ALAMEDA, CA
PENUMBRA INCPEN— Latest position per institution from SEC 13F filings
15
Institutional holders
28.39M
Total shares held
8.47B
Estimated value
1.42M
Avg. position size
BLACKROCK, INC.
CIK 2012383
Shares
4.33M
Value
1.42B
Filed
Mar 31, 2026
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
4.26M
Value
765.80M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
3.77M
Value
1.17B
Filed
Dec 31, 2025
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
1.69M
Value
556.42M
Filed
Mar 31, 2026
VANGUARD PORTFOLIO MANAGEMENT LLC
CIK 2100121
Shares
1.65M
Value
543.28M
Filed
Mar 31, 2026
HBK INVESTMENTS L P
CIK 1011443
Shares
1.63M
Value
536.64M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
1.19M
Value
389.38M
Filed
Mar 31, 2026
MILLENNIUM MANAGEMENT LLC
CIK 1273087
Shares
1.15M
Value
376.36M
Filed
Mar 31, 2026
CAPITAL RESEARCH GLOBAL INVESTORS
CIK 1422848
Shares
1.13M
Value
252.39M
Filed
Mar 31, 2024
RTW INVESTMENTS, LP
CIK 1493215
Shares
866.50K
Value
269.40M
Filed
Dec 31, 2025
BAILLIE GIFFORD & CO
CIK 1088875
Shares
840.43K
Value
275.97M
Filed
Mar 31, 2026
JPMORGAN CHASE & CO
CIK 19617
Shares
797.49K
Value
247.95M
Filed
Dec 31, 2025
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
795.45K
Value
261.26M
Filed
Mar 31, 2026
BALYASNY ASSET MANAGEMENT L.P.
CIK 1218710
Shares
762.10K
Value
250.25M
Filed
Mar 31, 2026
GOLDMAN SACHS GROUP INC
CIK 886982
Shares
720.58K
Value
236.62M
Filed
Mar 31, 2026
CITIGROUP INC
CIK 831001
Shares
620.94K
Value
203.90M
Filed
Mar 31, 2026
ARTISAN PARTNERS LIMITED PARTNERSHIP
CIK 1466153
Shares
594.11K
Value
184.72M
Filed
Dec 31, 2025
UBS GROUP AG
CIK 1610520
Shares
560.34K
Value
184M
Filed
Mar 31, 2026
INVESCO LTD.
CIK 914208
Shares
538.20K
Value
176.73M
Filed
Mar 31, 2026
FMR LLC
CIK 315066
Shares
496.11K
Value
162.91M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | BLACKROCK, INC. | 2012383 | 4.33M | 1.42B | Mar 31, 2026 |
| 2 | BLACKROCK FINANCE, INC. | 1364742 | 4.26M | 765.80M | Jun 30, 2024 |
| 3 | VANGUARD GROUP INC | 102909 | 3.77M | 1.17B | Dec 31, 2025 |
| 4 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 1.69M | 556.42M | Mar 31, 2026 |
| 5 | VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | 1.65M | 543.28M | Mar 31, 2026 |
| 6 | HBK INVESTMENTS L P | 1011443 | 1.63M | 536.64M | Mar 31, 2026 |
| 7 | STATE STREET CORP | 93751 | 1.19M | 389.38M | Mar 31, 2026 |
| 8 | MILLENNIUM MANAGEMENT LLC | 1273087 | 1.15M | 376.36M | Mar 31, 2026 |
| 9 | CAPITAL RESEARCH GLOBAL INVESTORS | 1422848 | 1.13M | 252.39M | Mar 31, 2024 |
| 10 | RTW INVESTMENTS, LP | 1493215 | 866.50K | 269.40M | Dec 31, 2025 |
| 11 | BAILLIE GIFFORD & CO | 1088875 | 840.43K | 275.97M | Mar 31, 2026 |
| 12 | JPMORGAN CHASE & CO | 19617 | 797.49K | 247.95M | Dec 31, 2025 |
| 13 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 795.45K | 261.26M | Mar 31, 2026 |
| 14 | BALYASNY ASSET MANAGEMENT L.P. | 1218710 | 762.10K | 250.25M | Mar 31, 2026 |
| 15 | GOLDMAN SACHS GROUP INC | 886982 | 720.58K | 236.62M | Mar 31, 2026 |
| 16 | CITIGROUP INC | 831001 | 620.94K | 203.90M | Mar 31, 2026 |
| 17 | ARTISAN PARTNERS LIMITED PARTNERSHIP | 1466153 | 594.11K | 184.72M | Dec 31, 2025 |
| 18 | UBS GROUP AG | 1610520 | 560.34K | 184M | Mar 31, 2026 |
| 19 | INVESCO LTD. | 914208 | 538.20K | 176.73M | Mar 31, 2026 |
| 20 | FMR LLC | 315066 | 496.11K | 162.91M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.