Alnylam Pharmaceuticals, Inc. (ALNY) stock
ALNYNasdaqPharmaceutical PreparationsFiscal year ends December 31
$165.00−9.00 (-5.17%)
Close on Oct 30, 2026Market cap $22.08BP/E –Yield –
Price history
Alnylam Pharmaceuticals share prices for every trading day, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 30, 2026
$165.00
-5.17% on the day
52-week range
$163.30 – $479.79
-65.6% from the high
Change over 52 weeks
-63.3%
From $449.56 on Oct 30, 2025
Average volume
1.87M
Shares a day, last 90 sessions
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | $172.70 | $180.61 | $163.30 | $165.00 | -5.17% | 7,056,827 |
| Oct 29, 2026 | $185.59 | $202.37 | $172.31 | $174.00 | -25.13% | 11,802,860 |
| Oct 28, 2026 | $222.72 | $232.88 | $220.00 | $232.40 | +2.47% | 1,944,031 |
| Oct 27, 2026 | $225.00 | $228.49 | $222.82 | $226.79 | -0.38% | 1,603,484 |
| Oct 26, 2026 | $226.24 | $232.48 | $224.10 | $227.66 | +1.62% | 1,436,998 |
| Oct 23, 2026 | $227.28 | $229.39 | $222.00 | $224.03 | -1.43% | 1,055,960 |
| Oct 22, 2026 | $224.92 | $229.82 | $223.76 | $227.28 | +0.97% | 2,212,201 |
| Oct 21, 2026 | $227.86 | $230.84 | $224.88 | $225.10 | -2.43% | 1,181,021 |
| Oct 20, 2026 | $237.73 | $238.96 | $229.54 | $230.71 | -1.11% | 1,505,185 |
| Oct 19, 2026 | $232.65 | $236.54 | $231.26 | $233.29 | +0.63% | 1,344,122 |
| Oct 16, 2026 | $235.18 | $237.98 | $231.29 | $231.83 | -0.94% | 1,404,860 |
| Oct 15, 2026 | $230.00 | $234.30 | $228.12 | $234.03 | +4.26% | 1,257,474 |
| Oct 14, 2026 | $224.49 | $229.56 | $222.25 | $224.47 | +0.29% | 1,105,653 |
| Oct 13, 2026 | $228.93 | $229.53 | $221.56 | $223.82 | -1.41% | 1,119,026 |
| Oct 12, 2026 | $233.13 | $233.60 | $226.35 | $227.02 | -2.43% | 916,918 |
| Oct 9, 2026 | $224.74 | $232.94 | $222.71 | $232.68 | +3.63% | 959,450 |
| Oct 8, 2026 | $222.03 | $225.90 | $218.39 | $224.53 | +0.05% | 1,771,700 |
| Oct 7, 2026 | $224.39 | $230.42 | $222.46 | $224.41 | +0.21% | 1,064,112 |
| Oct 6, 2026 | $221.02 | $229.18 | $217.18 | $223.94 | +1.84% | 1,356,362 |
| Oct 5, 2026 | $218.36 | $222.08 | $215.46 | $219.89 | +0.08% | 1,281,104 |
| Oct 2, 2026 | $231.31 | $231.36 | $219.40 | $219.72 | -4.96% | 1,661,854 |
| Oct 1, 2026 | $248.21 | $251.71 | $230.06 | $231.18 | -6.31% | 2,017,406 |
| Sep 30, 2026 | $253.68 | $254.44 | $246.66 | $246.74 | -2.89% | 1,044,414 |
| Sep 29, 2026 | $254.86 | $257.27 | $251.02 | $254.07 | -0.51% | 787,081 |
| Sep 28, 2026 | $256.28 | $256.60 | $248.12 | $255.36 | -0.23% | 1,147,872 |
| Sep 25, 2026 | $248.39 | $256.66 | $247.51 | $255.96 | +2.55% | 1,084,529 |
| Sep 24, 2026 | $246.51 | $251.81 | $245.52 | $249.59 | +1.25% | 933,737 |
| Sep 23, 2026 | $249.99 | $253.81 | $245.34 | $246.51 | -2.04% | 1,481,713 |
