ADGM Institutional Ownership & Shareholders
ADAGIO MEDICAL HOLDINGS INC (ADGM) is currently held by 22 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $9.87M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Perceptive Advisors Llc is currently the largest disclosed institutional shareholder of ADGM tracked by InsiderSet, reporting ownership valued at approximately $6.44M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $640,990.431, representing an estimated loss of -90.05% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 99% of the total disclosed ADGM value among the investors covered in this analysis. Major shareholders include Perceptive Advisors Llc, Adage Capital Partners Gp, L.L.C., Adar1 Capital Management, Llc, and several other long-term asset managers with concentrated positions in ADAGIO MEDICAL HOLDINGS INC (ADGM).
This page ranks the largest institutional ADGM shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
22
Total Reported Value
$9.87M
Largest Holder
Perceptive Advisors Llc
Largest Position
$6.44M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
28
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Perceptive Advisors Llc | 0.10% | 9,876,586 | $6,439,534 | $640,990 | -$5,798,544 | -90.05% | |
| Adage Capital Partners Gp, L.L.C. | 0.00% | 1,258,501 | $820,039 | $81,677 | -$738,362 | -90.04% | |
| Adar1 Capital Management, Llc | 0.04% | 1,205,447 | $785,469 | $78,234 | -$707,235 | -90.04% | |
| Alyeska Investment Group, L.P. | 0.00% | 1,159,615 | $755,605 | $75,259 | -$680,346 | -90.04% | |
| Sio Capital Management, Llc | 0.08% | 698,989 | $455,461 | $45,364 | -$410,097 | -90.04% | |
| Silverarc Capital Management, Llc | 0.02% | 224,360 | $146,193 | $14,561 | -$131,632 | -90.04% | |
| Shaolin Capital Management Llc | 0.01% | 171,170 | $111,534 | $11,109 | -$100,425 | -90.04% | |
| Geode Capital Management, Llc | 0.00% | 661,191 | $101,162 | $42,911 | -$58,251 | -57.58% | |
| Vanguard Capital Management Llc | 0.00% | 108,954 | $71,038 | $7,071 | -$63,967 | -90.05% | |
| Affinity Asset Advisors, Llc | 0.00% | 80,000 | $52,128 | $5,192 | -$46,936 | -90.04% | |
| Vanguard Fiduciary Trust Co | 0.00% | 53,782 | $35,066 | $3,490 | -$31,576 | -90.05% | |
| Northern Trust Corp | 0.00% | 30,875 | $20,118 | $2,004 | -$18,114 | -90.04% | |
| Toronto Dominion Bank | 0.00% | 25,000 | $16,300 | $1,623 | -$14,678 | -90.05% | |
| Opaleye Management Inc. | 0.00% | 18,444 | $13,353 | $1,197 | -$12,156 | -91.04% | |
| Xtx Topco Ltd | 0.00% | 18,153 | $11,828 | $1,178 | -$10,650 | -90.04% | |
| Citadel Advisors Llc | 0.00% | 16,155 | $10,527 | $1,048 | -$9,479 | -90.04% | |
| Hrt Financial Lp | 0.00% | 13,705 | $8,000 | $889 | -$7,111 | -88.88% | |
| Bank Of America Corp | 0.00% | 11,531 | $7,507 | $748 | -$6,759 | -90.03% | |
| Tower Research Capital Llc (Trc) | 0.00% | 6,454 | $4,205 | $419 | -$3,786 | -90.04% | |
| Ubs Group Ag | 0.00% | 2,268 | $1,479 | $147 | -$1,332 | -90.05% | |
| Crewe Advisors Llc | 0.00% | 500 | $326 | $32 | -$294 | -90.05% | |
| Morgan Stanley | 0.00% | 137 | $89 | $9 | -$80 | -90.01% |
Frequently asked questions about ADGM
Who are the largest institutional holders of ADGM?
The largest institutional holders of ADGM reported in the latest SEC Form 13F filings include Perceptive Advisors Llc, Adage Capital Partners Gp, L.L.C., Adar1 Capital Management, Llc, Alyeska Investment Group, L.P., and Sio Capital Management, Llc. InsiderSet ranks institutional holders by their latest reported ADGM position.
What is ADGM institutional ownership?
This page tracks ADGM positions reported by institutional investment managers through SEC Form 13F. ADAGIO MEDICAL HOLDINGS INC (ADGM) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own ADGM?
InsiderSet currently tracks 22 institutional managers reporting ADGM holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of ADGM shareholders.
How much ADGM stock do institutions own?
Institutional investment managers disclosed approximately $9.87M in ADGM holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was ADGM institutional ownership last updated?
The latest ADGM institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional ADGM holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its ADGM position after the reporting date.
Are institutions buying or selling ADGM?
Institutional buying and selling can be analyzed by comparing ADGM positions across consecutive 13F reporting periods. InsiderSet's ADGM Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View ADGM ownership changes.
How has ADGM institutional ownership changed over time?
InsiderSet tracks ADGM institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.