EMERYVILLE, CA
OMNIAB, INC.OABIW— Latest position per institution from SEC 13F filings
15
Institutional holders
96.06M
Total shares held
234.52M
Estimated value
4.80M
Avg. position size
AVISTA CAPITAL HOLDINGS, L.P.
CIK 1761123
Shares
15.82M
Value
64.32M
Filed
Sep 30, 2024
WHITEFORT CAPITAL MANAGEMENT, LP
CIK 1884931
Shares
14.22M
Value
22.33M
Filed
Mar 31, 2026
BLACKROCK, INC.
CIK 2012383
Shares
8.11M
Value
12.73M
Filed
Mar 31, 2026
JANUS HENDERSON GROUP PLC
CIK 1274173
Shares
8.06M
Value
19.50M
Filed
Mar 31, 2025
BLACKROCK FINANCE, INC.
CIK 1364742
Shares
7.04M
Value
26.39M
Filed
Jun 30, 2024
VANGUARD GROUP INC
CIK 102909
Shares
5.63M
Value
10.41M
Filed
Dec 31, 2025
MACQUARIE GROUP LTD
CIK 1418333
Shares
4.42M
Value
10.62M
Filed
Mar 31, 2025
CADIAN CAPITAL MANAGEMENT, LP
CIK 1423686
Shares
4.16M
Value
6.53M
Filed
Mar 31, 2026
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
Shares
3.99M
Value
6.27M
Filed
Mar 31, 2026
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC
CIK 1644956
Shares
3.36M
Value
18.23M
Filed
Mar 31, 2024
GEODE CAPITAL MANAGEMENT, LLC
CIK 1214717
Shares
2.93M
Value
4.59M
Filed
Mar 31, 2026
RUBRIC CAPITAL MANAGEMENT LP
CIK 1687509
Shares
2.85M
Value
6.84M
Filed
Mar 31, 2025
CHICAGO CAPITAL, LLC
CIK 1740053
Shares
2.62M
Value
6.29M
Filed
Mar 31, 2025
RICE HALL JAMES & ASSOCIATES, LLC
CIK 1230765
Shares
2.55M
Value
4M
Filed
Mar 31, 2026
PRIVATE MANAGEMENT GROUP INC
CIK 1142031
Shares
2.43M
Value
3.81M
Filed
Mar 31, 2026
STATE STREET CORP
CIK 93751
Shares
2.07M
Value
3.25M
Filed
Mar 31, 2026
DIMENSIONAL FUND ADVISORS LP
CIK 354204
Shares
1.75M
Value
2.74M
Filed
Mar 31, 2026
WALLEYE CAPITAL LLC
CIK 1758720
Shares
1.63M
Value
661.33K
Filed
Sep 30, 2024
VILLERE ST DENIS J & CO LLC
CIK 1113629
Shares
1.44M
Value
3.45M
Filed
Mar 31, 2025
TOWERVIEW LLC
CIK 1166573
Shares
1M
Value
1.57M
Filed
Mar 31, 2026
| # | Institution | CIK | Shares | Est. Value | Period |
|---|---|---|---|---|---|
| 1 | AVISTA CAPITAL HOLDINGS, L.P. | 1761123 | 15.82M | 64.32M | Sep 30, 2024 |
| 2 | WHITEFORT CAPITAL MANAGEMENT, LP | 1884931 | 14.22M | 22.33M | Mar 31, 2026 |
| 3 | BLACKROCK, INC. | 2012383 | 8.11M | 12.73M | Mar 31, 2026 |
| 4 | JANUS HENDERSON GROUP PLC | 1274173 | 8.06M | 19.50M | Mar 31, 2025 |
| 5 | BLACKROCK FINANCE, INC. | 1364742 | 7.04M | 26.39M | Jun 30, 2024 |
| 6 | VANGUARD GROUP INC | 102909 | 5.63M | 10.41M | Dec 31, 2025 |
| 7 | MACQUARIE GROUP LTD | 1418333 | 4.42M | 10.62M | Mar 31, 2025 |
| 8 | CADIAN CAPITAL MANAGEMENT, LP | 1423686 | 4.16M | 6.53M | Mar 31, 2026 |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | 3.99M | 6.27M | Mar 31, 2026 |
| 10 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1644956 | 3.36M | 18.23M | Mar 31, 2024 |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 1214717 | 2.93M | 4.59M | Mar 31, 2026 |
| 12 | RUBRIC CAPITAL MANAGEMENT LP | 1687509 | 2.85M | 6.84M | Mar 31, 2025 |
| 13 | CHICAGO CAPITAL, LLC | 1740053 | 2.62M | 6.29M | Mar 31, 2025 |
| 14 | RICE HALL JAMES & ASSOCIATES, LLC | 1230765 | 2.55M | 4M | Mar 31, 2026 |
| 15 | PRIVATE MANAGEMENT GROUP INC | 1142031 | 2.43M | 3.81M | Mar 31, 2026 |
| 16 | STATE STREET CORP | 93751 | 2.07M | 3.25M | Mar 31, 2026 |
| 17 | DIMENSIONAL FUND ADVISORS LP | 354204 | 1.75M | 2.74M | Mar 31, 2026 |
| 18 | WALLEYE CAPITAL LLC | 1758720 | 1.63M | 661.33K | Sep 30, 2024 |
| 19 | VILLERE ST DENIS J & CO LLC | 1113629 | 1.44M | 3.45M | Mar 31, 2025 |
| 20 | TOWERVIEW LLC | 1166573 | 1M | 1.57M | Mar 31, 2026 |
Data sourced from SEC Form 13F institutional holdings reports. Positions reflect the most recent filing per institution.