| Sep 22, 2026 | $246.86 | $255.51 | $244.13 | $251.65 | +3.00% | 1,131,952 |
| Sep 21, 2026 | $240.37 | $247.10 | $237.97 | $244.32 | +1.99% | 1,152,874 |
| Sep 18, 2026 | $246.41 | $246.49 | $238.51 | $239.56 | -2.42% | 2,756,178 |
| Sep 17, 2026 | $242.60 | $245.63 | $239.50 | $245.51 | +2.57% | 1,006,573 |
| Sep 16, 2026 | $239.50 | $242.24 | $236.00 | $239.36 | +0.46% | 853,903 |
| Sep 15, 2026 | $246.99 | $247.43 | $237.44 | $238.27 | -4.69% | 2,175,150 |
| Sep 14, 2026 | $250.17 | $252.79 | $244.18 | $249.99 | +0.53% | 997,229 |
| Sep 11, 2026 | $248.05 | $254.08 | $246.01 | $248.68 | +0.47% | 1,177,421 |
| Sep 10, 2026 | $256.68 | $256.68 | $246.42 | $247.51 | -4.07% | 1,626,331 |
| Sep 9, 2026 | $257.07 | $261.98 | $253.28 | $258.00 | -0.81% | 1,426,414 |
| Sep 8, 2026 | $259.00 | $272.08 | $254.01 | $260.10 | -2.26% | 2,008,633 |
| Sep 4, 2026 | $258.58 | $266.85 | $258.02 | $266.11 | +0.61% | 1,431,221 |
| Sep 3, 2026 | $265.94 | $271.19 | $261.54 | $264.50 | -1.08% | 1,710,078 |
| Sep 2, 2026 | $246.48 | $269.94 | $246.48 | $267.40 | +8.65% | 3,286,329 |
| Sep 1, 2026 | $242.40 | $248.13 | $238.00 | $246.11 | +2.25% | 1,941,271 |
| Aug 31, 2026 | $235.94 | $243.02 | $233.33 | $240.69 | +1.51% | 1,636,349 |
| Aug 28, 2026 | $224.47 | $239.08 | $223.61 | $237.10 | +0.23% | 1,847,139 |
| Aug 27, 2026 | $236.56 | $238.00 | $230.46 | $236.56 | -1.02% | 1,293,542 |
| Aug 26, 2026 | $238.54 | $242.89 | $236.60 | $239.00 | -0.45% | 1,116,266 |
| Aug 25, 2026 | $236.56 | $240.67 | $235.41 | $240.08 | +1.72% | 1,576,352 |
| Aug 24, 2026 | $235.83 | $237.91 | $228.59 | $236.01 | -0.09% | 2,137,241 |
| Aug 21, 2026 | $228.88 | $238.97 | $228.34 | $236.22 | +3.02% | 1,906,404 |
| Aug 20, 2026 | $239.00 | $240.88 | $228.74 | $229.30 | -5.49% | 1,701,704 |
| Aug 19, 2026 | $234.36 | $244.03 | $233.40 | $242.61 | +6.12% | 1,879,215 |
| Aug 18, 2026 | $226.27 | $230.91 | $222.01 | $228.61 | +1.79% | 1,600,400 |
| Aug 17, 2026 | $225.76 | $227.99 | $222.12 | $224.60 | -1.77% | 1,539,238 |
| Aug 14, 2026 | $223.52 | $228.98 | $220.23 | $228.65 | +0.67% | 1,525,934 |
| Aug 13, 2026 | $225.95 | $227.54 | $222.70 | $227.12 | +1.42% | 1,449,424 |
| Aug 12, 2026 | $219.00 | $224.66 | $219.00 | $223.95 | +1.24% | 1,621,305 |
| Aug 11, 2026 | $217.41 | $223.44 | $216.50 | $221.20 | +1.94% | 1,438,183 |
| Aug 10, 2026 | $218.00 | $223.50 | $215.61 | $216.98 | -1.01% | 1,404,831 |
| Aug 7, 2026 | $217.31 | $219.64 | $210.49 | $219.20 | +1.43% | 1,735,992 |
| Aug 6, 2026 | $228.58 | $234.00 | $212.98 | $216.12 | -5.51% | 2,274,559 |
| Aug 5, 2026 | $221.74 | $229.65 | $221.50 | $228.72 | +4.44% | 2,734,599 |
| Aug 4, 2026 | $220.33 | $222.59 | $215.07 | $219.00 | -0.60% | 3,107,854 |
| Aug 3, 2026 | $208.04 | $220.49 | $208.04 | $220.33 | +7.21% | 3,400,184 |
