OMNIAB INC (OABI) 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 June 30, 2026. The institutional investors covered on this page collectively reported approximately $144.11M 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 $25.21M in its June 30, 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 $45.50M, representing an estimated gain of +80.49% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 74% of the total disclosed OABI value among the investors covered in this analysis. Major shareholders include Whitefort Capital Management, Lp, Blackrock, Inc., Nomura Holdings Inc, 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
129
Total Reported Value
$144.11M
Largest Holder
Whitefort Capital Management, Lp
Largest Position
$25.21M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
133
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 | 6.21% | 10,248,658 | $25,211,699 | $45,504,042 | +$20,292,343 | +80.49% | |
| Blackrock, Inc. | 0.00% | 8,897,490 | $21,887,827 | $39,504,856 | +$17,617,029 | +80.49% | |
| Nomura Holdings Inc | 0.05% | 5,028,160 | $12,369,274 | $22,325,030 | +$9,955,756 | +80.49% | |
| Cadian Capital Management, Lp | 0.78% | 4,211,821 | $10,361,080 | $18,700,485 | +$8,339,405 | +80.49% | |
| Vanguard Capital Management Llc | 0.00% | 3,852,356 | $9,476,796 | $17,104,461 | +$7,627,665 | +80.49% | |
| Geode Capital Management, Llc | 0.00% | 2,883,978 | $7,096,381 | $12,804,862 | +$5,708,481 | +80.44% | |
| Rice Hall James & Associates, Llc | 0.31% | 2,610,434 | $6,421,668 | $11,590,327 | +$5,168,659 | +80.49% | |
| Private Management Group Inc | 0.15% | 2,344,770 | $5,768,134 | $10,410,779 | +$4,642,645 | +80.49% | |
| State Street Corp | 0.00% | 2,133,549 | $5,248,531 | $9,472,958 | +$4,224,427 | +80.49% | |
| Dimensional Fund Advisors Lp | 0.00% | 1,262,099 | $3,105,584 | $5,603,720 | +$2,498,136 | +80.44% | |
| Towerview Llc | 1.90% | 1,180,000 | $2,902,800 | $5,239,200 | +$2,336,400 | +80.49% | |
| Vanguard Portfolio Management Llc | 0.00% | 980,416 | $2,411,823 | $4,353,047 | +$1,941,224 | +80.49% | |
| Charles Schwab Investment Management Inc | 0.00% | 966,877 | $2,378,517 | $4,292,934 | +$1,914,417 | +80.49% | |
| Northern Trust Corp | 0.00% | 948,294 | $2,332,803 | $4,210,425 | +$1,877,622 | +80.49% | |
| Adar1 Capital Management, Llc | 0.11% | 947,412 | $2,330,634 | $4,206,509 | +$1,875,875 | +80.49% | |
| Isthmus Partners, Llc | 0.19% | 803,428 | $1,976,433 | $3,567,220 | +$1,590,787 | +80.49% | |
| Vanguard Fiduciary Trust Co | 0.00% | 758,460 | $1,865,812 | $3,367,562 | +$1,501,750 | +80.49% | |
| Two Sigma Investments, Lp | 0.00% | 657,432 | $1,617,283 | $2,918,998 | +$1,301,715 | +80.49% | |
| Nuveen, Llc | 0.00% | 642,811 | $1,581,315 | $2,854,081 | +$1,272,766 | +80.49% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 600,350 | $1,476,861 | $2,665,554 | +$1,188,693 | +80.49% |
| D. E. Shaw & Co., Inc. | 0.00% | 559,404 | $1,376,134 | $2,483,754 | +$1,107,620 | +80.49% | |
| Mackenzie Financial Corp | 0.00% | 489,134 | $1,203,270 | $2,171,755 | +$968,485 | +80.49% | |
| Goldman Sachs Group Inc | 0.00% | 384,573 | $946,049 | $1,707,504 | +$761,455 | +80.49% | |
| Morgan Stanley | 0.00% | 371,506 | $913,905 | $1,649,487 | +$735,582 | +80.49% | |
| Millennium Management Llc | 0.00% | 474,159 | $864,306 | $2,105,266 | +$1,240,960 | +143.58% | |
| Bank Of New York Mellon Corp | 0.00% | 318,406 | $783,279 | $1,413,723 | +$630,444 | +80.49% | |
| Tls Advisors Llc | 1.60% | 220,685 | $542,885 | $979,841 | +$436,956 | +80.49% | |
| Fmr Llc | 0.00% | 199,818 | $491,552 | $887,192 | +$395,640 | +80.49% | |
| Bridgeway Capital Management, Llc | 0.01% | 198,900 | $489,294 | $883,116 | +$393,822 | +80.49% | |
| Arbiter Partners Capital Management | Paul Isaac | 0.25% | 192,585 | $473,759 | $855,077 | +$381,318 | +80.49% |
| Rhumbline Advisers | 0.00% | 171,957 | $423,003 | $763,489 | +$340,486 | +80.49% | |
| Palumbo Wealth Management Llc | 0.08% | 161,975 | $398,459 | $719,169 | +$320,710 | +80.49% | |
| Invesco Ltd. | 0.00% | 161,376 | $396,986 | $716,509 | +$319,523 | +80.49% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 159,621 | $392,668 | $708,717 | +$316,049 | +80.49% | |
| Aqr Capital Management Llc | 0.00% | 157,716 | $387,981 | $700,259 | +$312,278 | +80.49% | |
| Bank Of America Corp | 0.00% | 149,493 | $367,753 | $663,749 | +$295,996 | +80.49% | |
| Walleye Capital Llc | 0.00% | 144,427 | $355,290 | $641,256 | +$285,966 | +80.49% | |
| Cornerstone Capital, Inc. | 0.03% | 142,286 | $350,024 | $631,750 | +$281,726 | +80.49% | |
| Acadian Asset Management Llc | 0.00% | 132,385 | $323,000 | $587,789 | +$264,789 | +81.98% | |
| Jpmorgan Chase & Co | 0.00% | 107,049 | $275,115 | $475,298 | +$200,183 | +72.76% | |
| Deutsche Bank Ag\ | 0.00% | 100,842 | $248,071 | $447,738 | +$199,667 | +80.49% | |
| Wells Fargo & Company/Mn | 0.00% | 100,229 | $246,563 | $445,017 | +$198,454 | +80.49% | |
| Alliancebernstein L.P. | 0.00% | 155,992 | $244,907 | $692,604 | +$447,697 | +182.80% | |
| Price T Rowe Associates Inc | 0.00% | 80,106 | $198,000 | $355,671 | +$157,671 | +79.63% | |
| American Century Companies Inc | 0.00% | 75,083 | $184,704 | $333,369 | +$148,665 | +80.49% | |
| Xtx Topco Ltd | 0.00% | 73,907 | $181,811 | $328,147 | +$146,336 | +80.49% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 72,357 | $177,999 | $321,265 | +$143,266 | +80.49% | |
| Metlife Investment Management, Llc | 0.00% | 65,744 | $161,730 | $291,903 | +$130,173 | +80.49% | |
| Russell Investments Group, Ltd. | 0.00% | 63,783 | $156,906 | $283,197 | +$126,291 | +80.49% | |
| Citadel Advisors Llc | 0.00% | 58,190 | $143,147 | $258,364 | +$115,217 | +80.49% |
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.