Latest Period
Q2 2026
Security Snapshot
Adagio Medical Holdings, Inc. - Common Stock, par value $0.0001 per share (ADGM) Institutional Ownership
CUSIP: 00534B100
13F Institutional Holders and Ownership History from Q3 2024 to Q2 2026
Institutions Reporting
24
Shares (Excl. Options)
15,073,018
Price
$0.65
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- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- ADGM on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 15,073,018
- Total 13F value
- $9,826,000
- Portfolio coverage rank
- 0%
- Share change
- -586,029
- Value change
- -$404,909
- Number of holders
- 24
- Shares outstanding
- 22,323,093
- SEC-reported price per share
- $0.65
- Insider filing price
- $0.65
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ADGM - Adagio Medical Holdings, Inc. - Common Stock, par value $0.0001 per share is tracked under CUSIP 00534B100.
- 24 institutions reported positions in Q2 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 23 to 24 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $17,662,157 to $9,826,000.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 24 institutions filings for Q2 2026.
Security key
00534B100
Latest holder period
Q2 2026
13F holders
24
13D/G owners
6
CIK / CUSIP context first
Open Q2 2026 holders
ADGM full holder history
Adagio Medical Holdings, Inc. SEC filings
Adagio Medical Holdings, Inc. company facts
Adagio Medical Holdings, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 00534B100:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
6
Security
ADGM
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 55% | -3.6% | $19,611,718 | 15,321,655 | 0% | Perceptive Advisors LLC | 31 Mar 2026 | |
| Alyeska Investment Group, L.P. | 9.9% | $1,991,945 | 2,096,784 | Alyeska Investment Group, L.P. | 31 Dec 2025 | |||
| Adage Capital Management, L.P. | 5.7% | -17% | $1,610,881 | +$256,000 | 1,258,501 | +19% | Adage Capital Management, L.P. | 31 Mar 2026 |
| ADAR1 Capital Management, LLC | 5.4% | -5% | $785,710 | 1,205,447 | 0% | ADAR1 Capital Management, LLC | 30 Jun 2026 | |
| RA CAPITAL MANAGEMENT, L.P. | 7.2% | 0% | $1,656,000 | 1,200,000 | 0% | RA Capital Management, L.P. | 30 Jun 2025 | |
| Sio Capital Management, LLC | 3.2% | -49% | $455,741 | -$384,336 | 698,989 | -46% | Sio Capital Management, LLC | 30 Jun 2026 |
As of 30 Jun 2026, 24 institutional investors reported holding 15,073,018 shares of Adagio Medical Holdings, Inc. - Common Stock, par value $0.0001 per share (ADGM). This represents 68% of the company’s total 22,323,093 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
68%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 44% | 9,876,586 | +0% | 0.1% | $6,439,534 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 5.6% | 1,258,501 | 0% | 0% | $820,039 |
| ADAR1 Capital Management, LLC | 5.4% | 1,205,447 | 0% | 0.04% | $785,469 |
| Alyeska Investment Group, L.P. | 5.2% | 1,159,615 | 0% | 0% | $755,605 |
| Sio Capital Management, LLC | 3.1% | 698,989 | -46% | 0.08% | $455,461 |
| SILVERARC CAPITAL MANAGEMENT, LLC | 1% | 224,360 | -11% | 0.02% | $146,193 |
| Shaolin Capital Management LLC | 0.77% | 171,170 | 0% | 0.01% | $111,534 |
| VANGUARD CAPITAL MANAGEMENT LLC | 0.49% | 108,954 | +175% | 0% | $71,038 |
| Affinity Asset Advisors, LLC | 0.36% | 80,000 | 0% | 0% | $52,128 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.35% | 79,115 | -37% | 0% | $51,550 |
| VANGUARD FIDUCIARY TRUST CO | 0.24% | 53,782 | 0% | 0% | $35,066 |
| NORTHERN TRUST CORP | 0.14% | 30,875 | +43% | 0% | $20,118 |
| TORONTO DOMINION BANK | 0.11% | 25,000 | 0% | 0% | $16,300 |
| Opaleye Management Inc. | 0.08% | 18,444 | 0% | 0% | $13,353 |
| XTX Topco Ltd | 0.08% | 18,153 | -22% | 0% | $11,828 |
| CITADEL ADVISORS LLC | 0.07% | 16,155 | 0% | $10,527 | |
| HRT FINANCIAL LP | 0.06% | 13,705 | 0% | $8,000 | |
| CITIGROUP INC | 0.06% | 13,255 | +1325400% | 0% | $8,637 |
| BANK OF AMERICA CORP /DE/ | 0.05% | 11,531 | -10% | 0% | $7,507 |
| Tower Research Capital LLC (TRC) | 0.03% | 6,454 | +193% | 0% | $4,205 |
| UBS Group AG | 0.01% | 2,267 | 0% | $1,478 | |
| Crewe Advisors LLC | 0% | 500 | 0% | 0% | $326 |
| MORGAN STANLEY | 0% | 137 | 0% | 0% | $89 |
| BARCLAYS PLC | 0% | 23 | 0% | $15 | |
| Granite Investment Partners, LLC | 0% | 0 | -100% | $0 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
8
Latest
Q2 2026
Rows shown
1-8 of 8
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q2 | 15,073,018 | $9,826,000 | -$404,909 | $0.65 | 24 |
| 2026 Q1 | 15,659,047 | $17,662,157 | -$957,154 | $1.15 | 23 |
| 2025 Q4 | 16,553,523 | $17,215,301 | +$4,898,407 | $1.04 | 21 |
| 2025 Q3 | 11,638,540 | $22,578,784 | -$378,507 | $1.94 | 15 |
| 2025 Q2 | 11,882,184 | $14,927,921 | +$160,006 | $1.30 | 13 |
| 2025 Q1 | 11,593,031 | $9,331,190 | +$632,839 | $0.80 | 14 |
| 2024 Q4 | 10,801,797 | $11,342,157 | -$3,360,595 | $1.05 | 15 |
| 2024 Q3 | 12,019,550 | $31,010,438 | +$31,010,438 | $2.58 | 12 |