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 — 2015

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2015-12-31$94.14$94.14289,800
2015-12-30$94.51$94.51387,700
2015-12-29$93.98$93.98310,400
2015-12-28$91.68$91.68404,400
2015-12-24$90.68$90.68163,800
2015-12-23$91.34$91.34567,800
2015-12-22$86.52$86.52496,500
2015-12-21$88.01$88.01482,700
2015-12-18$88.95$88.951,491,900
2015-12-17$88.18$88.18577,400
2015-12-16$91.97$91.97483,600
2015-12-15$88.50$88.50645,100
2015-12-14$88.33$88.331,157,200
2015-12-11$89.68$89.681,273,400
2015-12-10$96.20$96.202,507,300
2015-12-09$100.58$100.581,014,000
2015-12-08$101.03$101.03735,700
2015-12-07$97.72$97.722,180,300
2015-12-04$108.96$108.96666,300
2015-12-03$105.92$105.92815,200
2015-12-02$103.61$103.61504,000
2015-12-01$105.98$105.98601,900
2015-11-30$104.06$104.06665,100
2015-11-27$107.38$107.38177,800
2015-11-25$105.25$105.25356,700
2015-11-24$104.76$104.76317,800
2015-11-23$104.53$104.53433,700
2015-11-20$102.61$102.61516,700
2015-11-19$102.86$102.86524,900
2015-11-18$107.00$107.00668,500
2015-11-17$103.84$103.84651,900
2015-11-16$101.36$101.36716,100
2015-11-13$102.57$102.57756,500
2015-11-12$98.94$98.94944,800
2015-11-11$104.29$104.29754,200
2015-11-10$107.24$107.24952,300
2015-11-09$108.84$108.841,287,100
2015-11-06$101.53$101.53859,800
2015-11-05$98.77$98.77905,300
2015-11-04$98.08$98.081,154,400
2015-11-03$93.48$93.481,330,200
2015-11-02$93.07$93.071,074,900
2015-10-30$85.95$85.95646,000
2015-10-29$88.15$88.15868,500
2015-10-28$90.58$90.581,775,100
2015-10-27$83.46$83.46774,300
2015-10-26$80.31$80.31861,800
2015-10-23$79.71$79.711,052,100
2015-10-22$75.37$75.371,079,200
2015-10-21$75.02$75.021,629,500
2015-10-20$77.62$77.62990,500
2015-10-19$84.42$84.42911,100
2015-10-16$84.91$84.911,364,900
2015-10-15$85.48$85.48941,000
2015-10-14$79.46$79.46661,100
2015-10-13$79.06$79.06849,700
2015-10-12$82.39$82.39599,400
2015-10-09$83.16$83.16974,600
2015-10-08$82.28$82.28955,000
2015-10-07$80.71$80.711,107,400
2015-10-06$76.02$76.021,615,900
2015-10-05$80.23$80.231,553,200
2015-10-02$83.02$83.021,527,600
2015-10-01$79.65$79.651,379,700
2015-09-30$80.36$80.361,730,500
2015-09-29$77.40$77.401,660,000
2015-09-28$79.85$79.851,842,000
2015-09-25$83.72$83.721,667,900
2015-09-24$90.77$90.77900,300
2015-09-23$93.30$93.30934,800
2015-09-22$97.31$97.31902,400
2015-09-21$98.50$98.50947,400
2015-09-18$107.85$107.851,723,300
2015-09-17$108.48$108.48497,100
2015-09-16$106.85$106.85428,700
2015-09-15$107.75$107.75386,800
2015-09-14$107.75$107.75552,000
2015-09-11$107.70$107.70465,900
2015-09-10$105.76$105.76863,100
2015-09-09$100.91$100.91626,200
2015-09-08$104.75$104.75951,900
2015-09-04$97.80$97.80432,000
2015-09-03$97.25$97.25705,200
2015-09-02$101.62$101.62760,300
2015-09-01$97.90$97.90896,600
2015-08-31$102.91$102.911,675,900
2015-08-28$109.07$109.07723,200
2015-08-27$104.90$104.90740,400
2015-08-26$102.25$102.25903,600
2015-08-25$95.72$95.72771,000
2015-08-24$92.80$92.801,139,000
2015-08-21$99.85$99.85789,900
2015-08-20$101.95$101.951,015,800
2015-08-19$109.02$109.02551,200
2015-08-18$109.77$109.77700,400
2015-08-17$111.45$111.45617,700
2015-08-14$105.74$105.74609,100
2015-08-13$105.05$105.05417,300
2015-08-12$108.48$108.48774,300
2015-08-11$106.32$106.32723,000
2015-08-10$105.67$105.671,207,500
2015-08-07$106.19$106.192,889,600
2015-08-06$119.87$119.87515,100
2015-08-05$127.73$127.73408,600
2015-08-04$125.88$125.88430,000
2015-08-03$126.22$126.22496,600
2015-07-31$127.43$127.43414,300
2015-07-30$125.46$125.46580,900
2015-07-29$130.09$130.09458,300
2015-07-28$129.76$129.76475,200
2015-07-27$128.82$128.82753,600
2015-07-24$129.62$129.62625,200
2015-07-23$133.49$133.49409,900
2015-07-22$133.33$133.33699,900
2015-07-21$133.37$133.37631,200
2015-07-20$133.87$133.87452,700
2015-07-17$136.55$136.55748,600
2015-07-16$133.40$133.40855,300
2015-07-15$126.34$126.34438,200
2015-07-14$128.93$128.93631,000
2015-07-13$125.64$125.64742,700
2015-07-10$121.77$121.77556,100
2015-07-09$116.04$116.04648,800
2015-07-08$112.73$112.73659,700
2015-07-07$119.53$119.53574,500
