OMNIAB INC (OABI) Top Institutional Shareholders
OMNIAB INC (OABI) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $87.49M in OABI holdings during the latest filing period.
Whitefort Capital Management, Lp is currently the largest disclosed institutional shareholder of OABI tracked by InsiderSet, reporting ownership valued at approximately $22.33M in its March 31, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $28.87M, representing an estimated gain of +29.30% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 78% of the total disclosed OABI value among the investors covered in this analysis. Major shareholders include Whitefort Capital Management, Lp, Blackrock, Inc., Cadian Capital Management, Lp, and several other long-term asset managers with concentrated positions in OMNIAB INC (OABI).
This page ranks the largest institutional OABI shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
126
Total Reported Value
$87.49M
Largest Holder
Whitefort Capital Management, Lp
Largest Position
$22.33M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
149
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Whitefort Capital Management, Lp | 6.80% | 14,223,658 | $22,331,143 | $28,874,026 | +$6,542,883 | +29.30% | |
| Blackrock, Inc. | 0.00% | 8,106,881 | $12,727,803 | $16,456,968 | +$3,729,165 | +29.30% | |
| Cadian Capital Management, Lp | 0.79% | 4,157,129 | $6,526,693 | $8,438,972 | +$1,912,279 | +29.30% | |
| Vanguard Capital Management Llc | 0.00% | 3,993,652 | $6,270,034 | $8,107,114 | +$1,837,080 | +29.30% | |
| Geode Capital Management, Llc | 0.00% | 2,925,579 | $4,594,230 | $5,938,925 | +$1,344,695 | +29.27% | |
| Rice Hall James & Associates, Llc | 0.22% | 2,547,255 | $3,999,190 | $5,170,928 | +$1,171,738 | +29.30% | |
| Private Management Group Inc | 0.11% | 2,429,166 | $3,813,791 | $4,931,207 | +$1,117,416 | +29.30% | |
| State Street Corp | 0.00% | 2,067,143 | $3,245,415 | $4,196,300 | +$950,885 | +29.30% | |
| Dimensional Fund Advisors Lp | 0.00% | 1,745,248 | $2,739,965 | $3,542,853 | +$802,888 | +29.30% | |
| Towerview Llc | 1.01% | 1,000,000 | $1,570,000 | $2,030,000 | +$460,000 | +29.30% | |
| Charles Schwab Investment Management Inc | 0.00% | 959,573 | $1,506,530 | $1,947,933 | +$441,403 | +29.30% | |
| Vanguard Portfolio Management Llc | 0.00% | 903,799 | $1,418,964 | $1,834,712 | +$415,748 | +29.30% | |
| Northern Trust Corp | 0.00% | 880,895 | $1,383,005 | $1,788,217 | +$405,212 | +29.30% | |
| Isthmus Partners, Llc | 0.12% | 756,674 | $1,187,978 | $1,536,048 | +$348,070 | +29.30% | |
| Vanguard Fiduciary Trust Co | 0.00% | 725,608 | $1,139,205 | $1,472,984 | +$333,779 | +29.30% | |
| Adar1 Capital Management, Llc | 0.07% | 705,190 | $1,107,148 | $1,431,536 | +$324,388 | +29.30% | |
| Nomura Holdings Inc | 0.01% | 705,048 | $1,106,925 | $1,431,247 | +$324,322 | +29.30% | |
| Nuveen, Llc | 0.00% | 623,876 | $979,485 | $1,266,468 | +$286,983 | +29.30% | |
| Two Sigma Investments, Lp | 0.00% | 512,741 | $805,003 | $1,040,864 | +$235,861 | +29.30% | |
| Goldman Sachs Group Inc | 0.00% | 419,024 | $657,867 | $850,619 | +$192,752 | +29.30% | |
