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Alnylam Pharmaceuticals, Inc. (ALNY)
NASDAQ: ALNY · Real-Time Price · USD
302.11
-6.40 (-2.07%)
At close: Apr 28, 2026, 4:00 PM EDT
303.28
+1.17 (0.39%)
After-hours: Apr 28, 2026, 4:31 PM EDT

Alnylam Pharmaceuticals Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Apr 28, 2026308.97314.17302.02302.25--2.03%727,874
Apr 27, 2026303.87314.74303.70308.51308.510.97%1,093,355
Apr 24, 2026309.63311.10302.90305.54305.54-2.63%817,025
Apr 23, 2026313.59315.83310.79313.79313.791.03%585,386
Apr 22, 2026308.43312.69307.85310.58310.580.70%1,003,575
Apr 21, 2026307.32310.50301.63308.43308.43-0.81%1,453,787
Apr 20, 2026306.56312.25305.00310.94310.940.41%911,222
Apr 17, 2026326.09326.53306.00309.66309.66-3.27%1,494,628
Apr 16, 2026333.39333.39318.93320.13320.13-3.98%953,507
Apr 15, 2026341.63342.23331.02333.39333.39-1.77%755,492
Apr 14, 2026330.81343.36330.54339.41339.411.92%1,176,074
Apr 13, 2026320.66333.56319.00333.00333.003.38%967,588
Apr 10, 2026323.49328.93317.53322.11322.110.26%698,623
Apr 9, 2026325.67326.90318.77321.28321.28-1.82%1,119,233
Apr 8, 2026327.49330.30324.44327.25327.252.42%1,024,695
Apr 7, 2026319.48322.35313.54319.52319.52-3.28%1,305,121
Apr 6, 2026320.10335.58320.10330.34330.343.60%1,276,806
Apr 2, 2026323.03325.49315.90318.85318.85-3.01%872,487
Apr 1, 2026332.69335.48327.59328.73328.73-0.65%673,304
Mar 31, 2026319.06332.48318.37330.87330.874.68%1,352,289
Mar 30, 2026319.32321.76314.21316.09316.09-0.40%1,223,904
Mar 27, 2026327.10329.69316.85317.36317.36-3.29%815,901
Mar 26, 2026328.90332.81327.69328.16328.16-0.16%1,119,781
Mar 25, 2026313.34329.48311.71328.70328.706.70%1,139,647
Mar 24, 2026303.42308.91299.62308.05308.050.45%1,497,337
Mar 23, 2026320.77323.23304.38306.66306.66-1.77%1,378,963
Mar 20, 2026311.05322.43311.05312.17312.170.34%2,050,765
Mar 19, 2026316.42317.61309.73311.10311.10-1.18%663,587
Mar 18, 2026317.50319.27312.58314.80314.80-1.75%1,077,650
Mar 17, 2026319.63326.96317.53320.42320.420.47%1,796,943
Mar 16, 2026311.22319.55311.22318.91318.911.75%1,247,482
Mar 13, 2026319.00319.50309.92313.41313.41-1.20%829,276
Mar 12, 2026320.53321.00309.61317.23317.23-1.00%1,247,315
Mar 11, 2026322.00323.71317.75320.43320.43-0.60%906,626
Mar 10, 2026325.60326.18317.03322.38322.38-0.37%1,169,417
Mar 9, 2026317.25323.68313.12323.59323.590.91%1,081,127
Mar 6, 2026317.73321.17312.09320.66320.660.05%996,497
Mar 5, 2026323.69328.28319.51320.51320.51-2.07%1,215,172
Mar 4, 2026319.20328.00317.25327.30327.302.71%931,151
Mar 3, 2026321.37324.06315.20318.65318.65-1.97%947,625
Mar 2, 2026329.41334.42323.16325.07325.07-2.36%1,302,332
Feb 27, 2026331.24334.80328.39332.92332.920.51%1,569,839
Feb 26, 2026328.67333.47322.00331.24331.241.19%880,311
Feb 25, 2026332.76334.42325.24327.36327.36-1.65%751,722
Feb 24, 2026328.22333.07324.48332.85332.851.06%791,573
Feb 23, 2026335.73341.39326.76329.35329.35-2.03%792,033
Feb 20, 2026336.58345.90335.83336.19336.19-0.94%1,375,285
