.69$192.691,273,500
2023-06-22$199.07$199.07501,200
2023-06-21$203.90$203.90390,700
2023-06-20$201.60$201.60732,700
2023-06-16$201.57$201.57848,400
2023-06-15$202.34$202.34313,000
2023-06-14$198.49$198.49786,900
2023-06-13$197.54$197.54428,700
2023-06-12$193.09$193.09355,400
2023-06-09$190.83$190.83457,600
2023-06-08$190.43$190.43342,000
2023-06-07$190.17$190.17349,200
2023-06-06$192.96$192.96263,200
2023-06-05$192.30$192.30301,500
2023-06-02$193.67$193.67368,900
2023-06-01$188.67$188.67426,300
2023-05-31$185.01$185.01893,600
2023-05-30$186.46$186.46557,400
2023-05-26$188.26$188.26426,700
2023-05-25$186.00$186.00512,300
2023-05-24$185.92$185.92551,800
2023-05-23$191.83$191.83400,200
2023-05-22$193.06$193.06676,500
2023-05-19$190.74$190.74296,600
2023-05-18$189.87$189.87427,300
2023-05-17$193.23$193.23492,200
2023-05-16$190.97$190.971,539,700
2023-05-15$206.20$206.20371,100
2023-05-12$205.36$205.36359,300
2023-05-11$206.09$206.09293,000
2023-05-10$210.97$210.97619,100
2023-05-09$207.83$207.83594,000
2023-05-08$209.96$209.96559,700
2023-05-05$212.05$212.05768,100
2023-05-04$205.39$205.39936,900
2023-05-03$199.50$199.50699,500
2023-05-02$199.02$199.02651,100
2023-05-01$201.87$201.87627,000
2023-04-28$199.20$199.20607,300
2023-04-27$196.04$196.041,276,800
2023-04-26$197.52$197.52526,900
2023-04-25$202.15$202.15846,500
2023-04-24$204.79$204.79845,700
2023-04-21$209.28$209.28746,900
2023-04-20$202.86$202.86840,200
2023-04-19$202.30$202.301,318,600
2023-04-18$201.67$201.67972,900
2023-04-17$205.91$205.91474,400
2023-04-14$203.92$203.92686,800
2023-04-13$207.33$207.331,432,500
2023-04-12$202.89$202.89705,100
2023-04-11$202.81$202.81687,100
2023-04-10$205.44$205.44663,500
2023-04-06$210.99$210.991,194,700
2023-04-05$200.82$200.82615,600
2023-04-04$202.70$202.70435,000
2023-04-03$200.70$200.70837,900
2023-03-31$200.32$200.321,156,000
2023-03-30$195.12$195.12587,500
2023-03-29$195.91$195.91806,800
2023-03-28$188.55$188.551,304,900
2023-03-27$190.51$190.51938,400
2023-03-24$189.98$189.98351,500
2023-03-23$190.49$190.49458,500
2023-03-22$189.74$189.741,237,200
2023-03-21$190.43$190.43956,600
2023-03-20$187.52$187.52560,200
2023-03-17$185.45$185.45883,400
2023-03-16$189.66$189.66769,100
2023-03-15$185.75$185.75647,300
2023-03-14$187.10$187.101,121,000
2023-03-13$184.86$184.861,200,200
2023-03-10$182.66$182.661,002,500
2023-03-09$185.95$185.951,336,000
2023-03-08$190.41$190.41549,600
2023-03-07$194.34$194.34720,100
2023-03-06$199.70$199.70446,000
2023-03-03$202.58$202.58964,000
2023-03-02$194.44$194.44548,000
2023-03-01$195.40$195.40676,800
2023-02-28$191.45$191.451,388,400
2023-02-27$190.01$190.01801,000
2023-02-24$189.78$189.781,542,900
2023-02-23$196.24$196.241,454,700
2023-02-22$201.10$201.10909,500
2023-02-21$199.86$199.861,622,600
2023-02-17$222.79$222.79503,200
2023-02-16$219.85$219.85481,300
2023-02-15$222.10$222.10367,800
2023-02-14$224.91$224.91684,600
2023-02-13$222.34$222.34489,900
2023-02-10$215.26$215.26610,800
2023-02-09$215.58$215.58329,300
2023-02-08$217.75$217.75433,400
2023-02-07$220.95$220.95903,900
2023-02-06$224.14$224.14855,600
2023-02-03$233.37$233.371,206,100
2023-02-02$229.75$229.75908,200
2023-02-01$224.91$224.91750,900
2023-01-31$226.40$226.401,447,400
2023-01-30$225.40$225.40673,800
2023-01-27$231.37$231.37820,500
2023-01-26$231.59$231.59551,100
2023-01-25$229.02$229.02841,600
2023-01-24$228.11$228.11717,100
2023-01-23$230.59$230.59575,200
2023-01-20$229.65$229.65481,700
2023-01-19$228.56$228.56550,700
2023-01-18$231.81$231.81661,700
2023-01-17$233.73$233.731,040,900
2023-01-13$235.53$235.53983,900
2023-01-12$229.84$229.84471,700
2023-01-11$225.22$225.22836,900
2023-01-10$219.50$219.50466,200
2023-01-09$219.72$219.721,010,000
2023-01-06$225.00$225.00800,100
2023-01-05$225.68$225.68840,100
2023-01-04$232.86$232.86905,200
2023-01-03$233.59$233.59635,100