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Alnylam Pharmaceuticals, Inc. (ALNY)
NASDAQ: ALNY · Real-Time Price · USD
458.12
-7.22 (-1.55%)
At close: Dec 5, 2025, 4:00 PM EST
451.16
-6.96 (-1.52%)
After-hours: Dec 5, 2025, 7:40 PM EST

Alnylam Pharmaceuticals Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Dec 5, 2025468.29473.50455.32458.12458.12-1.55%621,475
Dec 4, 2025472.67477.06463.03465.34465.34-1.68%983,961
Dec 3, 2025466.49479.79460.41473.29473.291.80%1,076,170
Dec 2, 2025453.90472.48453.01464.93464.932.28%1,203,919
Dec 1, 2025450.00462.93448.27454.56454.560.74%1,070,637
Nov 28, 2025448.18455.76444.43451.23451.231.37%563,859
Nov 26, 2025432.87447.69430.27445.12445.123.56%908,163
Nov 25, 2025436.84441.82428.57429.80429.80-1.02%1,009,228
Nov 24, 2025439.46444.67420.30434.23434.23-0.49%1,750,352
Nov 21, 2025448.23449.53433.50436.38436.38-2.11%1,298,052
Nov 20, 2025463.32467.73445.34445.79445.79-3.25%787,662
Nov 19, 2025462.27465.32456.90460.76460.76-0.33%893,894
Nov 18, 2025458.15469.11456.27462.30462.300.38%668,666
Nov 17, 2025449.00463.92449.00460.54460.542.53%962,080
Nov 14, 2025453.87461.96448.28449.16449.16-1.06%968,547
Nov 13, 2025450.67456.14447.12453.97453.970.27%798,910
Nov 12, 2025450.63459.27446.71452.74452.740.17%937,690
Nov 11, 2025443.53455.20441.21451.95451.952.32%981,717
Nov 10, 2025445.00449.68440.93441.70441.70-0.23%739,044
Nov 7, 2025437.81443.69430.84442.70442.700.50%822,669
Nov 6, 2025431.78445.50429.00440.49440.491.36%700,509
Nov 5, 2025422.11438.53417.00434.56434.562.62%974,550
Nov 4, 2025429.90431.50421.83423.47423.47-2.44%1,170,232
Nov 3, 2025454.58457.26429.60434.07434.07-4.82%1,556,549
Oct 31, 2025449.00459.77441.22456.04456.041.44%1,817,670
Oct 30, 2025450.00472.36436.51449.56449.56-6.65%2,313,994
Oct 29, 2025475.19482.73467.09481.59481.591.19%1,360,223
Oct 28, 2025476.50484.61473.29475.91475.91-0.56%836,305
Oct 27, 2025465.56485.36465.55478.58478.583.27%1,174,680
Oct 24, 2025468.68469.29459.38463.43463.43-0.12%771,302
Oct 23, 2025464.71468.86456.90464.00464.00-0.19%683,376
Oct 22, 2025477.66480.53461.21464.90464.90-1.92%950,023
Oct 21, 2025488.42490.05471.40474.00474.00-3.51%826,254
Oct 20, 2025476.82495.55476.82491.22491.221.98%950,011
Oct 17, 2025481.65492.62476.44481.67481.670.12%1,029,195
Oct 16, 2025474.39488.39470.46481.07481.072.30%964,728
Oct 15, 2025469.19485.28467.50470.27470.270.19%1,475,359
Oct 14, 2025462.13479.69457.73469.36469.360.95%1,435,825
Oct 13, 2025456.13473.65453.83464.95464.950.98%1,579,240
Oct 10, 2025460.28460.60451.00460.46460.460.77%937,064
Oct 9, 2025451.00459.57448.83456.95456.951.39%1,051,960
Oct 8, 2025464.46464.46449.72450.68450.68-1.94%929,883
Oct 7, 2025456.94462.63448.95459.58459.581.68%791,895
Oct 6, 2025458.69458.69449.92452.00452.00-0.95%918,501
Oct 3, 2025465.01465.01448.47456.35456.35-1.01%969,089
Oct 2, 2025457.64461.53446.18460.99460.990.07%1,269,237
Oct 1, 2025456.00467.42453.31460.65460.651.02%1,370,050
