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Disclosery

OABI OMNIAB INC

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COM (common), issuer CIK 1846253

122 managers (128 13F filers) reported a position in OABI shares at 2026-03-31, 55,950,370 shares in all. 20 filers opened a position and 22 filers sold out during the quarter.

Managers
122
13F filers
128
New
20
Added
42
Reduced
38
Sold out
22
Shares held by filers
55,950,370

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Whitefort Capital Management, LP14,223,658$22.3M6.8%013F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.8,106,881$12.7M<0.01%+41,90013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 5 filers holding5,699,682$8.95M+5,668,245Timeline
CADIAN CAPITAL MANAGEMENT, LP4,157,129$6.53M0.79%-277,82513F-HRTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC2,925,579$4.59M<0.01%+202,88713F-HRTimelineGroup
RICE HALL JAMES & ASSOCIATES, LLC2,547,255$4M0.22%+146,16713F-HRTimeline
PRIVATE MANAGEMENT GROUP INC2,429,166$3.81M0.11%+8,68813F-HRTimeline
STATE STREET CORPin group STATE STREET CORP2,067,143$3.25M<0.01%+18,14713F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP1,745,248$2.74M<0.01%-407,34513F-HRTimelineGroup
TOWERVIEW LLC1,000,000$1.57M1.01%013F-HRTimeline
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co959,573$1.51M<0.01%-6,45313F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP880,895$1.38M<0.01%+51,87413F-HRTimelineGroup
ISTHMUS PARTNERS, LLC756,674$1.19M0.12%+35,36513F-HRTimeline
ADAR1 Capital Management, LLCin group ADAR1 Capital Management, LLC705,190$1.11M0.07%+3,00013F-HRTimelineGroup
NOMURA HOLDINGS INCin group NOMURA ASSET MANAGEMENT CO LTD705,048$1.11M0.01%+550,09713F-HRTimelineGroup
Nuveen, LLCin group TIAA623,876$979K<0.01%-250,63613F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP512,741$805K<0.01%+89,63713F-HRTimelineGroup
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC419,024$658K<0.01%-121,25313F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY407,933$640K<0.01%+18,24613F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC523,918$630K<0.01%-149,47713F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.380,254$597K<0.01%-2,89813F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp274,451$431K<0.01%+5,80613F-HRTimelineGroup
RENAISSANCE TECHNOLOGIES LLC269,600$423K<0.01%+26,90013F-HRTimeline
TLS Advisors LLC250,185$393K0.93%+180,18513F-HRTimeline
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC228,684$359K<0.01%-56,45013F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC198,900$312K0.01%013F-HRTimeline
Arbiter Partners Capital Management LLCin group Arbiter Partners Capital Mana…192,585$302K0.21%013F-HRTimelineGroup
FMR LLCin group FMR LLC189,536$298K<0.01%-9,44413F-HRTimelineGroup
ALLIANCEBERNSTEIN L.P.150,592$279K<0.01%013F-HRTimeline
Stonepine Capital Management, LLC164,045$258K0.23%-536,95513F-HRTimeline
RHUMBLINE ADVISERS159,235$250K<0.01%-3,53813F-HRTimeline
Cornerstone Capital, Inc.142,286$223K0.02%+33,07513F-HRTimeline
Invesco Ltd.in group Invesco Ltd.135,087$212K<0.01%-1,22213F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/121,656$191K<0.01%+38,56813F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO120,102$187K<0.01%-173,06613F-HR/ATimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC115,647$182K<0.01%+91,49413F-HRTimelineGroup
UBS Group AGgroup of 2 filers holding102,634$161K+34,660Timeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\92,670$145K<0.01%+15,44513F-HRTimelineGroup
PRICE T ROWE ASSOCIATES INC /MD/77,040$122K<0.01%+23,85013F-HRTimeline
SEI INVESTMENTS COin group SEI INVESTMENTS CO60,578$95.1K<0.01%+17,71813F-HRTimelineGroup
Mirae Asset Global Investments Co., Ltd.group of 2 filers holding57,942$91K+2,104Timeline
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN50,133$78.7K<0.01%-75,50313F-HR/ATimelineGroup
Shay Capital LLC49,662$78K0.01%new13F-HRTimeline
MetLife Investment Management, LLCin group MetLife Investment Management…48,132$75.6K<0.01%+11,58013F-HRTimelineGroup
XTX Topco Ltdin group XTX Topco Ltd44,659$70.1K<0.01%+32,63713F-HRTimelineGroup
BLAIR WILLIAM & CO/IL43,216$67.8K<0.01%+513F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC42,966$67.5K<0.01%-195,22313F-HRTimeline
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…41,629$65.4K<0.01%+25,67113F-HRTimelineGroup
LPL Financial LLC36,164$56.8K<0.01%+16,81013F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…35,306$55.4K<0.01%+29,03613F-HRTimelineGroup
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC34,816$54.7K<0.01%new13F-HRTimelineGroup
WOODSTOCK CORP34,418$54K<0.01%-82213F-HRTimeline
NINE MASTS CAPITAL Ltd29,062$45.6K0.01%new13F-HRTimeline
