Alnylam Pharmaceuticals, Inc. (ALNY)
NASDAQ: ALNY · Real-Time Price · USD
323.59
+2.93 (0.91%)
At close: Mar 9, 2026, 4:00 PM EDT
323.59
0.00 (0.00%)
After-hours: Mar 9, 2026, 6:00 PM EDT
Alnylam Pharmaceuticals Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Mar 9, 2026 | 317.25 | 323.68 | 313.12 | 323.53 | 323.53 | 0.89% | 1,080,927 |
| Mar 6, 2026 | 317.73 | 321.17 | 312.09 | 320.66 | 320.66 | 0.05% | 983,183 |
| Mar 5, 2026 | 323.69 | 328.28 | 319.51 | 320.51 | 320.51 | -2.07% | 1,159,602 |
| Mar 4, 2026 | 319.20 | 328.00 | 317.25 | 327.30 | 327.30 | 2.71% | 911,971 |
| Mar 3, 2026 | 321.37 | 324.06 | 315.20 | 318.65 | 318.65 | -1.97% | 947,360 |
| Mar 2, 2026 | 329.41 | 334.42 | 323.16 | 325.07 | 325.07 | -2.36% | 1,299,548 |
| Feb 27, 2026 | 331.24 | 334.80 | 328.39 | 332.92 | 332.92 | 0.51% | 1,569,839 |
| Feb 26, 2026 | 328.67 | 333.47 | 322.00 | 331.24 | 331.24 | 1.19% | 880,311 |
| Feb 25, 2026 | 332.76 | 334.42 | 325.24 | 327.36 | 327.36 | -1.65% | 751,722 |
| Feb 24, 2026 | 328.22 | 333.07 | 324.48 | 332.85 | 332.85 | 1.06% | 791,573 |
| Feb 23, 2026 | 335.73 | 341.39 | 326.76 | 329.35 | 329.35 | -2.03% | 792,033 |
| 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 |
| Dec 11, 2025 | 403.36 | 414.22 | 402.22 | 412.63 | 412.63 | 2.02% | 1,284,788 |
| Dec 10, 2025 | 416.54 | 417.00 | 403.80 | 404.46 | 404.46 | -2.59% | 1,188,960 |
| Dec 9, 2025 | 430.45 | 433.31 | 412.31 | 415.21 | 415.21 | -3.44% | 1,610,475 |
| Dec 8, 2025 | 447.00 | 449.78 | 423.45 | 430.02 | 430.02 | -6.13% | 2,411,635 |
| Dec 5, 2025 | 468.29 | 473.50 | 455.32 | 458.12 | 458.12 | -1.55% | 627,353 |
| Dec 4, 2025 | 472.67 | 477.06 | 463.03 | 465.34 | 465.34 | -1.68% | 983,982 |
| Dec 3, 2025 | 466.49 | 479.79 | 460.41 | 473.29 | 473.29 | 1.80% | 1,092,993 |
| Dec 2, 2025 | 453.90 | 472.48 | 453.01 | 464.93 | 464.93 | 2.28% | 1,204,115 |
| Dec 1, 2025 | 450.00 | 462.93 | 448.27 | 454.56 | 454.56 | 0.74% | 1,070,657 |
| Nov 28, 2025 | 448.18 | 455.76 | 444.43 | 451.23 | 451.23 | 1.37% | 563,871 |
| Nov 26, 2025 | 432.87 | 447.69 | 430.27 | 445.12 | 445.12 | 3.56% | 908,163 |
| Nov 25, 2025 | 436.84 | 441.82 | 428.57 | 429.80 | 429.80 | -1.02% | 1,009,228 |
| Nov 24, 2025 | 439.46 | 444.67 | 420.30 | 434.23 | 434.23 | -0.49% | 1,750,352 |