| Jul 31, 2026 | $205.46 | $207.99 | $200.11 | $205.52 | +0.02% | 4,477,567 |
| Jul 30, 2026 | $225.02 | $230.00 | $197.81 | $205.48 | -28.31% | 9,835,843 |
| Jul 29, 2026 | $288.09 | $290.60 | $284.15 | $286.62 | -0.62% | 1,301,501 |
| Jul 28, 2026 | $282.79 | $290.47 | $281.23 | $288.41 | +3.60% | 1,437,745 |
| Jul 27, 2026 | $272.66 | $284.68 | $272.66 | $278.40 | +2.44% | 1,409,631 |
| Jul 24, 2026 | $268.74 | $275.58 | $265.64 | $271.77 | +1.13% | 1,151,029 |
| Jul 23, 2026 | $265.95 | $269.22 | $262.21 | $268.74 | +0.66% | 1,140,798 |
| Jul 22, 2026 | $270.84 | $273.72 | $264.21 | $266.99 | -1.61% | 1,104,662 |
| Jul 21, 2026 | $272.40 | $278.30 | $270.01 | $271.37 | -0.48% | 982,811 |
| Jul 20, 2026 | $267.55 | $275.25 | $266.27 | $272.67 | +1.94% | 1,359,742 |
| Jul 17, 2026 | $280.99 | $284.36 | $266.43 | $267.47 | -5.54% | 1,378,518 |
| Jul 16, 2026 | $279.65 | $286.60 | $273.78 | $283.15 | +1.44% | 1,436,413 |
| Jul 15, 2026 | $281.70 | $284.80 | $275.84 | $279.14 | -0.75% | 1,284,941 |
| Jul 14, 2026 | $283.55 | $286.76 | $279.43 | $281.26 | -2.36% | 1,093,297 |
| Jul 13, 2026 | $298.01 | $298.76 | $279.41 | $288.06 | -3.58% | 2,682,652 |
| Jul 10, 2026 | $314.71 | $322.49 | $293.78 | $298.76 | -4.49% | 2,538,292 |
| Jul 9, 2026 | $378.49 | $380.00 | $311.10 | $312.79 | -3.31% | 5,864,993 |
| Jul 8, 2026 | $318.50 | $325.37 | $316.78 | $323.50 | +0.59% | 897,702 |
| Jul 7, 2026 | $317.07 | $321.98 | $315.35 | $321.59 | +2.73% | 980,502 |
| Jul 6, 2026 | $319.34 | $319.34 | $307.13 | $313.04 | +0.08% | 891,867 |
| Jul 2, 2026 | $303.87 | $317.17 | $303.00 | $312.78 | +3.68% | 1,093,526 |
| Jul 1, 2026 | $304.54 | $309.28 | $301.50 | $301.67 | +0.21% | 1,070,648 |
| Jun 30, 2026 | $296.82 | $302.74 | $295.18 | $301.03 | +2.56% | 1,411,543 |
| Jun 29, 2026 | $296.97 | $298.28 | $291.90 | $293.52 | +0.74% | 1,367,343 |
| Jun 26, 2026 | $297.57 | $302.96 | $290.37 | $291.37 | -0.61% | 1,490,610 |
| Jun 25, 2026 | $293.68 | $298.35 | $290.07 | $293.17 | -0.30% | 1,128,203 |
| Jun 24, 2026 | $290.95 | $303.46 | $288.85 | $294.06 | +2.04% | 1,299,635 |
| Jun 23, 2026 | $290.89 | $291.95 | $285.26 | $288.18 | +0.62% | 1,087,832 |
| Jun 22, 2026 | $278.42 | $286.67 | $278.17 | $286.41 | +2.99% | 1,420,699 |
| Jun 18, 2026 | $280.11 | $282.98 | $273.11 | $278.09 | -1.64% | 2,204,703 |
| Jun 17, 2026 | $281.31 | $288.00 | $277.78 | $282.72 | +0.29% | 1,322,216 |
| Jun 16, 2026 | $288.13 | $288.48 | $276.94 | $281.90 | -2.05% | 1,213,288 |
| Jun 15, 2026 | $282.92 | $288.11 | $281.36 | $287.80 | +1.75% | 1,118,586 |
| Jun 12, 2026 | $288.96 | $291.28 | $281.77 | $282.85 | -2.26% | 1,420,050 |
| Jun 11, 2026 | $290.70 | $292.98 | $285.22 | $289.39 | -0.63% | 1,061,496 |
