Based on 361 hedge funds · latest filing: 2025 Q4 · updated quarterly
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Buying streak — 2 quarters in a row
For 2 consecutive quarters, more hedge funds added BIO than sold it. That's a consistent pattern of professional buying — not a one-time trade. When institutions keep buying quarter after quarter, it usually means they see a multi-year opportunity, not just a short-term momentum flip.
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High ownership — 81% of 3.0Y peak
81% of all-time peak
361 funds currently hold this stock — 81% of the 3.0-year high of 448 funds (reached 2023 Q4). Ownership is elevated but not yet at maximum concentration. Room to grow, but watch if the trend reverses.
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Outflows — 14% fewer funds vs a year ago
fund count last 6Q
57 fewer hedge funds hold BIO compared to a year ago (-14% decline). When institutions consistently reduce their exposure, it's worth exploring the underlying fundamental reasons driving them away.
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More sellers than buyers — 47% buying
166 buying186 selling
Last quarter: 186 funds reduced or exited vs 166 that bought or added. When more than half of active funds are selling, it's a caution flag — especially if the stock price hasn't moved down yet.
➡️
Steady new buyers — ~60 new funds per quarter
new funds entering per quarter
Funds opening this position for the first time: 69 → 54 → 59 → 60. A stable flow of new institutional buyers suggests ongoing interest without signs of either acceleration or slowdown.
🔒
70% of holders stayed for 2+ years
■ 70% conviction (2yr+)
■ 14% medium
■ 16% new
251 out of 361 hedge funds have held BIO for over 2 years without selling. Long-term investors are generally harder to shake out during market stress, creating a stable ownership base that limits the risk of sudden capitulation.
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Steady discovery — ~60 new funds/quarter
72 → 69 → 54 → 59 → 60 new funds/Q
New funds entering each quarter: 69 → 54 → 59 → 60. Consistent flow of new institutional buyers without clear acceleration or slowdown.
🏛️
Deep conviction — 73% of holders stayed 2+ years
■ 73% veterans
■ 9% 1-2yr
■ 18% new
Of 364 current holders: 266 (73%) have held for over 2 years without selling. These are not momentum buyers — they have lived through drawdowns and stayed. A large veteran base acts as a stabilizing force during selloffs.
✅
Strong quality — 39% AUM from major funds
39% from top-100 AUM funds
43 of 361 holders rank in the top 100 by AUM, accounting for 39% of total institutional value held. A meaningful share of the ownership value comes from the most well-resourced institutions.
Exit risk score 2.6/10 — low institutional crowding. Ownership is below peak levels, holder base is relatively sticky, and buying momentum is positive.