COPENHAGEN, G7
IO BIOTECH, INC.IOBTQ— Latest position per institution from SEC 13F filings
15
Institutional holders
26.46M
Total shares held
29.32M
Estimated value
1.32M
Avg. position size
VIVO CAPITAL, LLC
CIK 1674712
Shares
6.17M
Value
8.58M
Filed
Jun 30, 2025
SAMSARA BIOCAPITAL, LLC
CIK 1744967
Shares
3.64M
Value
3.82M
Filed
Sep 30, 2024
NOVO HOLDINGS A/S
CIK 1388325
Shares
2.51M
Value
1.53M
Filed
Dec 31, 2025
AVORO CAPITAL ADVISORS LLC
CIK 1633313
Shares
2.06M
Value
2.84M
Filed
Sep 30, 2023
PFM HEALTH SCIENCES, LP
CIK 1442756
Shares
1.97M
Value
2.74M
Filed
Jun 30, 2025
ARMISTICE CAPITAL, LLC
CIK 1601086
Shares
1.54M
Value
1.81M
Filed
Jun 30, 2024
IKARIAN CAPITAL, LLC
CIK 1778253
Shares
1.39M
Value
81.39K
Filed
Mar 31, 2026
RA CAPITAL MANAGEMENT, L.P.
CIK 1346824
Shares
1.13M
Value
2.59M
Filed
Dec 31, 2022
ALYESKA INVESTMENT GROUP, L.P.
CIK 1453072
Shares
987.65K
Value
1.16M
Filed
Jun 30, 2024
PIVOTAL BIOVENTURE PARTNERS INVESTMENT ADVISOR LLC
CIK 1844645
Shares
864.20K
Value
1.20M
Filed
Jun 30, 2025
BANK OF AMERICA CORP /DE/
CIK 70858
Shares
799.95K
Value
486.37K
Filed
Dec 31, 2025
LOGOS GLOBAL MANAGEMENT LP
CIK 1792126
Shares
493.83K
Value
518.52K
Filed
Sep 30, 2024
BOOTHBAY FUND MANAGEMENT, LLC
CIK 1549230
Shares
451.85K
Value
26.52K
Filed
Mar 31, 2026
DAUNTLESS INVESTMENT GROUP, LLC
CIK 2044285
Shares
451.64K
Value
275K
Filed
Dec 31, 2025
CAPITAL WORLD INVESTORS
CIK 1422849
Shares
418.50K
Value
782.59K
Filed
Mar 31, 2023
GSA CAPITAL PARTNERS LLP
CIK 1362033
Shares
348.35K
Value
20.00
Filed
Mar 31, 2026
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.
CIK 1536186
Shares
347.41K
Value
482.90K
Filed
Jun 30, 2025
FMR LLC
CIK 315066
Shares
314.60K
Value
368.08K
Filed
Jun 30, 2024
MARSHALL WACE, LLP
CIK 1318757
Shares
301.29K
Value
18.08K
Filed
Mar 31, 2026
XTX TOPCO LTD
CIK 1828301
Shares
265.79K
Value
15.60K
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | VIVO CAPITAL, LLC | 1674712 | 6.17M | 8.58M | Jun 30, 2025 |
| 2 | SAMSARA BIOCAPITAL, LLC | 1744967 | 3.64M | 3.82M | Sep 30, 2024 |
| 3 | NOVO HOLDINGS A/S | 1388325 | 2.51M | 1.53M | Dec 31, 2025 |
| 4 | AVORO CAPITAL ADVISORS LLC | 1633313 | 2.06M | 2.84M | Sep 30, 2023 |
| 5 | PFM HEALTH SCIENCES, LP | 1442756 | 1.97M | 2.74M | Jun 30, 2025 |
| 6 | ARMISTICE CAPITAL, LLC | 1601086 | 1.54M | 1.81M | Jun 30, 2024 |
| 7 | IKARIAN CAPITAL, LLC | 1778253 | 1.39M | 81.39K | Mar 31, 2026 |
| 8 | RA CAPITAL MANAGEMENT, L.P. | 1346824 | 1.13M | 2.59M | Dec 31, 2022 |
| 9 | ALYESKA INVESTMENT GROUP, L.P. | 1453072 | 987.65K | 1.16M | Jun 30, 2024 |
| 10 | PIVOTAL BIOVENTURE PARTNERS INVESTMENT ADVISOR LLC | 1844645 | 864.20K | 1.20M | Jun 30, 2025 |
| 11 | BANK OF AMERICA CORP /DE/ | 70858 | 799.95K | 486.37K | Dec 31, 2025 |
| 12 | LOGOS GLOBAL MANAGEMENT LP | 1792126 | 493.83K | 518.52K | Sep 30, 2024 |
| 13 | BOOTHBAY FUND MANAGEMENT, LLC | 1549230 | 451.85K | 26.52K | Mar 31, 2026 |
| 14 | DAUNTLESS INVESTMENT GROUP, LLC | 2044285 | 451.64K | 275K | Dec 31, 2025 |
| 15 | CAPITAL WORLD INVESTORS | 1422849 | 418.50K | 782.59K | Mar 31, 2023 |
| 16 | GSA CAPITAL PARTNERS LLP | 1362033 | 348.35K | 20.00 | Mar 31, 2026 |
| 17 | LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | 1536186 | 347.41K | 482.90K | Jun 30, 2025 |
| 18 | FMR LLC | 315066 | 314.60K | 368.08K | Jun 30, 2024 |
| 19 | MARSHALL WACE, LLP | 1318757 | 301.29K | 18.08K | Mar 31, 2026 |
| 20 | XTX TOPCO LTD | 1828301 | 265.79K | 15.60K | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.