| Jun 10, 2026 | $297.69 | $299.70 | $290.53 | $291.22 | -2.17% | 927,374 |
| Jun 9, 2026 | $297.31 | $302.85 | $293.97 | $297.69 | +1.89% | 1,260,043 |
| Jun 8, 2026 | $303.11 | $303.57 | $285.54 | $292.16 | -3.59% | 1,651,435 |
| Jun 5, 2026 | $306.34 | $306.73 | $300.50 | $303.05 | -0.19% | 1,004,445 |
| Jun 4, 2026 | $297.22 | $310.53 | $293.85 | $303.64 | +3.78% | 1,081,496 |
| Jun 3, 2026 | $284.48 | $293.16 | $283.10 | $292.58 | +2.26% | 988,833 |
| Jun 2, 2026 | $293.94 | $295.60 | $285.00 | $286.12 | -3.22% | 1,042,633 |
| Jun 1, 2026 | $299.51 | $303.98 | $295.13 | $295.63 | -2.10% | 1,186,174 |
| May 29, 2026 | $302.43 | $305.68 | $297.62 | $301.98 | -1.01% | 2,278,069 |
| May 28, 2026 | $293.00 | $305.98 | $291.84 | $305.06 | +3.19% | 1,020,772 |
| May 27, 2026 | $293.40 | $299.98 | $292.91 | $295.63 | +0.04% | 629,519 |
| May 26, 2026 | $299.00 | $301.09 | $294.26 | $295.50 | -0.66% | 649,732 |
| May 22, 2026 | $299.12 | $303.33 | $294.99 | $297.45 | -1.02% | 681,308 |
| May 21, 2026 | $296.64 | $301.43 | $293.00 | $300.51 | +0.68% | 650,366 |
| May 20, 2026 | $297.80 | $300.08 | $292.10 | $298.48 | +1.42% | 799,240 |
| May 19, 2026 | $289.00 | $294.93 | $284.38 | $294.30 | +2.81% | 770,339 |
| May 18, 2026 | $287.14 | $291.97 | $285.26 | $286.27 | -0.25% | 873,361 |
| May 15, 2026 | $294.78 | $298.00 | $286.76 | $286.98 | -2.20% | 1,149,640 |
| May 14, 2026 | $290.72 | $297.00 | $287.51 | $293.45 | +0.68% | 889,670 |
| May 13, 2026 | $290.70 | $298.38 | $288.56 | $291.48 | -0.19% | 975,853 |
| May 12, 2026 | $288.66 | $295.86 | $286.73 | $292.03 | +2.52% | 826,171 |
| May 11, 2026 | $294.15 | $296.37 | $284.28 | $284.84 | -3.46% | 1,287,797 |
| May 8, 2026 | $295.91 | $300.17 | $293.06 | $295.05 | -0.29% | 926,772 |
| May 7, 2026 | $300.55 | $303.46 | $293.78 | $295.91 | -2.34% | 1,144,021 |
| May 6, 2026 | $301.57 | $306.03 | $298.96 | $303.00 | +0.63% | 1,012,334 |
| May 5, 2026 | $297.81 | $302.67 | $295.02 | $301.11 | +1.07% | 823,895 |
| May 4, 2026 | $298.00 | $300.49 | $288.06 | $297.93 | +0.61% | 1,590,519 |
| May 1, 2026 | $308.76 | $311.88 | $295.79 | $296.11 | -4.32% | 1,132,872 |
| Apr 30, 2026 | $307.48 | $317.56 | $287.00 | $309.49 | +2.76% | 2,192,132 |
| Apr 29, 2026 | $300.48 | $304.22 | $294.06 | $301.19 | -0.30% | 1,569,856 |
| Apr 28, 2026 | $308.97 | $314.17 | $301.80 | $302.11 | -2.07% | 996,287 |
| Apr 27, 2026 | $303.87 | $314.74 | $303.70 | $308.51 | +0.97% | 1,093,464 |
| Apr 24, 2026 | $309.63 | $311.10 | $302.90 | $305.54 | -2.63% | 825,633 |
| Apr 23, 2026 | $313.59 | $315.83 | $310.79 | $313.79 | +1.03% | 588,284 |
| Apr 22, 2026 | $308.43 | $312.69 | $307.85 | $310.58 | +0.70% | 1,003,730 |
| Apr 21, 2026 | $307.32 | $310.50 | $301.63 | $308.43 | -0.81% | 1,510,856 |