| Morgan Stanley | 0.00% | 407,933 | $640,454 | $828,104 | +$187,650 | +29.30% | |
| Millennium Management Llc | 0.00% | 523,918 | $629,731 | $1,063,554 | +$433,823 | +68.89% | |
| D. E. Shaw & Co., Inc. | 0.00% | 380,254 | $596,999 | $771,916 | +$174,917 | +29.30% | |
| Eversource Wealth Advisors, Llc | 0.02% | 10,510 | $549,620 | $21,335 | -$528,285 | -96.12% | |
| Bank Of New York Mellon Corp | 0.00% | 274,451 | $430,888 | $557,136 | +$126,248 | +29.30% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 269,600 | $423,272 | $547,288 | +$124,016 | +29.30% |
| Citadel Advisors Llc | 0.00% | 228,684 | $359,034 | $464,229 | +$105,195 | +29.30% | |
| Bridgeway Capital Management, Llc | 0.01% | 198,900 | $312,273 | $403,767 | +$91,494 | +29.30% | |
| Arbiter Partners Capital Management | Paul Isaac | 0.21% | 192,585 | $302,358 | $390,948 | +$88,590 | +29.30% |
| Fmr Llc | 0.00% | 189,536 | $297,572 | $384,758 | +$87,186 | +29.30% | |
| Alliancebernstein L.P. | 0.00% | 150,592 | $278,595 | $305,702 | +$27,107 | +9.73% | |
| Stonepine Capital Management, Llc | 0.23% | 164,045 | $257,551 | $333,011 | +$75,460 | +29.30% | |
| Rhumbline Advisers | 0.00% | 159,235 | $249,988 | $323,247 | +$73,259 | +29.31% | |
| Cornerstone Capital, Inc. | 0.02% | 142,286 | $223,389 | $288,841 | +$65,452 | +29.30% | |
| Invesco Ltd. | 0.00% | 135,087 | $212,087 | $274,227 | +$62,140 | +29.30% | |
| Bank Of America Corp | 0.00% | 121,656 | $191,000 | $246,962 | +$55,962 | +29.30% | |
| Aqr Capital Management Llc | 0.00% | 115,647 | $181,567 | $234,763 | +$53,196 | +29.30% | |
| Ubs Group Ag | 0.00% | 102,507 | $160,936 | $208,089 | +$47,153 | +29.30% | |
| Deutsche Bank Ag\ | 0.00% | 92,670 | $145,492 | $188,120 | +$42,628 | +29.30% | |
| Sei Investments Co | 0.00% | 60,578 | $95,078 | $122,973 | +$27,895 | +29.34% | |
| Vanguard Global Advisers, Llc | 0.00% | 51,396 | $80,692 | $104,334 | +$23,642 | +29.30% | |
| Wells Fargo & Company/Mn | 0.00% | 50,133 | $78,709 | $101,770 | +$23,061 | +29.30% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 50,113 | $78,677 | $101,729 | +$23,052 | +29.30% | |
| Shay Capital Llc | 0.01% | 49,662 | $77,969 | $100,814 | +$22,845 | +29.30% | |
| Metlife Investment Management, Llc | 0.00% | 48,132 | $75,567 | $97,708 | +$22,141 | +29.30% | |
| Xtx Topco Ltd | 0.00% | 44,659 | $70,115 | $90,658 | +$20,543 | +29.30% | |
| Blair William & Co/Il | 0.00% | 43,216 | $67,849 | $87,728 | +$19,879 | +29.30% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 42,966 | $67,457 | $87,221 | +$19,764 | +29.30% | |
| Susquehanna International Group, Llp | 0.00% | 41,629 | $65,358 | $84,507 | +$19,149 | +29.30% | |
| Lpl Financial Llc | 0.00% | 36,164 | $56,777 | $73,413 | +$16,636 | +29.30% |
Frequently asked questions about OABI
Who owns the most OABI stock?
The largest holders of OABI are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for OMNIAB INC (OABI).
Is OABI widely held by superinvestors?
Many widely followed stocks like OABI appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly OABI is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.