Alnylam Pharmaceuticals, Inc. (ALNY)
NASDAQ: ALNY · Real-Time Price · USD
327.41
-5.44 (-1.63%)
Feb 25, 2026, 11:01 AM EST - Market open
Alnylam Pharmaceuticals Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Feb 25, 2026 | 332.76 | 334.42 | 325.31 | 326.39 | - | -1.94% | 176,124 |
| Feb 24, 2026 | 328.22 | 333.07 | 324.48 | 332.85 | 332.85 | 1.06% | 786,138 |
| Feb 23, 2026 | 335.73 | 341.39 | 326.76 | 329.35 | 329.35 | -2.03% | 792,032 |
| Feb 20, 2026 | 336.58 | 345.90 | 335.83 | 336.19 | 336.19 | -0.94% | 1,375,285 |
| Feb 19, 2026 | 332.24 | 339.61 | 326.33 | 339.37 | 339.37 | 2.01% | 1,152,962 |
| Feb 18, 2026 | 328.86 | 335.80 | 324.53 | 332.68 | 332.68 | 0.02% | 1,151,205 |
| Feb 17, 2026 | 316.80 | 336.21 | 315.63 | 332.61 | 332.61 | 5.79% | 1,516,389 |
| Feb 13, 2026 | 302.55 | 318.44 | 302.55 | 314.40 | 314.40 | 1.92% | 1,476,326 |
| Feb 12, 2026 | 314.42 | 315.51 | 298.00 | 308.48 | 308.48 | -4.28% | 2,897,726 |
| Feb 11, 2026 | 322.14 | 325.04 | 317.80 | 322.28 | 322.28 | -0.22% | 1,582,249 |
| Feb 10, 2026 | 322.68 | 325.98 | 317.89 | 322.98 | 322.98 | 0.93% | 1,865,664 |
| Feb 9, 2026 | 325.49 | 329.92 | 319.26 | 320.00 | 320.00 | -2.49% | 1,392,019 |
| Feb 6, 2026 | 331.61 | 340.07 | 326.51 | 328.16 | 328.16 | -0.93% | 1,476,914 |
| Feb 5, 2026 | 350.50 | 350.50 | 327.27 | 331.24 | 331.24 | -5.89% | 2,620,979 |
| Feb 4, 2026 | 354.00 | 355.49 | 347.08 | 351.96 | 351.96 | 0.05% | 1,779,461 |
| Feb 3, 2026 | 338.49 | 352.82 | 337.59 | 351.80 | 351.80 | 3.74% | 2,152,860 |
| Feb 2, 2026 | 337.42 | 342.33 | 333.00 | 339.11 | 339.11 | 0.31% | 1,911,150 |
| Jan 30, 2026 | 343.10 | 346.50 | 336.39 | 338.06 | 338.06 | -2.52% | 1,648,568 |
| Jan 29, 2026 | 349.37 | 350.34 | 345.01 | 346.79 | 346.79 | -0.80% | 1,682,030 |
| Jan 28, 2026 | 353.66 | 356.84 | 348.00 | 349.58 | 349.58 | -1.46% | 1,099,190 |
| Jan 27, 2026 | 361.55 | 368.07 | 354.69 | 354.75 | 354.75 | -1.83% | 988,087 |
| Jan 26, 2026 | 357.98 | 364.07 | 352.50 | 361.35 | 361.35 | 0.94% | 936,370 |
| Jan 23, 2026 | 368.20 | 371.33 | 356.72 | 357.98 | 357.98 | -3.25% | 1,636,801 |
| Jan 22, 2026 | 365.50 | 376.87 | 363.36 | 370.00 | 370.00 | 1.24% | 1,875,372 |
| Jan 21, 2026 | 353.01 | 366.00 | 351.55 | 365.46 | 365.46 | 2.79% | 1,523,470 |
| Jan 20, 2026 | 350.70 | 355.74 | 347.77 | 355.53 | 355.53 | -1.04% | 1,722,679 |
| Jan 16, 2026 | 362.29 | 367.20 | 355.46 | 359.27 | 359.27 | - | 1,527,370 |
| Jan 15, 2026 | 368.54 | 372.82 | 356.83 | 359.26 | 359.26 | -2.07% | 911,176 |
| Jan 14, 2026 | 369.95 | 371.71 | 359.95 | 366.86 | 366.86 | -0.84% | 1,250,044 |
| Jan 13, 2026 | 369.10 | 376.88 | 366.92 | 369.96 | 369.96 | -0.26% | 1,625,677 |
| Jan 12, 2026 | 377.82 | 378.61 | 353.52 | 370.91 | 370.91 | -6.87% | 3,808,067 |
| Jan 9, 2026 | 399.40 | 409.58 | 392.56 | 398.29 | 398.29 | -0.28% | 1,440,224 |
| Jan 8, 2026 | 420.18 | 425.19 | 393.48 | 399.40 | 399.40 | -5.47% | 1,400,657 |
| Jan 7, 2026 | 405.51 | 427.05 | 405.51 | 422.50 | 422.50 | 3.96% | 1,426,278 |
| Jan 6, 2026 | 396.23 | 409.18 | 384.42 | 406.40 | 406.40 | 2.15% | 1,612,994 |
| Jan 5, 2026 | 397.57 | 400.00 | 383.84 | 397.83 | 397.83 | -0.58% | 1,093,965 |
| Jan 2, 2026 | 399.34 | 407.22 | 396.08 | 400.17 | 400.17 | 0.63% | 730,517 |
| Dec 31, 2025 | 397.25 | 402.44 | 397.25 | 397.65 | 397.65 | 0.10% | 768,860 |
| Dec 30, 2025 | 394.81 | 398.40 | 393.64 | 397.25 | 397.25 | -0.39% | 504,789 |
| Dec 29, 2025 | 400.10 | 402.72 | 397.05 | 398.82 | 398.82 | -0.44% | 638,375 |
| Dec 26, 2025 | 404.58 | 404.58 | 397.31 | 400.59 | 400.59 | -0.02% | 401,455 |
| Dec 24, 2025 | 395.99 | 401.47 | 395.05 | 400.69 | 400.69 | 0.50% | 408,233 |
| Dec 23, 2025 | 404.72 | 407.43 | 395.99 | 398.70 | 398.70 | -2.21% | 792,295 |
| Dec 22, 2025 | 409.60 | 413.59 | 403.20 | 407.73 | 407.73 | 1.87% | 1,052,983 |
| Dec 19, 2025 | 399.11 | 408.15 | 395.97 | 400.23 | 400.23 | 1.06% | 12,576,505 |
| Dec 18, 2025 | 394.49 | 404.19 | 391.51 | 396.04 | 396.04 | 1.00% | 1,714,954 |
| Dec 17, 2025 | 394.18 | 400.24 | 389.00 | 392.10 | 392.10 | 0.24% | 1,041,476 |
| Dec 16, 2025 | 390.65 | 399.64 | 388.54 | 391.17 | 391.17 | -0.08% | 1,345,516 |
| Dec 15, 2025 | 394.22 | 402.33 | 390.00 | 391.50 | 391.50 | -1.52% | 1,483,326 |
| Dec 12, 2025 | 408.86 | 410.04 | 387.03 | 397.55 | 397.55 | -3.65% | 1,659,227 |