| Apr 20, 2026 | $306.56 | $312.25 | $305.00 | $310.94 | +0.41% | 966,541 |
| Apr 17, 2026 | $326.09 | $326.53 | $306.00 | $309.66 | -3.27% | 1,495,469 |
| Apr 16, 2026 | $333.39 | $333.39 | $318.93 | $320.13 | -3.98% | 1,022,841 |
| Apr 15, 2026 | $341.63 | $342.23 | $331.02 | $333.39 | -1.77% | 799,050 |
| Apr 14, 2026 | $330.81 | $343.36 | $330.54 | $339.41 | +1.92% | 1,228,645 |
| Apr 13, 2026 | $320.66 | $333.56 | $319.00 | $333.00 | +3.38% | 967,690 |
| Apr 10, 2026 | $323.49 | $328.93 | $317.53 | $322.11 | +0.26% | 698,672 |
| Apr 9, 2026 | $325.67 | $326.90 | $318.77 | $321.28 | -1.82% | 1,119,233 |
| Apr 8, 2026 | $327.49 | $330.30 | $324.44 | $327.25 | +2.42% | 1,024,695 |
| Apr 7, 2026 | $319.48 | $322.35 | $313.54 | $319.52 | -3.28% | 1,305,121 |
| Apr 6, 2026 | $320.10 | $335.58 | $320.10 | $330.34 | +3.60% | 1,276,806 |
| Apr 2, 2026 | $323.03 | $325.49 | $315.90 | $318.85 | -3.01% | 872,487 |
| Apr 1, 2026 | $332.69 | $335.48 | $327.59 | $328.73 | -0.65% | 673,304 |
| Mar 31, 2026 | $319.06 | $332.48 | $318.37 | $330.87 | +4.68% | 1,352,289 |
| Mar 30, 2026 | $319.32 | $321.76 | $314.21 | $316.09 | -0.40% | 1,223,904 |
| Mar 27, 2026 | $327.10 | $329.69 | $316.85 | $317.36 | -3.29% | 815,901 |
| Mar 26, 2026 | $328.90 | $332.81 | $327.69 | $328.16 | -0.16% | 1,119,781 |
| Mar 25, 2026 | $313.34 | $329.48 | $311.71 | $328.70 | +6.70% | 1,139,647 |
| Mar 24, 2026 | $303.42 | $308.91 | $299.62 | $308.05 | +0.45% | 1,497,337 |
| Mar 23, 2026 | $320.77 | $323.23 | $304.38 | $306.66 | -1.77% | 1,378,963 |
| Mar 20, 2026 | $311.05 | $322.43 | $311.05 | $312.17 | +0.34% | 2,050,765 |
| Mar 19, 2026 | $316.42 | $317.61 | $309.73 | $311.10 | -1.18% | 663,587 |
| Mar 18, 2026 | $317.50 | $319.27 | $312.58 | $314.80 | -1.75% | 1,077,650 |
| Mar 17, 2026 | $319.63 | $326.96 | $317.53 | $320.42 | +0.47% | 1,796,943 |
| Mar 16, 2026 | $311.22 | $319.55 | $311.22 | $318.91 | +1.75% | 1,247,482 |
| Mar 13, 2026 | $319.00 | $319.50 | $309.92 | $313.41 | -1.20% | 829,276 |
| Mar 12, 2026 | $320.53 | $321.00 | $309.61 | $317.23 | -1.00% | 1,247,315 |
| Mar 11, 2026 | $322.00 | $323.71 | $317.75 | $320.43 | -0.60% | 906,626 |
| Mar 10, 2026 | $325.60 | $326.18 | $317.03 | $322.38 | -0.37% | 1,169,417 |
| Mar 9, 2026 | $317.25 | $323.68 | $313.12 | $323.59 | +0.91% | 1,081,127 |
| Mar 6, 2026 | $317.73 | $321.17 | $312.09 | $320.66 | +0.05% | 996,497 |
| Mar 5, 2026 | $323.69 | $328.28 | $319.51 | $320.51 | -2.07% | 1,215,172 |
| Mar 4, 2026 | $319.20 | $328.00 | $317.25 | $327.30 | +2.71% | 931,151 |
| Mar 3, 2026 | $321.37 | $324.06 | $315.20 | $318.65 | -1.97% | 947,625 |
| Mar 2, 2026 | $329.41 | $334.42 | $323.16 | $325.07 | -2.36% | 1,302,332 |