| Nov 21, 2025 | 448.23 | 449.53 | 433.50 | 436.38 | 436.38 | -2.11% | 1,298,052 |
| Nov 20, 2025 | 463.32 | 467.73 | 445.34 | 445.79 | 445.79 | -3.25% | 787,662 |
| Nov 19, 2025 | 462.27 | 465.32 | 456.90 | 460.76 | 460.76 | -0.33% | 893,894 |
| Nov 18, 2025 | 458.15 | 469.11 | 456.27 | 462.30 | 462.30 | 0.38% | 668,666 |
| Nov 17, 2025 | 449.00 | 463.92 | 449.00 | 460.54 | 460.54 | 2.53% | 962,080 |
| Nov 14, 2025 | 453.87 | 461.96 | 448.28 | 449.16 | 449.16 | -1.06% | 968,547 |
| Nov 13, 2025 | 450.67 | 456.14 | 447.12 | 453.97 | 453.97 | 0.27% | 798,910 |
| Nov 12, 2025 | 450.63 | 459.27 | 446.71 | 452.74 | 452.74 | 0.17% | 937,690 |
| Nov 11, 2025 | 443.53 | 455.20 | 441.21 | 451.95 | 451.95 | 2.32% | 981,717 |
| Nov 10, 2025 | 445.00 | 449.68 | 440.93 | 441.70 | 441.70 | -0.23% | 739,044 |
| Nov 7, 2025 | 437.81 | 443.69 | 430.84 | 442.70 | 442.70 | 0.50% | 822,669 |
| Nov 6, 2025 | 431.78 | 445.50 | 429.00 | 440.49 | 440.49 | 1.36% | 700,509 |
| Nov 5, 2025 | 422.11 | 438.53 | 417.00 | 434.56 | 434.56 | 2.62% | 974,550 |
| Nov 4, 2025 | 429.90 | 431.50 | 421.83 | 423.47 | 423.47 | -2.44% | 1,170,232 |
| Nov 3, 2025 | 454.58 | 457.26 | 429.60 | 434.07 | 434.07 | -4.82% | 1,556,549 |
| Oct 31, 2025 | 449.00 | 459.77 | 441.22 | 456.04 | 456.04 | 1.44% | 1,817,670 |
| Oct 30, 2025 | 450.00 | 472.36 | 436.51 | 449.56 | 449.56 | -6.65% | 2,313,994 |
| Oct 29, 2025 | 475.19 | 482.73 | 467.09 | 481.59 | 481.59 | 1.19% | 1,360,223 |
| Oct 28, 2025 | 476.50 | 484.61 | 473.29 | 475.91 | 475.91 | -0.56% | 836,305 |
| Oct 27, 2025 | 465.56 | 485.36 | 465.55 | 478.58 | 478.58 | 3.27% | 1,174,680 |
| Oct 24, 2025 | 468.68 | 469.29 | 459.38 | 463.43 | 463.43 | -0.12% | 771,302 |
| Oct 23, 2025 | 464.71 | 468.86 | 456.90 | 464.00 | 464.00 | -0.19% | 683,376 |
| Oct 22, 2025 | 477.66 | 480.53 | 461.21 | 464.90 | 464.90 | -1.92% | 950,023 |
| Oct 21, 2025 | 488.42 | 490.05 | 471.40 | 474.00 | 474.00 | -3.51% | 826,254 |
| Oct 20, 2025 | 476.82 | 495.55 | 476.82 | 491.22 | 491.22 | 1.98% | 950,011 |
| Oct 17, 2025 | 481.65 | 492.62 | 476.44 | 481.67 | 481.67 | 0.12% | 1,029,195 |
| Oct 16, 2025 | 474.39 | 488.39 | 470.46 | 481.07 | 481.07 | 2.30% | 964,728 |
| Oct 15, 2025 | 469.19 | 485.28 | 467.50 | 470.27 | 470.27 | 0.19% | 1,475,359 |
| Oct 14, 2025 | 462.13 | 479.69 | 457.73 | 469.36 | 469.36 | 0.95% | 1,435,825 |