Most bought biotechnology stocks in Q4 2025
Discover which Biotechnology stocks institutional investors added to most aggressively over Q4 2025 versus the prior calendar quarter in our filings. Notable additions at the top of this list include MERUS N V (MRUS). These rankings aggregate SEC 13F filings from all institutional investors in our database.
Net share increases
Top symbols by net quarter-over-quarter share change (increases).
Most bought stocks
Net quarter-over-quarter share increases across all institutional filers.
| Symbol | Name | Net shares | Net value | New | Added | Trimmed | Sold out | Holding now |
|---|---|---|---|---|---|---|---|---|
| MRUS | MERUS N V | 76,496 | $1.9M | 10 | 0 | 0 | 2 | 10 |