| Feb 27, 2026 | $331.24 | $334.80 | $328.39 | $332.92 | +0.51% | 1,569,839 |
| Feb 26, 2026 | $328.67 | $333.47 | $322.00 | $331.24 | +1.19% | 880,311 |
| Feb 25, 2026 | $332.76 | $334.42 | $325.24 | $327.36 | -1.65% | 751,722 |
| Feb 24, 2026 | $328.22 | $333.07 | $324.48 | $332.85 | +1.06% | 791,573 |
| Feb 23, 2026 | $335.73 | $341.39 | $326.76 | $329.35 | -2.03% | 792,033 |
| Feb 20, 2026 | $336.58 | $345.90 | $335.83 | $336.19 | -0.94% | 1,375,285 |
| Feb 19, 2026 | $332.24 | $339.61 | $326.33 | $339.37 | +2.01% | 1,152,962 |
| Feb 18, 2026 | $328.86 | $335.80 | $324.53 | $332.68 | +0.02% | 1,151,205 |
| Feb 17, 2026 | $316.80 | $336.21 | $315.63 | $332.61 | +5.79% | 1,516,389 |
| Feb 13, 2026 | $302.55 | $318.44 | $302.55 | $314.40 | +1.92% | 1,476,326 |
| Feb 12, 2026 | $314.42 | $315.51 | $298.00 | $308.48 | -4.28% | 2,897,726 |
| Feb 11, 2026 | $322.14 | $325.04 | $317.80 | $322.28 | -0.22% | 1,582,249 |
| Feb 10, 2026 | $322.68 | $325.98 | $317.89 | $322.98 | +0.93% | 1,865,664 |
| Feb 9, 2026 | $325.49 | $329.92 | $319.26 | $320.00 | -2.49% | 1,392,019 |
| Feb 6, 2026 | $331.61 | $340.07 | $326.51 | $328.16 | -0.93% | 1,476,914 |
| Feb 5, 2026 | $350.50 | $350.50 | $327.27 | $331.24 | -5.89% | 2,620,979 |
| Feb 4, 2026 | $354.00 | $355.49 | $347.08 | $351.96 | +0.05% | 1,779,461 |
| Feb 3, 2026 | $338.49 | $352.82 | $337.59 | $351.80 | +3.74% | 2,152,860 |
| Feb 2, 2026 | $337.42 | $342.33 | $333.00 | $339.11 | +0.31% | 1,911,150 |
| Jan 30, 2026 | $343.10 | $346.50 | $336.39 | $338.06 | -2.52% | 1,648,568 |
| Jan 29, 2026 | $349.37 | $350.34 | $345.01 | $346.79 | -0.80% | 1,682,030 |
| Jan 28, 2026 | $353.66 | $356.84 | $348.00 | $349.58 | -1.46% | 1,099,190 |
| Jan 27, 2026 | $361.55 | $368.07 | $354.69 | $354.75 | -1.83% | 988,087 |
| Jan 26, 2026 | $357.98 | $364.07 | $352.50 | $361.35 | +0.94% | 936,370 |
| Jan 23, 2026 | $368.20 | $371.33 | $356.72 | $357.98 | -3.25% | 1,636,801 |
| Jan 22, 2026 | $365.50 | $376.87 | $363.36 | $370.00 | +1.24% | 1,875,372 |
| Jan 21, 2026 | $353.01 | $366.00 | $351.55 | $365.46 | +2.79% | 1,523,470 |
| Jan 20, 2026 | $350.70 | $355.74 | $347.77 | $355.53 | -1.04% | 1,722,679 |
| Jan 16, 2026 | $362.29 | $367.20 | $355.46 | $359.27 | +0.00% | 1,527,370 |
| Jan 15, 2026 | $368.54 | $372.82 | $356.83 | $359.26 | -2.07% | 911,176 |
| Jan 14, 2026 | $369.95 | $371.71 | $359.95 | $366.86 | -0.84% | 1,250,044 |
| Jan 13, 2026 | $369.10 | $376.88 | $366.92 | $369.96 | -0.26% | 1,625,677 |
| Jan 12, 2026 | $377.82 | $378.61 | $353.52 | $370.91 | -6.87% | 3,808,067 |
| Jan 9, 2026 | $399.40 | $409.58 | $392.56 | $398.29 | -0.28% | 1,440,224 |
| Jan 8, 2026 | $420.18 | $425.19 | $393.48 | $399.40 | -5.47% | 1,400,657 |
| Jan 7, 2026 | $405.51 | $427.05 | $405.51 | $422.50 | +3.96% | 1,426,278 |
