Based on 1565 hedge funds · latest filing: 2025 Q4 · updated quarterly
📉
Selling streak — 3 quarters in a row
For 3 consecutive quarters, more hedge funds reduced or closed their ZTS positions than added to them. Sustained institutional selling is a meaningful warning sign — these are professionals with deep research teams collectively deciding to exit.
📊
High ownership — 90% of 3.0Y peak
90% of all-time peak
1,565 funds currently hold this stock — 90% of the 3.0-year high of 1,740 funds (reached 2025 Q1). Ownership is elevated but not yet at maximum concentration. Room to grow, but watch if the trend reverses.
📉
Outflows — 9% fewer funds vs a year ago
fund count last 6Q
159 fewer hedge funds hold ZTS compared to a year ago (-9% decline). When institutions consistently reduce their exposure, it's worth exploring the underlying fundamental reasons driving them away.
🔴
Heavy selling pressure — only 36% buying
622 buying1115 selling
Last quarter: 1,115 funds sold vs only 622 buyers. This is widespread institutional distribution — not a few funds rebalancing, but a broad exit. High conviction bearish signal.
📈
More new buyers each quarter (+78 vs last Q)
new funds entering per quarter
Funds opening a new ZTS position: 159 → 157 → 122 → 200. A growing influx of new institutional buyers means the asset is still gathering momentum — the consensus hasn't fully saturated yet.
🔒
70% of holders stayed for 2+ years
■ 70% conviction (2yr+)
■ 16% medium
■ 14% new
1,096 out of 1,565 hedge funds have held ZTS 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.
💎
Buying through price weakness — shares +7%, value -16%
Last quarter: funds added +7% more shares while total portfolio value only changed -16%. Institutions were buying while the price was falling — a high-conviction accumulation signal. They're deliberately loading up on the dip.
➡️
Steady discovery — ~200 new funds/quarter
202 → 159 → 157 → 122 → 200 new funds/Q
New funds entering each quarter: 159 → 157 → 122 → 200. Consistent flow of new institutional buyers without clear acceleration or slowdown.
🏛️
Deep conviction — 71% of holders stayed 2+ years
■ 71% veterans
■ 10% 1-2yr
■ 19% new
Of 1,612 current holders: 1,145 (71%) 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.
🏆
Elite ownership — 49% AUM from top-100 funds
49% from top-100 AUM funds
52 of 1565 holders are among the 100 largest funds by AUM, controlling 49% of total institutional value in ZTS. When the biggest players dominate the cap table, it signifies deep institutional support — since mega-funds deploy the most rigorous due diligence and capital.
Exit risk score 3.5/10 — low institutional crowding. Ownership is below peak levels, holder base is relatively sticky, and buying momentum is positive.