Feb 19, 2026332.24339.61326.33339.37339.372.01%1,152,962
Feb 18, 2026328.86335.80324.53332.68332.680.02%1,151,205
Feb 17, 2026316.80336.21315.63332.61332.615.79%1,516,389
Feb 13, 2026302.55318.44302.55314.40314.401.92%1,476,326
Feb 12, 2026314.42315.51298.00308.48308.48-4.28%2,897,726
Feb 11, 2026322.14325.04317.80322.28322.28-0.22%1,582,249
Feb 10, 2026322.68325.98317.89322.98322.980.93%1,865,664
Feb 9, 2026325.49329.92319.26320.00320.00-2.49%1,392,019
Feb 6, 2026331.61340.07326.51328.16328.16-0.93%1,476,914
Feb 5, 2026350.50350.50327.27331.24331.24-5.89%2,620,979
Feb 4, 2026354.00355.49347.08351.96351.960.05%1,779,461
Feb 3, 2026338.49352.82337.59351.80351.803.74%2,152,860
Feb 2, 2026337.42342.33333.00339.11339.110.31%1,911,150
Jan 30, 2026343.10346.50336.39338.06338.06-2.52%1,648,568
Jan 29, 2026349.37350.34345.01346.79346.79-0.80%1,682,030
Jan 28, 2026353.66356.84348.00349.58349.58-1.46%1,099,190
Jan 27, 2026361.55368.07354.69354.75354.75-1.83%988,087
Jan 26, 2026357.98364.07352.50361.35361.350.94%936,370
Jan 23, 2026368.20371.33356.72357.98357.98-3.25%1,636,801
Jan 22, 2026365.50376.87363.36370.00370.001.24%1,875,372
Jan 21, 2026353.01366.00351.55365.46365.462.79%1,523,470
Jan 20, 2026350.70355.74347.77355.53355.53-1.04%1,722,679
Jan 16, 2026362.29367.20355.46359.27359.27-1,527,370
Jan 15, 2026368.54372.82356.83359.26359.26-2.07%911,176
Jan 14, 2026369.95371.71359.95366.86366.86-0.84%1,250,044
Jan 13, 2026369.10376.88366.92369.96369.96-0.26%1,625,677
Jan 12, 2026377.82378.61353.52370.91370.91-6.87%3,808,067
Jan 9, 2026399.40409.58392.56398.29398.29-0.28%1,440,224
Jan 8, 2026420.18425.19393.48399.40399.40-5.47%1,400,657
Jan 7, 2026405.51427.05405.51422.50422.503.96%1,426,278
Jan 6, 2026396.23409.18384.42406.40406.402.15%1,612,994
Jan 5, 2026397.57400.00383.84397.83397.83-0.58%1,093,965
Jan 2, 2026399.34407.22396.08400.17400.170.63%730,517
Dec 31, 2025397.25402.44397.25397.65397.650.10%768,860
Dec 30, 2025394.81398.40393.64397.25397.25-0.39%504,789
Dec 29, 2025400.10402.72397.05398.82398.82-0.44%638,375
Dec 26, 2025404.58404.58397.31400.59400.59-0.02%401,455
Dec 24, 2025395.99401.47395.05400.69400.690.50%408,233
Dec 23, 2025404.72407.43395.99398.70398.70-2.21%792,295
Dec 22, 2025409.60413.59403.20407.73407.731.87%1,052,983
Dec 19, 2025399.11408.15395.97400.23400.231.06%12,576,505
Dec 18, 2025394.49404.19391.51396.04396.041.00%1,714,954
Dec 17, 2025394.18400.24389.00392.10392.100.24%1,041,476
Dec 16, 2025390.65399.64388.54391.17391.17-0.08%1,345,516
Dec 15, 2025394.22402.33390.00391.50391.50-1.52%1,483,326
Dec 12, 2025408.86410.04387.03397.55397.55-3.65%1,659,227
Dec 11, 2025403.36414.22402.22412.63412.632.02%1,284,788
Dec 10, 2025416.54417.00403.80404.46404.46-2.59%1,188,960
Dec 9, 2025430.45433.31412.31415.21415.21-3.44%1,610,475
Dec 8, 2025447.00449.78423.45430.02430.02-6.13%2,411,635
Dec 5, 2025468.29473.50455.32458.12458.12-1.55%627,353
Dec 4, 2025472.67477.06463.03465.34465.34-1.68%983,982
Dec 3, 2025466.49479.79460.41473.29473.291.80%1,092,993