Alnylam Pharmaceuticals, Inc. (ALNY)
NASDAQ: ALNY · Real-Time Price · USD
219.89
+0.17 (0.08%)
At close: Oct 5, 2026, 4:00 PM EDT
222.36
+2.47 (1.12%)
Pre-market: Oct 6, 2026, 5:19 AM EDT
Alnylam Pharmaceuticals Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 5, 2026 | 218.36 | 222.08 | 215.46 | 219.89 | 219.89 | 0.08% | 1,281,105 |
| Oct 2, 2026 | 231.31 | 231.36 | 219.40 | 219.72 | 219.72 | -4.96% | 1,661,854 |
| Oct 1, 2026 | 248.21 | 251.71 | 230.06 | 231.18 | 231.18 | -6.31% | 2,017,406 |
| Sep 30, 2026 | 253.68 | 254.44 | 246.66 | 246.74 | 246.74 | -2.89% | 1,044,414 |
| Sep 29, 2026 | 254.86 | 257.27 | 251.02 | 254.07 | 254.07 | -0.51% | 787,081 |
| Sep 28, 2026 | 256.28 | 256.60 | 248.12 | 255.36 | 255.36 | -0.23% | 1,147,872 |
| Sep 25, 2026 | 248.39 | 256.66 | 247.51 | 255.96 | 255.96 | 2.55% | 1,084,529 |
| Sep 24, 2026 | 246.51 | 251.81 | 245.52 | 249.59 | 249.59 | 1.25% | 933,737 |
| Sep 23, 2026 | 249.99 | 253.81 | 245.34 | 246.51 | 246.51 | -2.04% | 1,481,713 |
| Sep 22, 2026 | 246.86 | 255.51 | 244.13 | 251.65 | 251.65 | 3.00% | 1,131,952 |
| Sep 21, 2026 | 240.37 | 247.10 | 237.97 | 244.32 | 244.32 | 1.99% | 1,152,874 |
| Sep 18, 2026 | 246.41 | 246.49 | 238.51 | 239.56 | 239.56 | -2.42% | 2,756,178 |
| Sep 17, 2026 | 242.60 | 245.63 | 239.50 | 245.51 | 245.51 | 2.57% | 1,006,573 |
| Sep 16, 2026 | 239.50 | 242.24 | 236.00 | 239.36 | 239.36 | 0.46% | 853,903 |
| Sep 15, 2026 | 246.99 | 247.43 | 237.44 | 238.27 | 238.27 | -4.69% | 2,175,150 |
| Sep 14, 2026 | 250.17 | 252.79 | 244.18 | 249.99 | 249.99 | 0.53% | 997,229 |
| Sep 11, 2026 | 248.05 | 254.08 | 246.01 | 248.68 | 248.68 | 0.47% | 1,177,421 |
| Sep 10, 2026 | 256.68 | 256.68 | 246.42 | 247.51 | 247.51 | -4.07% | 1,626,331 |
| Sep 9, 2026 | 257.07 | 261.98 | 253.28 | 258.00 | 258.00 | -0.81% | 1,426,414 |
| Sep 8, 2026 | 259.00 | 272.08 | 254.01 | 260.10 | 260.10 | -2.26% | 2,008,633 |
| Sep 4, 2026 | 258.58 | 266.85 | 258.02 | 266.11 | 266.11 | 0.61% | 1,431,221 |
| Sep 3, 2026 | 265.94 | 271.19 | 261.54 | 264.50 | 264.50 | -1.08% | 1,710,078 |
| Sep 2, 2026 | 246.48 | 269.94 | 246.48 | 267.40 | 267.40 | 8.65% | 3,286,329 |
| Sep 1, 2026 | 242.40 | 248.13 | 238.00 | 246.11 | 246.11 | 2.25% | 1,941,271 |
| Aug 31, 2026 | 235.94 | 243.02 | 233.33 | 240.69 | 240.69 | 1.51% | 1,636,349 |
| Aug 28, 2026 | 224.47 | 239.08 | 223.61 | 237.10 | 237.10 | 0.23% | 1,847,139 |
| Aug 27, 2026 | 236.56 | 238.00 | 230.46 | 236.56 | 236.56 | -1.02% | 1,293,542 |
| Aug 26, 2026 | 238.54 | 242.89 | 236.60 | 239.00 | 239.00 | -0.45% | 1,116,266 |
| Aug 25, 2026 | 236.56 | 240.67 | 235.41 | 240.08 | 240.08 | 1.72% | 1,576,352 |
| Aug 24, 2026 | 235.83 | 237.91 | 228.59 | 236.01 | 236.01 | -0.09% | 2,137,241 |
| Aug 21, 2026 | 228.88 | 238.97 | 228.34 | 236.22 | 236.22 | 3.02% | 1,906,404 |
| Aug 20, 2026 | 239.00 | 240.88 | 228.74 | 229.30 | 229.30 | -5.49% | 1,701,704 |
| Aug 19, 2026 | 234.36 | 244.03 | 233.40 | 242.61 | 242.61 | 6.12% | 1,879,215 |
| Aug 18, 2026 | 226.27 | 230.91 | 222.01 | 228.61 | 228.61 | 1.79% | 1,600,400 |
| Aug 17, 2026 | 225.76 | 227.99 | 222.12 | 224.60 | 224.60 | -1.77% | 1,539,238 |
| Aug 14, 2026 | 223.52 | 228.98 | 220.23 | 228.65 | 228.65 | 0.67% | 1,525,934 |
| Aug 13, 2026 | 225.95 | 227.54 | 222.70 | 227.12 | 227.12 | 1.42% | 1,449,424 |
| Aug 12, 2026 | 219.00 | 224.66 | 219.00 | 223.95 | 223.95 | 1.24% | 1,621,305 |
| Aug 11, 2026 | 217.41 | 223.44 | 216.50 | 221.20 | 221.20 | 1.94% | 1,438,183 |
| Aug 10, 2026 | 218.00 | 223.50 | 215.61 | 216.98 | 216.98 | -1.01% | 1,404,831 |
| Aug 7, 2026 | 217.31 | 219.64 | 210.49 | 219.20 | 219.20 | 1.43% | 1,735,992 |
| Aug 6, 2026 | 228.58 | 234.00 | 212.98 | 216.12 | 216.12 | -5.51% | 2,274,559 |
| Aug 5, 2026 | 221.74 | 229.65 | 221.50 | 228.72 | 228.72 | 4.44% | 2,734,599 |
| Aug 4, 2026 | 220.33 | 222.59 | 215.07 | 219.00 | 219.00 | -0.60% | 3,107,854 |
| Aug 3, 2026 | 208.04 | 220.49 | 208.04 | 220.33 | 220.33 | 7.21% | 3,400,184 |
| Jul 31, 2026 | 205.46 | 207.99 | 200.11 | 205.52 | 205.52 | 0.02% | 4,477,567 |
| Jul 30, 2026 | 225.02 | 230.00 | 197.81 | 205.48 | 205.48 | -28.31% | 9,835,843 |
| Jul 29, 2026 | 288.09 | 290.60 | 284.15 | 286.62 | 286.62 | -0.62% | 1,301,501 |
| Jul 28, 2026 | 282.79 | 290.47 | 281.23 | 288.41 | 288.41 | 3.60% | 1,437,745 |
| Jul 27, 2026 | 272.66 | 284.68 | 272.66 | 278.40 | 278.40 | 2.44% | 1,409,631 |