Latest Period
Q1 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 Q1 2026
Institutions Reporting
23
Shares (Excl. Options)
15,659,047
Price
$1.15
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- Security type / class
- Equity / Common Stock, par value $0.0001 per share
- Symbol
- ADGM on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 15,659,047
- Total 13F value
- $17,662,157
- Portfolio coverage rank
- 0%
- Share change
- -908,415
- Value change
- -$957,154
- Number of holders
- 23
- Shares outstanding
- 27,656,417
- SEC-reported price per share
- $1.15
- Insider filing price
- $1.15
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.
- 23 institutions reported positions in Q1 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 21 to 23 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $17,215,301 to $17,662,157.
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 23 institutions filings for Q1 2026.
Security key
00534B100
Latest holder period
Q1 2026
13F holders
23
13D/G owners
6
CIK / CUSIP context first
Open Q1 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 | |||
| Sio Capital Management, LLC | 6.1% | $1,224,038 | 1,288,461 | Sio Capital Management, LLC | 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 | 5.7% | $1,205,447 | 1,205,447 | ADAR1 Capital Management, LLC | 31 Dec 2025 | |||
| RA CAPITAL MANAGEMENT, L.P. | 7.2% | 0% | $1,656,000 | 1,200,000 | 0% | RA Capital Management, L.P. | 30 Jun 2025 |
As of 31 Mar 2026, 23 institutional investors reported holding 15,659,047 shares of Adagio Medical Holdings, Inc. - Common Stock, par value $0.0001 per share (ADGM). This represents 57% of the company’s total 27,656,417 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
57%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| PERCEPTIVE ADVISORS LLC | 36% | 9,876,576 | 0% | 0.22% | $11,012,382 |
| Sio Capital Management, LLC | 4.7% | 1,288,461 | 0% | 0.21% | $1,481,730 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 4.6% | 1,258,501 | 0% | 0% | $1,447,276 |
| ADAR1 Capital Management, LLC | 4.4% | 1,205,447 | +4% | 0.08% | $1,386,264 |
| Alyeska Investment Group, L.P. | 4.2% | 1,159,615 | 0% | 0% | $1,333,557 |
| SILVERARC CAPITAL MANAGEMENT, LLC | 0.91% | 251,972 | -51% | 0.03% | $289,768 |
| Shaolin Capital Management LLC | 0.62% | 171,170 | 0% | 0.02% | $196,846 |
| GEODE CAPITAL MANAGEMENT, LLC | 0.45% | 125,241 | +83% | 0% | $144,027 |
| Affinity Asset Advisors, LLC | 0.29% | 80,000 | 0% | 0.01% | $92,000 |
| VANGUARD FIDUCIARY TRUST CO | 0.19% | 53,782 | 0% | 0% | $61,849 |
| VANGUARD CAPITAL MANAGEMENT LLC | 0.14% | 39,608 | 0% | 0% | $45,549 |
| Granite Investment Partners, LLC | 0.1% | 27,053 | 0% | $31,111 | |
| TORONTO DOMINION BANK | 0.09% | 25,000 | 0% | 0% | $28,750 |
| XTX Topco Ltd | 0.08% | 23,350 | +29% | 0% | $26,853 |
| NORTHERN TRUST CORP | 0.08% | 21,598 | 0% | 0% | $24,838 |
| Opaleye Management Inc. | 0.07% | 18,444 | 0% | 0% | $21,211 |
| RENAISSANCE TECHNOLOGIES LLC | 0.06% | 16,557 | 0% | $19,041 | |
| BANK OF AMERICA CORP /DE/ | 0.05% | 12,857 | +12% | 0% | $14,786 |
| Tower Research Capital LLC (TRC) | 0.01% | 2,202 | -73% | 0% | $2,532 |
| JPMORGAN CHASE & CO | 0% | 975 | 0% | $1,053 | |
| Crewe Advisors LLC | 0% | 500 | 0% | 0% | $575 |
| MORGAN STANLEY | 0% | 137 | 0% | 0% | $158 |
| CITIGROUP INC | 0% | 1 | 0% | $1 | |
| HRT FINANCIAL LP | 0% | 0 | -100% | $0 | |
| ARMISTICE CAPITAL, LLC | 0% | 0 | -100% | $0 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
7
Latest
Q1 2026
Rows shown
1-7 of 7
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 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 |