OmniAb (OABI) Institutional Ownership $1.58 -0.02 (-1.25%) Closing price 04:00 PM EasternExtended Trading$1.66 +0.09 (+5.38%) As of 05:43 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for OmniAb (NASDAQ:OABI)CurrentInstitutional OwnershipPercentage72.08%Number ofInstitutional Buyers(last 12 months)60TotalInstitutional Inflows(last 12 months)$22.94MNumber ofInstitutional Sellers(last 12 months)39TotalInstitutional Outflows(last 12 months)$21.09M Get OABI Insider Trade Alerts Want to know when executives and insiders are buying or selling OmniAb stock? 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Skip Chart & View Institutional Buying and Selling Data OABI Institutional Buying and Selling by Quarter OmniAb Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails8/15/2025 Corient Private Wealth LLC30,253$53K0.0%N/A0.025% 8/15/2025 Boothbay Fund Management LLC188,554$328K0.0%-50.1%0.154% 8/15/2025 Bridgeway Capital Management LLC53,900$94K0.0%N/A0.044% 8/15/2025 Brevan Howard Capital Management LP53,779$94K0.0%N/A0.044% 8/15/2025 Bank of America Corp DE71,031$124K0.0%-86.9%0.058% 8/15/2025 Ameriprise Financial Inc.279,789$487K0.0%+854.6%0.229% 8/14/2025 Kent Lake PR LLC1,750,000$3.05M1.4%+677.8%1.433% 8/14/2025 Jane Street Group LLC153,736$268K0.0%+90.3%0.126% 8/14/2025 Murchinson Ltd.502,810$875K0.3%-50.1%0.412% 8/14/2025 The Manufacturers Life Insurance Company 44,809$78K0.0%+20.5%0.037% Get the Latest News and Ratings for OABI and Related StocksEnter your email address below to receive the latest news and analysts' ratings for OmniAb and its competitors with MarketBeat's FREE daily newsletter. 8/14/2025 Sei Investments Co.61,126$106K0.0%+166.5%0.050% 8/14/2025 Cerity Partners LLC22,612$39K0.0%+111.5%0.019% 8/13/2025 Marshall Wace LLP359,665$626K0.0%N/A0.294% 8/13/2025 Invesco Ltd.109,613$191K0.0%+17.0%0.090% 8/13/2025 Isthmus Partners LLC568,043$988K0.1%+21.2%0.465% 8/12/2025 Cornerstone Capital Inc.163,762$285K0.0%-4.8%0.134% 8/12/2025 XTX Topco Ltd137,171$239K0.0%+156.5%0.112% 8/12/2025 Private Management Group Inc.2,558,045$4.45M0.1%+1.1%2.094% 8/12/2025 Rhumbline Advisers160,728$280K0.0%+6.0%0.132% 8/12/2025 JPMorgan Chase & Co.793,734$1.38M0.0%+28.3%0.650% 8/8/2025 Intech Investment Management LLC58,224$101K0.0%-43.2%0.048% 8/8/2025 Geode Capital Management LLC2,439,424$4.25M0.0%-0.9%1.997% 8/6/2025 Towerview LLC831,100$1.45M1.0%+43.3%0.680% 7/30/2025 Connors Investor Services Inc.62,000$108K0.0%+25.0%0.051% 7/25/2025 Vanguard Personalized Indexing Management LLC45,165$79K0.0%N/A0.037% 7/15/2025 Public Employees Retirement System of Ohio96,361$168K0.0%N/A0.079% 7/9/2025 Woodstock Corp621,684$1.08M0.1%-16.3%0.509% 6/27/2025 Goldman Sachs Group Inc.243,669$585K0.0%-55.6%0.199% 5/19/2025 Jane Street Group LLC80,778$194K0.0%+26.3%0.066% 5/16/2025 Goldman Sachs Group Inc.243,669$585K0.0%-55.6%0.200% 5/16/2025 Murchinson