| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| AI Biotechnology LLC | 20% | $20,629,570 | 14,326,090 | AI Biotechnology LLC | 21 May 2025 | |||
| Athanor Capital | 16% | $46,209,794 | 11,581,402 | Athanor Capital | 29 Dec 2025 | |||
| Venrock Healthcare Capital Partners III, L.P. | 9.9% | 0% | $8,322,892 | -$888,073 | 6,353,353 | -9.6% | Venrock Healthcare Capital Partners III, L.P. | 30 Jun 2025 |
| JPMORGAN CHASE & CO | 7.5% | $5,653,623 | 4,672,416 | JPMORGAN CHASE & CO. | 30 Jun 2025 | |||
| GREAT POINT PARTNERS LLC | 5.9% | +15% | $16,522,977 | +$2,796,037 | 3,815,930 | +20% | Great Point Partners, LLC | 30 Sep 2025 |
| RA CAPITAL MANAGEMENT, L.P. | 4.9% | $4,633,204 | 3,217,503 | RA Capital Management, L.P. | 31 Dec 2024 | |||
| PFIZER INC | 4.6% | $4,276,832 | 2,970,022 | Pfizer Inc. 13-5315170 | 31 Dec 2024 | |||
| ADAR1 Capital Management, LLC | 3.2% | $2,991,241 | 2,077,251 | ADAR1 Capital Management, LLC | 31 Dec 2024 | |||
| Deep Track Capital, LP | 0.4% | -96% | $1,121,531 | -$18,867,975 | 259,014 | -94% | Deep Track Capital, LP | 30 Sep 2025 |
As of 30 Sep 2025, 66 institutional investors reported holding 41,145,976 shares of Zura Bio Ltd - Class A Ordinary Shares, par value $0.0001 per share (ZURA). This represents 56% of the company’s total 73,766,892 outstanding shares.
The largest institutional shareholders of Zura Bio Ltd - Class A Ordinary Shares, par value $0.0001 per share (ZURA) together control 53% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| SUVRETTA CAPITAL MANAGEMENT, LLC | 7.4% | 5,472,891 | +13% | 0.72% | $23,697,618 |
| VR ADVISER, LLC | 6.3% | 4,631,216 | 0% | 1.1% | $20,053,165 |
| JPMORGAN CHASE & CO | 6.3% | 4,624,199 | -0.77% | 0% | $20,022,782 |
| GREAT POINT PARTNERS LLC | 5.2% | 3,815,930 | +20% | 6.9% | $16,522,977 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 4.1% | 3,045,444 | 0.02% | $13,186,773 | |
| Pfizer Inc | 4% | 2,970,022 | 0% | 2.9% | $12,860,195 |
| BRAIDWELL LP | 3.4% | 2,472,806 | 0% | 0.32% | $10,707,250 |
| Ikarian Capital, LLC | 2.9% | 2,132,322 | 2.1% | $9,232,953 | |
| ARMISTICE CAPITAL, LLC | 2.1% | 1,560,000 | +1.6% | 0.21% | $6,754,800 |
| Affinity Asset Advisors, LLC | 1.7% | 1,274,351 | +471% | 0.51% | $5,517,940 |
| BOOTHBAY FUND MANAGEMENT, LLC | 1.1% | 824,078 | 0.09% | $3,568,258 | |
| Point72 Asset Management, L.P. | 0.98% | 726,328 | -69% | 0.01% | $3,145,000 |
| SILVERARC CAPITAL MANAGEMENT, LLC | 0.98% | 720,452 | 0.45% | $3,119,557 | |
| ADAR1 Capital Management, LLC | 0.88% | 652,154 | -35% | 0.28% | $2,823,827 |
| MILLENNIUM MANAGEMENT LLC | 0.8% | 589,700 | -25% | 0% | $2,553,401 |
| FMR LLC | 0.72% | 531,286 | -6.7% | 0% | $2,300,468 |
| VANGUARD GROUP INC | 0.7% | 517,144 | 0% | 0% | $2,239,234 |
| AMERIPRISE FINANCIAL INC | 0.68% | 500,000 | 0% | $2,165,000 | |
| GEODE CAPITAL MANAGEMENT, LLC | 0.55% | 405,304 | -0.47% | 0% | $1,755,635 |
| BlackRock, Inc. | 0.5% | 365,674 | -37% | 0% | $1,583,368 |
| UBS Group AG | 0.41% | 305,329 | +878% | 0% | $1,322,075 |
| Atika Capital Management LLC | 0.37% | 276,000 | 0.1% | $1,195,080 | |
| Deep Track Capital, LP | 0.35% | 259,014 | -85% | 0.03% | $1,121,531 |
| RENAISSANCE TECHNOLOGIES LLC | 0.35% | 255,400 | +25% | 0% | $1,105,882 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 0.34% | 247,747 | +110% | 0% | $1,072,745 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 702 | $3,678 | -$2,979 | $5.24 | 1 |
| 2025 Q3 | 41,145,976 | $178,160,287 | +$26,671,383 | $4.33 | 66 |
| 2025 Q2 | 35,347,572 | $37,112,793 | -$12,588,212 | $1.05 | 62 |
| 2025 Q1 | 45,725,666 | $58,985,346 | +$1,915,127 | $1.29 | 74 |
| 2024 Q4 | 42,890,401 | $107,244,382 | -$472,426 | $2.50 | 87 |
| 2024 Q3 | 37,204,097 | $151,039,161 | +$13,196,426 | $4.06 | 77 |
| 2024 Q2 | 32,818,331 | $114,851,034 | +$63,732,200 | $3.50 | 55 |
| 2024 Q1 | 14,795,561 | $37,551,435 | -$1,318,315 | $2.57 | 43 |
| 2023 Q4 | 15,148,165 | $70,695,884 | +$2,995,975 | $4.67 | 43 |
| 2023 Q3 | 14,140,309 | $93,326,247 | +$8,351,323 | $6.60 | 41 |
| 2023 Q2 | 12,843,918 | $105,028,129 | +$104,999,517 | $8.20 | 38 |
| 2023 Q1 | 25,742 | $24,692 | +$24,692 | $10.00 | 3 |