2015-07-06$118.70$118.70717,200
2015-07-02$117.84$117.84460,600
2015-07-01$117.57$117.57725,700
2015-06-30$119.87$119.87773,600
2015-06-29$114.21$114.21934,600
2015-06-26$117.67$117.671,409,000
2015-06-25$123.11$123.11706,500
2015-06-24$123.66$123.661,068,900
2015-06-23$131.43$131.431,182,200
2015-06-22$138.73$138.73564,300
2015-06-19$136.36$136.362,310,000
2015-06-18$134.46$134.46691,400
2015-06-17$128.95$128.95360,700
2015-06-16$127.92$127.92576,200
2015-06-15$129.75$129.75648,600
2015-06-12$130.28$130.28890,400
2015-06-11$132.74$132.74560,200
2015-06-10$128.79$128.79417,500
2015-06-09$127.58$127.58592,800
2015-06-08$129.97$129.97687,200
2015-06-05$131.35$131.35502,200
2015-06-04$129.00$129.00581,200
2015-06-03$128.84$128.84756,600
2015-06-02$131.32$131.32967,400
2015-06-01$131.21$131.21673,800
2015-05-29$131.09$131.093,431,300
2015-05-28$128.50$128.50725,600
2015-05-27$130.62$130.62829,000
2015-05-26$127.87$127.871,363,200
2015-05-22$124.81$124.81378,200
2015-05-21$124.88$124.88589,100
2015-05-20$123.95$123.951,115,600
2015-05-19$117.33$117.33679,000
2015-05-18$121.62$121.62715,100
2015-05-15$119.84$119.84814,400
2015-05-14$115.87$115.87555,700
2015-05-13$114.39$114.39693,900
2015-05-12$113.81$113.81837,800
2015-05-11$113.51$113.51580,000
2015-05-08$112.79$112.791,133,100
2015-05-07$106.63$106.63822,600
2015-05-06$105.71$105.71627,800
2015-05-05$104.03$104.03751,300
2015-05-04$107.16$107.16684,400
2015-05-01$106.89$106.89786,400
2015-04-30$101.87$101.87855,600
2015-04-29$104.01$104.01608,200
2015-04-28$104.69$104.691,013,600
2015-04-27$108.43$108.43864,900
2015-04-24$119.01$119.01322,900
2015-04-23$118.72$118.72744,500
2015-04-22$118.00$118.001,093,500
2015-04-21$120.70$120.701,367,000
2015-04-20$118.68$118.68460,800
2015-04-17$116.98$116.98835,700
2015-04-16$121.37$121.37478,800
2015-04-15$120.00$120.00686,900
2015-04-14$116.67$116.67655,300
2015-04-13$115.24$115.24567,200
2015-04-10$114.22$114.22726,300
2015-04-09$107.80$107.80651,800
2015-04-08$106.50$106.50571,600
2015-04-07$104.05$104.05402,600
2015-04-06$103.69$103.69579,400
2015-04-02$104.41$104.41539,200
2015-04-01$105.26$105.26828,700
2015-03-31$104.42$104.42669,700
2015-03-30$107.78$107.78741,500
2015-03-27$104.06$104.06850,100
2015-03-26$99.64$99.64768,500
2015-03-25$101.78$101.78787,100
2015-03-24$110.06$110.06644,900
2015-03-23$111.49$111.49894,600
2015-03-20$117.46$117.461,209,800
2015-03-19$119.70$119.70805,100
2015-03-18$112.80$112.801,045,100
2015-03-17$116.29$116.29765,200
2015-03-16$115.94$115.94483,700
2015-03-13$113.57$113.57347,600
2015-03-12$113.90$113.90519,300
2015-03-11$113.60$113.60641,300
2015-03-10$109.75$109.75626,300
2015-03-09$106.95$106.95581,900
2015-03-06$107.67$107.67448,200
2015-03-05$111.56$111.56927,300
2015-03-04$107.23$107.23632,000
2015-03-03$106.91$106.91437,600
2015-03-02$105.40$105.40442,700
2015-02-27$101.53$101.53574,200
2015-02-26$104.39$104.39403,000
2015-02-25$106.66$106.66701,200
2015-02-24$105.23$105.23601,000
2015-02-23$104.10$104.10753,000
2015-02-20$102.39$102.39499,400
2015-02-19$98.94$98.94461,000
2015-02-18$97.21$97.21519,300
2015-02-17$96.68$96.68492,300
2015-02-13$95.54$95.54495,100
2015-02-12$93.87$93.87598,300
2015-02-11$93.41$93.41617,700
2015-02-10$93.01$93.01706,200
2015-02-09$87.80$87.80276,400
2015-02-06$89.10$89.10455,800
2015-02-05$91.15$91.15607,300
2015-02-04$85.57$85.57775,700
2015-02-03$88.85$88.85919,500
2015-02-02$92.26$92.26631,700
2015-01-30$93.83$93.831,026,100
2015-01-29$93.43$93.431,008,800
2015-01-28$90.88$90.88870,800
2015-01-27$95.50$95.50676,100
2015-01-26$95.21$95.21861,800
2015-01-23$93.42$93.42698,700
2015-01-22$93.17$93.172,415,900
2015-01-21$87.36$87.365,035,400
2015-01-20$96.25$96.25783,200
2015-01-16$100.77$100.77512,700
2015-01-15$98.64$98.64496,100
2015-01-14$103.55$103.55421,300
2015-01-13$104.97$104.97689,700
2015-01-12$103.78$103.78773,500
2015-01-09$101.30$101.30625,500
2015-01-08$101.70$101.70800,800
2015-01-07$94.86$94.86601,400
2015-01-06$94.02$94.02913,100
2015-01-05$95.38$95.38615,700
2015-01-02$97.77$97.77380,900