Sep 30, 2025445.22459.30445.22456.00456.001.90%1,379,551
Sep 29, 2025448.00451.63446.30447.49447.490.24%719,079
Sep 26, 2025453.05453.05442.51446.40446.40-0.71%812,999
Sep 25, 2025457.03459.00446.42449.58449.58-1.92%685,313
Sep 24, 2025454.35462.69450.97458.37458.370.87%975,991
Sep 23, 2025452.83457.47450.50454.41454.41-0.98%1,024,608
Sep 22, 2025453.56462.88450.23458.92458.921.18%971,763
Sep 19, 2025457.68457.68450.72453.56453.560.31%1,713,315
Sep 18, 2025454.00456.94443.75452.17452.170.10%1,061,008
Sep 17, 2025455.76463.88450.70451.73451.73-2.06%1,445,600
Sep 16, 2025465.14467.28457.99461.24461.240.02%773,501
Sep 15, 2025464.80466.24454.51461.14461.14-1.02%910,067
Sep 12, 2025468.29475.69465.48465.89465.89-0.57%630,781
Sep 11, 2025474.34474.34465.16468.58468.58-0.16%1,005,306
Sep 10, 2025478.50480.05461.47469.31469.31-2.66%1,817,375
Sep 9, 2025461.12484.21455.30482.13482.135.96%3,217,762
Sep 8, 2025457.31463.00452.85455.03455.030.67%925,993
Sep 5, 2025453.45455.28444.66452.00452.00-0.34%751,500
Sep 4, 2025449.43458.30447.11453.54453.541.37%714,264
Sep 3, 2025444.77456.18442.73447.43447.430.10%1,301,079
Sep 2, 2025445.84454.50441.50447.00447.000.11%1,072,194
Aug 29, 2025452.22453.96444.79446.51446.51-1.29%827,614
Aug 28, 2025452.01457.29451.12452.33452.33-0.41%641,007
Aug 27, 2025449.05455.45447.63454.18454.180.66%906,745
Aug 26, 2025451.50451.50444.25451.20451.201.70%1,183,717
Aug 25, 2025453.37458.75442.38443.64443.64-2.36%1,200,028
Aug 22, 2025469.17469.81454.20454.38454.38-2.82%1,075,672
Aug 21, 2025459.62467.71454.68467.55467.552.02%760,122
Aug 20, 2025459.34466.31456.06458.31458.310.01%1,223,522
Aug 19, 2025457.00462.88450.88458.28458.280.31%1,322,098
Aug 18, 2025450.00457.92447.10456.87456.871.77%1,608,844
Aug 15, 2025440.66449.52438.22448.91448.911.40%713,356
Aug 14, 2025433.59443.98428.99442.73442.732.36%1,263,485
Aug 13, 2025428.43438.23421.81432.52432.520.60%2,094,449
Aug 12, 2025434.58437.00428.30429.93429.93-1.17%1,508,236
Aug 11, 2025433.65445.20426.19435.00435.00-0.90%988,644
Aug 8, 2025435.10439.36427.66438.93438.930.88%901,275
Aug 7, 2025429.33436.77425.81435.10435.101.63%1,152,674
Aug 6, 2025418.76428.69415.00428.14428.142.20%1,181,810
Aug 5, 2025416.64426.76410.49418.91418.91-0.15%1,807,615
Aug 4, 2025406.65422.64398.91419.56419.564.42%1,455,503
Aug 1, 2025388.68401.80382.19401.80401.802.44%1,781,357
Jul 31, 2025350.00402.43350.00392.24392.2415.43%3,353,586
Jul 30, 2025335.00345.98333.03339.80339.802.80%2,058,263
Jul 29, 2025328.92331.06323.74330.55330.551.77%862,482
Jul 28, 2025329.00331.43324.78324.79324.79-1.22%1,032,041
Jul 25, 2025331.50331.50324.55328.81328.810.25%666,676
Jul 24, 2025326.35332.19324.30328.00328.000.72%677,122
Jul 23, 2025325.28329.34322.30325.64325.640.11%912,188
Jul 22, 2025321.57326.30320.18325.28325.281.49%1,273,708
Jul 21, 2025324.98328.70320.26320.52320.52-744,530
Jul 18, 2025325.62325.62317.88320.53320.53-1.28%581,322
Jul 17, 2025321.20329.87321.06324.69324.690.58%744,566