MANUFACTURERS LIFE INSURANCE COMPANY, T…in group MANUFACTURERS LIFE INSURANCE …28,943$45.4K<0.01%013F-HRTimelineGroup
INTECH INVESTMENT MANAGEMENT LLC28,937$45.4K<0.01%-8,88313F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC28,760$45.2K<0.01%-136,79713F-HRTimelineGroup
Legato Capital Management LLC28,196$44.3K<0.01%-2,48313F-HRTimeline
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC27,551$43.3K<0.01%-107,82713F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS27,339$42.9K<0.01%+1,46913F-HRTimelineGroup
China Universal Asset Management Co., L…25,546$40.1K<0.01%+2,08913F-HRTimeline
State of Wyoming24,694$38.8K<0.01%+12,45113F-HRTimeline
Police & Firemen's Retirement System of…22,568$35.4K<0.01%013F-HRTimeline
ProShare Advisors LLC22,552$35.4K<0.01%-3,02413F-HRTimeline
HighTower Advisors, LLC21,068$33.1K<0.01%-31413F-HRTimeline
BFSG, LLC20,815$32.7K<0.01%+38013F-HRTimeline
PRUDENTIAL FINANCIAL INCin group PRUDENTIAL FINANCIAL INC19,279$30.3K<0.01%new13F-HRTimelineGroup
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC18,190$28.6K<0.01%-1,30613F-HRTimelineGroup
Thrive Wealth Management, LLC17,281$27.1K<0.01%013F-HRTimeline
Point72 Asset Management, L.P.in group Point72 Asset Management, L.P.16,238$25.5K<0.01%new13F-HRTimelineGroup
Connor, Clark & Lunn Investment Managem…14,136$22.2K<0.01%-4,80913F-HRTimeline
VICTORY CAPITAL MANAGEMENT INC13,488$21.2K<0.01%+93613F-HRTimeline
CHOREO, LLC12,178$19.1K<0.01%+1,72713F-HRTimeline
NEW YORK STATE COMMON RETIREMENT FUND11,806$18.5K<0.01%013F-HRTimeline
Diversified Enterprises, LLC11,311$17.8K<0.01%new13F-HRTimeline
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…10,800$17K<0.01%-13913F-HRTimelineGroup
Abel Hall, LLC10,704$16.8K<0.01%new13F-HRTimeline
Integrated Wealth Concepts LLC10,651$16.7K<0.01%new13F-HRTimeline
MERCER GLOBAL ADVISORS INC /ADV10,048$15.8K<0.01%new13F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC10,032$15.8K<0.01%-10,29413F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC9,752$15.3K<0.01%+2,88413F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…9,652$15.2K<0.01%013F-HRTimelineGroup
Legal & General Group Plcin group Legal & General Group Plc9,292$14.6K<0.01%-26513F-HRTimelineGroup
Steigerwald, Gordon & Koch Inc.7,673$12K<0.01%013F-HRTimeline
CWM, LLCin group CWM, LLC7,599$11.9K<0.01%+5,10613F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…6,243$9.8K<0.01%-23313F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.5,499$8.63K<0.01%-9,96913F-HRTimelineGroup
MAI Capital Management4,821$7.57K<0.01%-1,91513F-HRTimeline
Sterling Capital Management LLC3,307$5.19K<0.01%-2,31513F-HRTimeline
GF FUND MANAGEMENT CO. LTD.3,201$5.03K<0.01%+37313F-HRTimeline
Allworth Financial LP2,451$3.85K<0.01%+32413F-HRTimeline
Jackson, Grant Investment Advisers, Inc.2,450$3.85K<0.01%013F-HRTimeline
Redwood Park Advisors LLC2,184$3.43K<0.01%013F-HRTimeline
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA1,751$3K<0.01%-3,05113F-HRTimelineGroup
Parallel Advisors, LLC1,854$2.91K<0.01%013F-HR/ATimeline
Larson Financial Group LLC1,444$2.27K<0.01%-2613F-HRTimeline
Essential Partners LLC1,060$1.66K<0.01%new13F-HRTimeline
Cheviot Value Management, LLC980$1.54K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.944$1.48K<0.01%-31213F-HR/ATimelineGroup
GAMMA Investing LLC932$1.46K<0.01%new13F-HRTimeline
North Star Investment Management Corp.550$864<0.01%013F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…510$801<0.01%-1,49313F-HR/ATimelineGroup
NISA INVESTMENT ADVISORS, LLC490$769<0.01%013F-HRTimeline
Dynamic Wealth Strategies, LLC411$645<0.01%013F-HRTimeline
SIGNATUREFD, LLC361$567<0.01%013F-HRTimeline
Comprehensive Financial Planning, Inc./…323$507<0.01%013F-HRTimeline
SIMPLEX TRADING, LLC283$444<0.01%-14713F-HRTimeline
CENTRAL TRUST Co171$269<0.01%013F-HRTimeline
Arax Advisory Partners8$215<0.01%-1613F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…127$199<0.01%new13F-HRTimelineGroup
IFP Advisors, Inc95$149<0.01%new13F-HRTimeline
ROTHSCHILD INVESTMENT LLC88$138<0.01%+8513F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC58$91<0.01%new13F-HRTimeline
FARMERS & MERCHANTS INVESTMENTS INCin group FARMERS & MERCHANTS INVESTMEN…53$83<0.01%013F-HRTimelineGroup
Farther Finance Advisors, LLC31$48<0.01%+3013F-HRTimeline
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…29$45<0.01%new13F-HRTimelineGroup
SBI Securities Co., Ltd.24$38<0.01%013F-HRTimeline
MATHER GROUP, LLC.21$33<0.01%new13F-HRTimeline
Wealth Preservation Advisors, LLC19$30<0.01%new13F-HRTimeline
True Wealth Design, LLC16$26<0.01%+1013F-HRTimeline
Root Financial Partners, LLC13$20<0.01%new13F-HRTimeline
SJS Investment Consulting Inc.3$5<0.01%new13F-HRTimeline
Caitong International Asset Management …1$2<0.01%013F-HRTimeline