ALNY US Equity
Alnylam Pharmaceuticals, Inc.Health Care · Pharmaceutical Preparations · CIK 1178670 · FY ends Dec 31$242.61
+14.00 (+6.12%)
USD · as of 2026-08-19 · marketstack
Short interest· FINRA consolidated · settlement 2026-07-31
6 settlement cycles| Shares short | 4.8M |
| % of shares out | 3.6% |
| Days to cover | 2.2 |
| Δ vs 2026-07-15 | -16.8% |
bars = shares short · line = days to cover (own scale)
| Settlement | Shares short | Δ vs prior | Avg daily volume | Days to cover |
|---|
| 2026-07-31 | 4,803,194 | -16.8% | 2,204,446 | 2.2 |
| 2026-07-15 | 5,773,373 | -0.5% | 1,782,477 | 3.2 |
| 2026-06-30 | 5,799,788 | +6.7% | 1,373,085 | 4.2 |
| 2026-06-15 | 5,437,337 | +2.6% | 1,142,712 | 4.8 |
| 2026-05-29 | 5,300,015 | -1.8% | 917,637 | 5.8 |
| 2026-05-15 | 5,398,804 | +13.1% | 1,052,011 | 5.1 |
FINRA Rule 4560 · twice monthly, published ~a week later.
Output of a disclosed model — assumptions may be wrong. Research, not investment advice. See the Disclaimer.
