Based on 221 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 ATRC 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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At the ownership peak (100% of max)
100% of all-time peak
221 hedge funds hold ATRC right now — the highest count in 3.0 years. When ownership is this concentrated, any bad news can trigger a chain reaction: one big fund sells, others follow. This is a classic 'crowded trade' — high popularity doesn't equal safety.
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Steady growth — +8% more funds vs a year ago
fund count last 6Q
+17 new funds entered over the past year (+8% YoY). Gradual, steady growth in institutional ownership is generally a healthy signal — not a speculative rush, but consistent conviction.
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Slight buying edge — 58% buying
127 buying92 selling
Last quarter: 127 funds bought or added vs 92 that reduced or exited. It's nearly a 50/50 split — some institutions are convinced, others are taking profits. This mixed picture is normal near price highs.
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More new buyers each quarter (+8 vs last Q)
new funds entering per quarter
Funds opening a new ATRC position: 35 → 18 → 29 → 37. A growing influx of new institutional buyers means the asset is still gathering momentum — the consensus hasn't fully saturated yet.
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66% of holders stayed for 2+ years
■ 66% conviction (2yr+)
■ 20% medium
■ 14% new
146 out of 221 hedge funds have held ATRC 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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Growing discovery — still being found
36 → 35 → 18 → 29 → 37 new funds/Q
New funds entering each quarter: 35 → 18 → 29 → 37. A growing number of institutions are discovering ATRC each quarter. The narrative is still spreading — leaving room for ongoing capital accumulation.
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Deep conviction — 72% of holders stayed 2+ years
■ 72% veterans
■ 12% 1-2yr
■ 16% new
Of 221 current holders: 159 (72%) 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.
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Elite ownership — 45% AUM from top-100 funds
45% from top-100 AUM funds
41 of 221 holders are among the 100 largest funds by AUM, controlling 45% of total institutional value in ATRC. 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.