| Jan 6, 2026 | $396.23 | $409.18 | $384.42 | $406.40 | +2.15% | 1,612,994 |
| Jan 5, 2026 | $397.57 | $400.00 | $383.84 | $397.83 | -0.58% | 1,093,965 |
| Jan 2, 2026 | $399.34 | $407.22 | $396.08 | $400.17 | +0.63% | 730,517 |
| Dec 31, 2025 | $397.25 | $402.44 | $397.25 | $397.65 | +0.10% | 768,860 |
| Dec 30, 2025 | $394.81 | $398.40 | $393.64 | $397.25 | -0.39% | 504,789 |
| Dec 29, 2025 | $400.10 | $402.72 | $397.05 | $398.82 | -0.44% | 638,375 |
| Dec 26, 2025 | $404.58 | $404.58 | $397.31 | $400.59 | -0.02% | 401,455 |
| Dec 24, 2025 | $395.99 | $401.47 | $395.05 | $400.69 | +0.50% | 408,233 |
| Dec 23, 2025 | $404.72 | $407.43 | $395.99 | $398.70 | -2.21% | 792,295 |
| Dec 22, 2025 | $409.60 | $413.59 | $403.20 | $407.73 | +1.87% | 1,052,983 |
| Dec 19, 2025 | $399.11 | $408.15 | $395.97 | $400.23 | +1.06% | 12,576,510 |
| Dec 18, 2025 | $394.49 | $404.19 | $391.51 | $396.04 | +1.00% | 1,714,954 |
| Dec 17, 2025 | $394.18 | $400.24 | $389.00 | $392.10 | +0.24% | 1,041,476 |
| Dec 16, 2025 | $390.65 | $399.64 | $388.54 | $391.17 | -0.08% | 1,345,516 |
| Dec 15, 2025 | $394.22 | $402.33 | $390.00 | $391.50 | -1.52% | 1,483,326 |
| Dec 12, 2025 | $408.86 | $410.04 | $387.03 | $397.55 | -3.65% | 1,659,227 |
| Dec 11, 2025 | $403.36 | $414.22 | $402.22 | $412.63 | +2.02% | 1,284,788 |
| Dec 10, 2025 | $416.54 | $417.00 | $403.80 | $404.46 | -2.59% | 1,188,960 |
| Dec 9, 2025 | $430.45 | $433.31 | $412.31 | $415.21 | -3.44% | 1,610,475 |
| Dec 8, 2025 | $447.00 | $449.78 | $423.45 | $430.02 | -6.13% | 2,411,635 |
| Dec 5, 2025 | $468.29 | $473.50 | $455.32 | $458.12 | -1.55% | 627,353 |
| Dec 4, 2025 | $472.67 | $477.06 | $463.03 | $465.34 | -1.68% | 983,982 |
| Dec 3, 2025 | $466.49 | $479.79 | $460.41 | $473.29 | +1.80% | 1,092,993 |
| Dec 2, 2025 | $453.90 | $472.48 | $453.01 | $464.93 | +2.28% | 1,204,115 |
| Dec 1, 2025 | $450.00 | $462.93 | $448.27 | $454.56 | +0.74% | 1,070,657 |
| Nov 28, 2025 | $448.18 | $455.76 | $444.43 | $451.23 | +1.37% | 563,871 |
| Nov 26, 2025 | $432.87 | $447.69 | $430.27 | $445.12 | +3.56% | 908,163 |
| Nov 25, 2025 | $436.84 | $441.82 | $428.57 | $429.80 | -1.02% | 1,009,228 |
| Nov 24, 2025 | $439.46 | $444.67 | $420.30 | $434.23 | -0.49% | 1,750,352 |
| Nov 21, 2025 | $448.23 | $449.53 | $433.50 | $436.38 | -2.11% | 1,298,052 |
| Nov 20, 2025 | $463.32 | $467.73 | $445.34 | $445.79 | -3.25% | 787,662 |
| Nov 19, 2025 | $462.27 | $465.32 | $456.90 | $460.76 | -0.33% | 893,894 |
| Nov 18, 2025 | $458.15 | $469.11 | $456.27 | $462.30 | +0.38% | 668,666 |
| Nov 17, 2025 | $449.00 | $463.92 | $449.00 | $460.54 | +2.53% | 962,080 |
| Nov 14, 2025 | $453.87 | $461.96 | $448.28 | $449.16 | -1.06% | 968,547 |
