The highest closing price for Alnylam Pharmaceuticals (ALNY) last month was $234.03, on October 15. It was down 33.5% for the month. The latest price is $165.
| DATE | OPEN | HIGH | LOW | CLOSE | VOLUME |
|---|---|---|---|---|---|
October 30 2026 | $172.70 | $180.61 | $163.30 | $165.00 | 7,054,900 |
October 29 2026 | $185.59 | $202.37 | $172.31 | $174.00 | 11,795,551 |
October 28 2026 | $222.72 | $232.88 | $220.00 | $232.40 | 1,892,156 |
October 27 2026 | $225.00 | $228.49 | $222.82 | $226.79 | 1,603,500 |
October 26 2026 | $226.24 | $232.48 | $224.10 | $227.66 | 1,433,471 |
October 23 2026 | $227.28 | $229.39 | $222.00 | $224.03 | 1,055,900 |
October 22 2026 | $224.92 | $229.82 | $223.76 | $227.28 | 2,211,900 |
October 21 2026 | $227.86 | $230.84 | $224.88 | $225.10 | 1,181,000 |
October 20 2026 | $237.73 | $238.96 | $229.54 | $230.71 | 1,505,200 |
October 19 2026 | $232.65 | $236.54 | $231.26 | $233.29 | 1,344,100 |
October 16 2026 | $235.18 | $237.98 | $231.29 | $231.83 | 1,404,800 |
October 15 2026 | $230.00 | $234.30 | $228.12 | $234.03 | 1,257,400 |
October 14 2026 | $224.49 | $229.56 | $222.25 | $224.47 | 1,105,600 |
October 13 2026 | $228.93 | $229.53 | $221.56 | $223.82 | 1,119,000 |
October 12 2026 | $233.13 | $233.60 | $226.35 | $227.02 | 916,900 |
October 09 2026 | $224.74 | $232.94 | $222.71 | $232.68 | 959,400 |
October 08 2026 | $222.03 | $225.90 | $218.39 | $224.53 | 1,771,700 |
October 07 2026 | $224.39 | $230.42 | $222.46 | $224.41 | 1,064,100 |
October 06 2026 | $221.02 | $229.18 | $217.18 | $223.94 | 1,356,300 |
October 05 2026 | $218.36 | $222.08 | $215.46 | $219.89 | 1,281,100 |
October 02 2026 | $231.31 | $231.36 | $219.40 | $219.72 | 1,661,700 |
October 01 2026 | $248.21 | $251.71 | $230.06 | $231.18 | 2,017,300 |
Daily pricing data for Alnylam Pharmaceuticals dates back to 5/28/2004, and may be incomplete.