LOS ANGELES, CA
PUMA BIOTECHNOLOGY, INC.PBYI— Latest position per institution from SEC 13F filings
15
Institutional holders
40.07M
Total shares held
190.83M
Estimated value
2M
Avg. position size
ACORN CAPITAL ADVISORS, LLC
CIK 2054410
Shares
4.13M
Value
26.40M
Filed
Mar 31, 2026
VANGUARD GROUP INC
CIK 102909
Shares
3.80M
Value
22.60M
Filed
Dec 31, 2025
BLACKROCK, INC.
CIK 2012383
Shares
3.60M
Value
23M
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
3.57M
Value
11.65M
Filed
Jun 30, 2024
FRAZIER LIFE SCIENCES MANAGEMENT, L.P.
CIK 1892134
Shares
3.06M
Value
7.81M
Filed
Sep 30, 2024
ACADIAN ASSET MANAGEMENT LLC
CIK 916542
Shares
2.04M
Value
13.04K
Filed
Mar 31, 2026
RENAISSANCE TECHNOLOGIES LLC
CIK 1037389
Shares
1.94M
Value
12.41M
Filed
Mar 31, 2026
AMERICAN CENTURY COMPANIES INC
CIK 748054
Shares
1.92M
Value
12.25M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.82M
Value
11.61M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.73M
Value
11.08M
Filed
Mar 31, 2026
CAMBER CAPITAL MANAGEMENT LP
CIK 1444043
Shares
1.65M
Value
8.74K
Filed
Mar 31, 2024
GREAT POINT PARTNERS LLC
CIK 1281446
Shares
1.49M
Value
4.85M
Filed
Jun 30, 2024
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
1.48M
Value
9.44M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.44M
Value
9.17M
Filed
Mar 31, 2026
ATHYRIUM CAPITAL MANAGEMENT, LP
CIK 1728001
Shares
1.26M
Value
3.20M
Filed
Sep 30, 2024
LSV ASSET MANAGEMENT
CIK 1050470
Shares
1.18M
Value
7.56K
Filed
Mar 31, 2026
O'SHAUGHNESSY ASSET MANAGEMENT, LLC
CIK 1423442
Shares
1.14M
Value
7.27M
Filed
Mar 31, 2026
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
1.02M
Value
6.50M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
917.59K
Value
5.86M
Filed
Mar 31, 2026
KENNEDY CAPITAL MANAGEMENT LLC
CIK 884589
Shares
889.60K
Value
5.68M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | ACORN CAPITAL ADVISORS, LLC | 2054410 | 4.13M | 26.40M | Mar 31, 2026 |
| 2 | VANGUARD GROUP INC | 102909 | 3.80M | 22.60M | Dec 31, 2025 |
| 3 | BLACKROCK, INC. | 2012383 | 3.60M | 23M | Mar 31, 2026 |
| 4 | BLACKROCK FINANCE, INC. | 1364742 | 3.57M | 11.65M | Jun 30, 2024 |
| 5 | FRAZIER LIFE SCIENCES MANAGEMENT, L.P. | 1892134 | 3.06M | 7.81M | Sep 30, 2024 |
| 6 | ACADIAN ASSET MANAGEMENT LLC | 916542 | 2.04M | 13.04K | Mar 31, 2026 |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 1037389 | 1.94M | 12.41M | Mar 31, 2026 |
| 8 | AMERICAN CENTURY COMPANIES INC | 748054 | 1.92M | 12.25M | Mar 31, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.82M | 11.61M | Mar 31, 2026 |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.73M | 11.08M | Mar 31, 2026 |
| 11 | CAMBER CAPITAL MANAGEMENT LP | 1444043 | 1.65M | 8.74K | Mar 31, 2024 |
| 12 | GREAT POINT PARTNERS LLC | 1281446 | 1.49M | 4.85M | Jun 30, 2024 |
| 13 | MILLENNIUM MANAGEMENT LLC | 1273087 | 1.48M | 9.44M | Mar 31, 2026 |
| 14 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.44M | 9.17M | Mar 31, 2026 |
| 15 | ATHYRIUM CAPITAL MANAGEMENT, LP | 1728001 | 1.26M | 3.20M | Sep 30, 2024 |
| 16 | LSV ASSET MANAGEMENT | 1050470 | 1.18M | 7.56K | Mar 31, 2026 |
| 17 | O'SHAUGHNESSY ASSET MANAGEMENT, LLC | 1423442 | 1.14M | 7.27M | Mar 31, 2026 |
| 18 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 1.02M | 6.50M | Mar 31, 2026 |
| 19 | STATE STREET CORP | 93751 | 917.59K | 5.86M | Mar 31, 2026 |
| 20 | KENNEDY CAPITAL MANAGEMENT LLC | 884589 | 889.60K | 5.68M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.