ADAGIO MEDICAL HOLDINGS INC (ADGM) Institutional Ownership Changes & 13F Activity
ADAGIO MEDICAL HOLDINGS INC (ADGM). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Perceptive Advisors Llc, Sio Capital Management, Llc, Vanguard Capital Management Llc, Geode Capital Management, Llc, and Silverarc Capital Management, Llc.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Citadel Advisors Llc | Buy | +16,155 | — | 16,155 | $10.53K | Q2 2026 | Sep 02, 2026 |
| Perceptive Advisors Llc | Buy | +6,095,756 | +161.2% | 9,876,586 | $6.44M | Q2 2026 | Aug 14, 2026 |
| Sio Capital Management, Llc | Sell | -589,472 | -45.8% | 698,989 | $455.46K | Q2 2026 | Aug 14, 2026 |
| Hrt Financial Lp | Buy | +13,705 | — | 13,705 | $8.00K | Q2 2026 | Aug 14, 2026 |
| Xtx Topco Ltd | Sell | -5,197 | -22.3% | 18,153 | $11.83K | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -1,326 | -10.3% | 11,531 | $7.51K | Q2 2026 | Aug 14, 2026 |
| Barclays Plc | Buy | +23 | — | 23 | $15.00 | Q2 2026 | Aug 14, 2026 |
| Vanguard Capital Management Llc | Buy | +69,346 | +175.1% | 108,954 | $71.04K | Q2 2026 | Aug 13, 2026 |
| Silverarc Capital Management, Llc | Sell | -27,612 | -11.0% | 224,360 | $146.19K | Q2 2026 | Aug 13, 2026 |
| Northern Trust Corp | Buy | +9,277 | +43.0% | 30,875 | $20.12K | Q2 2026 | Aug 13, 2026 |
| Ubs Group Ag | Buy | +2,268 | — | 2,268 | $1.48K | Q2 2026 | Aug 13, 2026 |
| Geode Capital Management, Llc | Sell | -46,126 | -36.8% | 79,115 | $51.55K | Q2 2026 | Aug 12, 2026 |
| Tower Research Capital Llc (Trc) | Buy | +4,252 | +193.1% | 6,454 | $4.21K | Q2 2026 | Aug 11, 2026 |
| Citigroup Inc | Buy | +13,254 | +1325400.0% | 13,255 | $8.64K | Q2 2026 | Aug 03, 2026 |
| Renaissance Technologies LLC | Sell | -16,557 | -100.0% | 0 | $0.00 | Q2 2026 | May 14, 2026 |
| Granite Investment Partners, Llc | Sell | -27,053 | -100.0% | 0 | $0.00 | Q2 2026 | Apr 30, 2026 |
Frequently asked questions about ADGM activity
Which institutional owners are buying ADGM?
Institutional owners buying ADGM include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in ADGM activity?
"Buy" means an investor increased their reported position in ADGM compared to the prior reporting period. This reflects growing exposure to ADAGIO MEDICAL HOLDINGS INC (ADGM) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in ADGM increasing?
Institutional interest in ADGM can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.