| Nov 13, 2025 | $450.67 | $456.14 | $447.12 | $453.97 | +0.27% | 798,910 |
| Nov 12, 2025 | $450.63 | $459.27 | $446.71 | $452.74 | +0.17% | 937,690 |
| Nov 11, 2025 | $443.53 | $455.20 | $441.21 | $451.95 | +2.32% | 981,717 |
| Nov 10, 2025 | $445.00 | $449.68 | $440.93 | $441.70 | -0.23% | 739,044 |
| Nov 7, 2025 | $437.81 | $443.69 | $430.84 | $442.70 | +0.50% | 822,669 |
| Nov 6, 2025 | $431.78 | $445.50 | $429.00 | $440.49 | +1.36% | 700,509 |
| Nov 5, 2025 | $422.11 | $438.53 | $417.00 | $434.56 | +2.62% | 974,550 |
| Nov 4, 2025 | $429.90 | $431.50 | $421.83 | $423.47 | -2.44% | 1,170,232 |
| Nov 3, 2025 | $454.58 | $457.26 | $429.60 | $434.07 | -4.82% | 1,556,549 |
| Oct 31, 2025 | $449.00 | $459.77 | $441.22 | $456.04 | +1.44% | 1,817,670 |
| Oct 30, 2025 | $450.00 | $472.36 | $436.51 | $449.56 | -6.65% | 2,313,994 |
| Oct 29, 2025 | $475.19 | $482.73 | $467.09 | $481.59 | +1.19% | 1,360,223 |
| Oct 28, 2025 | $476.50 | $484.61 | $473.29 | $475.91 | -0.56% | 836,305 |
| Oct 27, 2025 | $465.56 | $485.36 | $465.55 | $478.58 | +3.27% | 1,174,680 |
| Oct 24, 2025 | $468.68 | $469.29 | $459.38 | $463.43 | -0.12% | 771,302 |
| Oct 23, 2025 | $464.71 | $468.86 | $456.90 | $464.00 | -0.19% | 683,376 |
| Oct 22, 2025 | $477.66 | $480.53 | $461.21 | $464.90 | -1.92% | 950,023 |
| Oct 21, 2025 | $488.42 | $490.05 | $471.40 | $474.00 | -3.51% | 826,254 |
| Oct 20, 2025 | $476.82 | $495.55 | $476.82 | $491.22 | – | 950,011 |
Seasonality
ALNY return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average | 0.6% | 0.0% | 1.2% | -3.1% | 1.0% | 14.6% | -0.2% | 12.9% | 0.7% | -7.5% | 8.7% | -2.5% |
| Months up | 5 of 10 | 4 of 10 | 4 of 10 | 2 of 10 | 6 of 10 | 8 of 10 | 5 of 10 | 9 of 10 | 5 of 10 | 4 of 10 | 7 of 9 | 3 of 9 |
| 2026 | -15.0% | -1.5% | -0.6% | -6.5% | -2.4% | -0.3% | -31.7% | 17.1% | 2.5% | -33.1% | ||
| 2025 | 15.3% | -9.1% | 9.4% | -2.5% | 15.7% | 7.1% | 20.3% | 13.8% | 2.1% | 0.0% | -1.1% | -11.9% |
| 2024 | -9.7% | -12.6% | -1.1% | -3.7% | 3.1% | 63.7% | -2.3% | 10.6% | 4.7% | -3.1% | -5.1% | -7.0% |
| 2023 | -4.7% | -15.4% | 4.6% | -0.6% | -7.1% | 2.7% | 2.9% | 1.2% | -10.5% | -14.3% | 10.8% | 13.8% |
| 2022 | -18.9% | 14.7% | 3.4% | -18.3% | -5.7% | 15.9% | -2.6% | 45.5% | -3.1% | 3.5% | 6.4% | 7.7% |
| 2021 | 15.8% | -1.6% | -4.7% | -0.4% | 1.0% | 19.4% | 5.6% | 12.6% | -6.3% | -15.5% | 15.2% | -7.7% |
| 2020 | -0.3% | 2.5% | -7.5% | 21.0% | 2.7% | 9.5% | -1.6% | -9.0% | 9.8% | -15.5% | 5.6% | 0.0% |
| 2019 | 14.6% | 1.8% | 9.9% | -4.4% | -24.4% | 7.5% | 6.9% | 4.0% | -0.3% | 7.9% | 35.0% | -1.7% |
| 2018 | 2.3% | -7.6% | -0.9% | -20.6% | 5.2% | -1.0% | -3.5% | 29.1% | -28.7% | -8.1% | 0.9% | -10.2% |
| 2017 | 6.8% | 29.1% | -0.8% | 4.6% | 22.1% | 21.8% | 3.7% | 3.6% | 37.0% | 3.7% | 10.4% | -5.6% |