Institutional Ownership
Biogen Inc
CUSIP 09062X103COMBIIBQ1 2026
Shares Short
6.00M
As of Jul 15, 2026
Days to Cover
3.45
Short shares ÷ avg daily volume
Change vs Prior
+4.8%
vs previous settlement
Avg Daily Volume
1.74M
FINRA reported ADV
Short Interest History
17 settlements on record · FINRA consolidated
Higher short interest is bearish: increases show red, decreases green.
| Settlement | Shares Short | Prior | Change | Avg Daily Vol | Days to Cover |
|---|---|---|---|---|---|
| Jul 15, 2026 | 6.00M | 5.72M | +4.8% | 1.74M | 3.45 |
| Jun 30, 2026 | 5.72M | 5.19M | +10.3% | 1.38M | 4.14 |
| Jun 15, 2026 | 5.19M | 4.77M | +8.8% | 918.7K | 5.65 |
| May 29, 2026 | 4.77M | 4.73M | +0.9% | 1.06M | 4.49 |
| May 15, 2026 | 4.73M | 4.48M | +5.7% | 1.12M | 4.21 |
| Apr 30, 2026 | 4.48M | 4.41M | +1.4% | 1.25M | 3.59 |
| Apr 15, 2026 | 4.41M | 3.83M | +15.4% | 1.44M | 3.07 |
| Mar 31, 2026 | 3.83M | 4.33M | -11.7% | 1.10M | 3.47 |
| Mar 13, 2026 | 4.33M | 4.20M | +3.1% | 842.1K | 5.15 |
| Feb 27, 2026 | 4.20M | 4.55M | -7.5% | 908.3K | 4.63 |
| Feb 13, 2026 | 4.55M | 4.69M | -3.1% | 1.85M | 2.45 |
| Jan 30, 2026 | 4.69M | 4.68M | +0.3% | 1.30M | 3.62 |