WALTHAM, MA
ZENAS BIOPHARMA, INC.ZBIO— Latest position per institution from SEC 13F filings
15
Institutional holders
52.82M
Total shares held
1.33B
Estimated value
2.64M
Avg. position size
FMR LLC
CIK 315066
Shares
9.51M
Value
241.28M
Filed
Jun 30, 2026
SR ONE CAPITAL MANAGEMENT, LP
CIK 1910264
Shares
5.04M
Value
127.86M
Filed
Jun 30, 2026
NEA MANAGEMENT COMPANY, LLC
CIK 1512848
Shares
4.02M
Value
102.11M
Filed
Jun 30, 2026
ENAVATE SCIENCES GP, LLC
CIK 1953107
Shares
3.92M
Value
99.47M
Filed
Jun 30, 2026
FEDERATED HERMES, INC.
CIK 1056288
Shares
3.12M
Value
79.10M
Filed
Jun 30, 2026
BLACKROCK, INC.
CIK 2012383
Shares
2.69M
Value
68.18M
Filed
Jun 30, 2026
CAPITAL INTERNATIONAL INVESTORS
CIK 1562230
Shares
2.50M
Value
63.52M
Filed
Jun 30, 2026
POLAR CAPITAL HOLDINGS PLC
CIK 1837309
Shares
2.41M
Value
61.24M
Filed
Jun 30, 2026
ROYALTY PHARMA SUB-MANAGER, LLC
CIK 2081668
Shares
2.39M
Value
60.61M
Filed
Jun 30, 2026
FAIRMOUNT FUNDS MANAGEMENT LLC
CIK 1802528
Shares
2.36M
Value
59.87M
Filed
Jun 30, 2026
STATE STREET CORP
CIK 93751
Shares
2.06M
Value
52.16M
Filed
Jun 30, 2026
NVP ASSOCIATES, LLC
CIK 1545692
Shares
1.84M
Value
46.66M
Filed
Jun 30, 2026
WELLINGTON MANAGEMENT GROUP LLP
CIK 902219
Shares
1.59M
Value
40.45M
Filed
Jun 30, 2026
DEERFIELD MANAGEMENT COMPANY, L.P.
CIK 1009258
Shares
1.56M
Value
34.70M
Filed
Sep 30, 2025
VANGUARD GROUP INC
CIK 102909
Shares
1.45M
Value
52.76M
Filed
Dec 31, 2025
NOVO HOLDINGS A/S
CIK 1388325
Shares
1.45M
Value
52.65M
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.35M
Value
34.39M
Filed
Jun 30, 2026
BANK OF AMERICA CORP /DE/
CIK 70858
Shares
1.23M
Value
31.25M
Filed
Jun 30, 2026
PRICE T ROWE ASSOCIATES INC /MD/
CIK 80255
Shares
1.23M
Value
31.14K
Filed
Jun 30, 2026
ALLIANCEBERNSTEIN L.P.
CIK 1109448
Shares
1.10M
Value
21.57M
Filed
Jun 30, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | FMR LLC | 315066 | 9.51M | 241.28M | Jun 30, 2026 |
| 2 | SR ONE CAPITAL MANAGEMENT, LP | 1910264 | 5.04M | 127.86M | Jun 30, 2026 |
| 3 | NEA MANAGEMENT COMPANY, LLC | 1512848 | 4.02M | 102.11M | Jun 30, 2026 |
| 4 | ENAVATE SCIENCES GP, LLC | 1953107 | 3.92M | 99.47M | Jun 30, 2026 |
| 5 | FEDERATED HERMES, INC. | 1056288 | 3.12M | 79.10M | Jun 30, 2026 |
| 6 | BLACKROCK, INC. | 2012383 | 2.69M | 68.18M | Jun 30, 2026 |
| 7 | CAPITAL INTERNATIONAL INVESTORS | 1562230 | 2.50M | 63.52M | Jun 30, 2026 |
| 8 | POLAR CAPITAL HOLDINGS PLC | 1837309 | 2.41M | 61.24M | Jun 30, 2026 |
| 9 | ROYALTY PHARMA SUB-MANAGER, LLC | 2081668 | 2.39M | 60.61M | Jun 30, 2026 |
| 10 | FAIRMOUNT FUNDS MANAGEMENT LLC | 1802528 | 2.36M | 59.87M | Jun 30, 2026 |
| 11 | STATE STREET CORP | 93751 | 2.06M | 52.16M | Jun 30, 2026 |
| 12 | NVP ASSOCIATES, LLC | 1545692 | 1.84M | 46.66M | Jun 30, 2026 |
| 13 | WELLINGTON MANAGEMENT GROUP LLP | 902219 | 1.59M | 40.45M | Jun 30, 2026 |
| 14 | DEERFIELD MANAGEMENT COMPANY, L.P. | 1009258 | 1.56M | 34.70M | Sep 30, 2025 |
| 15 | VANGUARD GROUP INC | 102909 | 1.45M | 52.76M | Dec 31, 2025 |
| 16 | NOVO HOLDINGS A/S | 1388325 | 1.45M | 52.65M | Dec 31, 2025 |
| 17 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.35M | 34.39M | Jun 30, 2026 |
| 18 | BANK OF AMERICA CORP /DE/ | 70858 | 1.23M | 31.25M | Jun 30, 2026 |
| 19 | PRICE T ROWE ASSOCIATES INC /MD/ | 80255 | 1.23M | 31.14K | Jun 30, 2026 |
| 20 | ALLIANCEBERNSTEIN L.P. | 1109448 | 1.10M | 21.57M | Jun 30, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.