ADAGIO MEDICAL HOLDINGS INC (ADGM) Institutional Shareholders
ADAGIO MEDICAL HOLDINGS INC (ADGM) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $9.83M in ADGM holdings during the latest filing period.
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 $4.77M, representing an estimated loss of -26.00% 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
24
Total Reported Value
$9.83M
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 | $4,765,453 | -$1,674,081 | -26.00% | |
| Adage Capital Partners Gp, L.L.C. | 0.00% | 1,258,501 | $820,039 | $607,227 | -$212,812 | -25.95% | |
| Adar1 Capital Management, Llc | 0.04% | 1,205,447 | $785,469 | $581,628 | -$203,841 | -25.95% | |
| Alyeska Investment Group, L.P. | 0.00% | 1,159,615 | $755,605 | $559,514 | -$196,091 | -25.95% | |
| Sio Capital Management, Llc | 0.08% | 698,989 | $455,461 | $337,262 | -$118,199 | -25.95% | |
| Silverarc Capital Management, Llc | 0.02% | 224,360 | $146,193 | $108,254 | -$37,939 | -25.95% | |
| Shaolin Capital Management Llc | 0.01% | 171,170 | $111,534 | $82,590 | -$28,944 | -25.95% | |
| Vanguard Capital Management Llc | 0.00% | 108,954 | $71,038 | $52,570 | -$18,468 | -26.00% | |
| Affinity Asset Advisors, Llc | 0.00% | 80,000 | $52,128 | $38,600 | -$13,528 | -25.95% | |
| Geode Capital Management, Llc | 0.00% | 79,115 | $51,550 | $38,173 | -$13,377 | -25.95% | |
| Vanguard Fiduciary Trust Co | 0.00% | 53,782 | $35,066 | $25,950 | -$9,116 | -26.00% | |
| Northern Trust Corp | 0.00% | 30,875 | $20,118 | $14,897 | -$5,221 | -25.95% | |
| Toronto Dominion Bank | 0.00% | 25,000 | $16,300 | $12,063 | -$4,238 | -26.00% | |
| Opaleye Management Inc. | 0.00% | 18,444 | $13,353 | $8,899 | -$4,454 | -33.35% | |
| Xtx Topco Ltd | 0.00% | 18,153 | $11,828 | $8,759 | -$3,069 | -25.95% | |
| Citadel Advisors Llc | 0.00% | 16,155 | $10,527 | $7,795 | -$2,732 | -25.95% | |
| Citigroup Inc | 0.00% | 13,255 | $8,637 | $6,396 | -$2,241 | -25.95% | |
| Hrt Financial Lp | 0.00% | 13,705 | $8,000 | $6,613 | -$1,387 | -17.34% | |
| Bank Of America Corp | 0.00% | 11,531 | $7,507 | $5,564 | -$1,943 | -25.89% | |
| Tower Research Capital Llc (Trc) | 0.00% | 6,454 | $4,205 | $3,114 | -$1,091 | -25.94% | |
| Ubs Group Ag | 0.00% | 2,268 | $1,479 | $1,094 | -$385 | -26.01% | |
| Crewe Advisors Llc | 0.00% | 500 | $326 | $241 | -$85 | -26.00% | |
| Morgan Stanley | 0.00% | 137 | $89 | $66 | -$23 | -25.73% | |
| Barclays Plc | 0.00% | 23 | $15 | $11 | -$4 | -26.02% |
Frequently asked questions about ADGM
Who owns the most ADGM stock?
The largest holders of ADGM are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for ADAGIO MEDICAL HOLDINGS INC (ADGM).
Is ADGM widely held by superinvestors?
Many widely followed stocks like ADGM appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly ADGM is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.