Based on 812 hedge funds · latest filing: 2026 Q1 · updated quarterly
📉
Selling streak — 1 quarter in a row
For 1 consecutive quarter, more hedge funds reduced or closed their MDB 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
812 funds currently hold this stock — 90% of the 3.0-year high of 898 funds (reached 2025 Q4). Ownership is elevated but not yet at maximum concentration. Room to grow, but watch if the trend reverses.
🚀
Fast accumulation — +26% more funds vs a year ago
fund count last 6Q
+166 new funds entered over the past year (+26% YoY). That's a rapid rush of institutional money. Fast accumulation often signals a major thesis — but it also means the stock could fall quickly if that thesis breaks.
🟡
Slight buying edge — 51% buying
477 buying467 selling
Last quarter: 477 funds bought or added vs 467 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.
⚠️
Fewer new buyers each quarter (-105 vs last Q)
new funds entering per quarter
Funds opening this position for the first time: 152 → 191 → 236 → 131. Each quarter fewer new institutions are entering. This usually means most funds that wanted in are already in — the stock is well-known but the pool of potential new buyers is shrinking.
🔒
52% of holders stayed for 2+ years
■ 52% conviction (2yr+)
■ 24% medium
■ 24% new
423 out of 812 hedge funds have held MDB 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 -47%
Last quarter: funds added -7% more shares while total portfolio value only changed -47%. Institutions were buying while the price was falling — a high-conviction accumulation signal. They're deliberately loading up on the dip.
➡️
Steady discovery — ~131 new funds/quarter
105 → 152 → 191 → 236 → 131 new funds/Q
New funds entering each quarter: 152 → 191 → 236 → 131. Consistent flow of new institutional buyers without clear acceleration or slowdown.
🏛️
Veteran-anchored — 62% veterans vs 28% newcomers
■ 62% veterans
■ 10% 1-2yr
■ 28% new
Entry-cohort mix of 871 holders: 536 (62%) are 2+ year veterans, 89 entered 1–2 years ago, and 246 (28%) joined within the past year. A veteran-weighted cap table skews toward institutional memory over fresh momentum.
🏆
Elite ownership — 40% AUM from top-100 funds
40% from top-100 AUM funds
67 of 807 holders are among the 100 largest funds by AUM, controlling 40% of total institutional value in MDB. 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 3.6/10 — low institutional crowding. Ownership is below peak levels, holder base is relatively sticky, and buying momentum is positive.