OmniAb, Inc. (NASDAQ:OABI) has 125 institutional investors that have filed 13F reports for the period ending December 2025.
| Owner Name | Date | Shares Held | Change (QoQ) | Change (%) | Value (USD) |
|---|---|---|---|---|---|
| Whitefort Capital Management, LP | 31 Mar, 2026 | 14,223,658 | 0 | 0.00% | $22,331,143.00 |
| BlackRock, Inc. | 31 Mar, 2026 | 8,106,881 | 41,900 | 0.52% | $12,727,803.00 |
| CADIAN CAPITAL MANAGEMENT, LP | 31 Mar, 2026 | 4,157,129 | -277,825 | -6.26% | $6,526,693.00 |
| VANGUARD CAPITAL MANAGEMENT LLC | 31 Mar, 2026 | 3,993,652 | 3,993,652 | 0.00% | $6,270,034.00 |
| GEODE CAPITAL MANAGEMENT, LLC | 31 Mar, 2026 | 2,925,579 | 202,887 | 7.45% | $4,594,230.00 |
| RICE HALL JAMES & ASSOCIATES, LLC | 31 Mar, 2026 | 2,547,255 | 146,167 | 6.09% | $3,999,190.00 |
| PRIVATE MANAGEMENT GROUP INC | 31 Mar, 2026 | 2,429,166 | 8,688 | 0.36% | $3,813,791.00 |
| State Street Corp | 31 Mar, 2026 | 2,067,143 | 18,147 | 0.89% | $3,245,415.00 |
| DIMENSIONAL FUND ADVISORS LP | 31 Mar, 2026 | 1,745,248 | -407,345 | -18.92% | $2,739,965.00 |
| TOWERVIEW LLC | 31 Mar, 2026 | 1,000,000 | 0 | 0.00% | $1,570,000.00 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 31 Mar, 2026 | 959,573 | -6,453 | -0.67% | $1,506,530.00 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 31 Mar, 2026 | 903,799 | 903,799 | 0.00% | $1,418,964.00 |
| Northern Trust Corp | 31 Mar, 2026 | 880,895 | 51,874 | 6.26% | $1,383,005.00 |
| ISTHMUS PARTNERS, LLC | 31 Mar, 2026 | 756,674 | 35,365 | 4.90% | $1,187,978.00 |
| VANGUARD FIDUCIARY TRUST CO | 31 Mar, 2026 | 725,608 | 725,608 | 0.00% | $1,139,205.00 |
| ADAR1 Capital Management, LLC | 31 Mar, 2026 | 705,190 | -699,190 | -49.79% | $1,107,148.00 |
| Nomura Holdings Inc | 31 Mar, 2026 | 705,048 | 550,097 | 355.01% | $1,106,925.00 |
| Nuveen, LLC | 31 Mar, 2026 | 623,876 | -250,636 | -28.66% | $979,485.00 |
| MILLENNIUM MANAGEMENT LLC | 31 Mar, 2026 | 523,918 | -149,477 | -22.20% | $629,731.00 |
| TWO SIGMA INVESTMENTS, LP | 31 Mar, 2026 | 512,741 | 89,637 | 21.19% | $805,003.00 |