ALNY
Alnylam Pharmaceuticals, Inc.Company with tickers: ALNY
CIK
1178670
CUSIP
02043Q107
Shares Outstanding
133,512,573
Website
https://www.alnylam.com
Investor Relations
https://investors.alnylam.com/
13F Activity (30d)
31 filings
23 filers
Weekly off-exchange (dark pool / OTC) trading volume reported to FINRA under its OTC/ATS Transparency data. ATS volume is executed on alternating trading systems (dark pools); non-ATS OTC is other over-the-counter dealer volume. The off-exchange share is total off-exchange volume as a percentage of consolidated weekly trading volume for the same Monday–Friday week.
Off-Exchange Volume History
| Week Start | ATS Volume | Non-ATS OTC Volume | Total Off-Exchange | % of FINRA Weekly Volume |
|---|---|---|---|---|
| 2026-05-25 | 1,015,100 | 652,527 | 1,667,627 | 36.5% |
| 2026-05-18 | 970,996 | 513,162 | 1,484,158 | 44.3% |
| 2026-05-11 | 1,488,504 | 727,441 | 2,215,945 | 61.3% |
| 2026-05-04 | 1,833,195 | 494,705 | 2,327,900 | 52.1% |
| 2026-04-27 | 2,618,547 | 782,732 | 3,401,279 | 62.4% |
| 2026-04-20 | 1,433,432 | 703,606 | 2,137,038 | 50.8% |
| 2026-04-13 | 1,653,699 | 795,389 | 2,449,088 | 55.1% |
| 2026-04-06 | 1,930,840 | 680,634 | 2,611,474 | 48.8% |
| 2026-03-30 | 1,324,948 | 365,532 | 1,690,480 | 41.0% |
| 2026-03-23 | 1,598,304 | 807,553 | 2,405,857 | 40.4% |
| 2026-03-16 | 1,769,965 | 1,057,752 | 2,827,717 | 41.4% |
| 2026-03-09 | 1,468,983 | 600,108 | 2,069,091 | 39.5% |
| 2026-03-02 | 1,304,188 | 735,471 | 2,039,659 | 37.8% |
| 2026-02-23 | 1,209,013 | 926,219 | 2,135,232 | 44.6% |
| 2026-02-16 | 1,517,652 | 494,495 | 2,012,147 | 38.7% |
| 2026-02-09 | 2,955,514 | 740,685 | 3,696,199 | 40.1% |
| 2026-02-02 | 3,843,262 | 932,575 | 4,775,837 | 48.0% |
| 2026-01-26 | 2,076,298 | 587,799 | 2,664,097 | 41.9% |
| 2026-01-19 | 2,203,576 | 1,442,043 | 3,645,619 | 53.9% |
| 2026-01-12 | 2,763,604 | 836,524 | 3,600,128 | 39.5% |
| 2026-01-05 | 2,353,448 | 627,708 | 2,981,156 | 42.7% |
| 2025-12-29 | 640,534 | 239,386 | 879,920 | 33.3% |
| 2025-12-22 | 642,395 | 314,505 | 956,900 | 36.0% |
| 2025-12-15 | 2,372,466 | 6,722,021 | 9,094,487 | 50.1% |
| 2025-12-08 | 2,165,928 | 2,213,681 | 4,379,609 | 53.7% |
| 2025-12-01 | 1,330,984 | 720,837 | 2,051,821 | 41.2% |
| 2025-11-24 | 1,262,863 | 423,555 | 1,686,418 | 39.9% |
| 2025-11-17 | 1,609,063 | 334,490 | 1,943,553 | 42.2% |
| 2025-11-10 | 1,176,367 | 816,794 | 1,993,161 | 45.0% |
| 2025-11-03 | 1,574,014 | 574,496 | 2,148,510 | 41.1% |
| 2025-10-27 | 2,185,646 | 1,097,675 | 3,283,321 | 43.8% |
| 2025-10-20 | 1,313,272 | 498,105 | 1,811,377 | 43.3% |
| 2025-10-13 | 1,894,750 | 838,812 | 2,733,562 | 42.2% |
| 2025-10-06 | 1,528,666 | 740,872 | 2,269,538 | 49.0% |
| 2025-09-29 | 2,045,414 | 897,843 | 2,943,257 | 51.6% |
| 2025-09-22 | 1,446,570 | 702,934 | 2,149,504 | 48.1% |
| 2025-09-15 | 1,541,972 | 1,224,858 | 2,766,830 | 46.9% |
| 2025-09-08 | 2,556,055 | 1,467,317 | 4,023,372 | 53.0% |
| 2025-09-01 | 1,163,491 | 472,262 | 1,635,753 | 42.6% |
| 2025-08-25 | 1,199,153 | 859,107 | 2,058,260 | 43.2% |
| 2025-08-18 | 1,463,405 | 1,086,311 | 2,549,716 | 42.6% |
| 2025-08-11 | 1,740,554 | 1,351,064 | 3,091,618 | 47.1% |
| 2025-08-04 | 2,287,766 | 865,630 | 3,153,396 | 48.5% |
| 2025-07-28 | 3,114,631 | 1,324,354 | 4,438,985 | 48.8% |
| 2025-07-21 | 1,343,696 | 696,464 | 2,040,160 | 47.7% |
| 2025-07-14 | 1,154,969 | 546,037 | 1,701,006 | 41.3% |
| 2025-07-07 | 1,565,416 | 484,454 | 2,049,870 | 42.0% |
| 2025-06-30 | 1,252,018 | 478,064 | 1,730,082 | 48.3% |
| 2025-06-23 | 1,228,398 | 813,940 | 2,042,338 | 42.1% |
| 2025-06-16 | 808,441 | 687,143 | 1,495,584 | 43.9% |
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