Ltd.1,007,810$2.42M0.1%+0.8%0.825% 5/16/2025 AQR Capital Management LLC10,271$25K0.0%N/A0.008% 5/16/2025 ADAR1 Capital Management LLC126,108$303K0.1%-54.7%0.103% 5/15/2025 PDT Partners LLC14,709$35K0.0%-73.8%0.012% 5/15/2025 First Sabrepoint Capital Management LP410,000$984K0.4%-71.9%0.336% 5/14/2025 MetLife Investment Management LLC36,627$88K0.0%-24.4%0.030% 5/13/2025 American Century Companies Inc.181,408$435K0.0%+15.4%0.149% 5/12/2025 Knott David M Jr982,336$2.36M1.1%-10.2%0.804% 5/12/2025 Nuveen LLC227,801$547K0.0%N/A0.187% 5/9/2025 Deutsche Bank AG432,859$1.04M0.0%-30.9%0.354% Leaked Gov’t Memo Reveals $100 Trillion Deadline (Ad)Only Days Left to Claim Your Share of Trump's $100T Play Trump's economic blueprint is about to go live, and the deadline is fast-approaching. A new federal plan could legally unlock $100 trillion in U.S. resources... and one $10 stock could lead the charge. Former hedge fund manager Whitney Tilson explains how to act now, before this hits the headlines.Click here now to discover the full story and how to stake your claim before this land rush goes ful5/9/2025 Charles Schwab Investment Management Inc.810,978$1.95M0.0%-1.1%0.664% 5/9/2025 PNC Financial Services Group Inc.16,276$39K0.0%+279.4%0.013% 5/7/2025 Private Management Group Inc.2,529,759$6.07M0.2%+13.3%2.071% 5/6/2025 Towerview LLC580,000$1.39M1.0%+5.5%0.475% 5/6/2025 Royce & Associates LP817,080$1.96M0.0%+15.6%0.669% 5/6/2025 Universal Beteiligungs und Servicegesellschaft mbH108,111$259K0.0%N/A0.089% 5/1/2025 Rice Hall James & Associates LLC2,580,780$6.19M0.4%-2.6%2.113% 5/1/2025 Isthmus Partners LLC468,707$1.13M0.1%+3.4%0.384% 4/30/2025 Cerity Partners LLC10,693$26K0.0%N/A0.009% 4/24/2025 Villere ST Denis J & Co. LLC1,437,944$3.45M0.3%-1.9%1.177% 4/17/2025 Chicago Capital LLC2,620,454$6.29M0.2%-11.9%2.146% 4/9/2025 Woodstock Corp742,700$1.78M0.2%-7.5%0.608% 3/18/2025 California State Teachers Retirement System77,953$276K0.0%-6.8%0.055% 2/17/2025 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC124,021$439K0.0%-3.3%0.088% 2/17/2025 Squarepoint Ops LLC39,264$139K0.0%+33.3%0.028% 2/17/2025 Two Sigma Investments LP10,292$36K0.0%-32.3%0.007% 2/17/2025 Sherbrooke Park Advisers LLC17,226$61K0.0%+53.5%0.012% 2/17/2025 ProShare Advisors LLC31,724$112K0.0%+29.9%0.022% 2/17/2025 Northeast Financial Consultants Inc110,996$393K0.0%N/A0.079% 2/17/2025 Millennium Management LLC186,745$661K0.0%+49.7%0.132% 2/17/2025 Janus Henderson Group PLC7,960,321$28.18M0.0%+1.1%5.637% 2/17/2025 First Sabrepoint Capital Management LP1,460,602$5.17M1.4%-12.3%1.034% 2/17/2025 Deutsche Bank AG626,106$2.22M0.0%+5.3%0.443% 2/17/2025 Balyasny Asset Management L.P.51,159$181K0.0%N/A0.036% 2/17/2025 Bank of America Corp DE616,359$2.18M0.0%-14.7%0.436% 2/17/2025 BNP Paribas Financial Markets17,549$62K0.0%N/A0.012% 2/14/2025 Jane Street Group LLC63,955$226K0.0%-53.1%0.045% 2/14/2025 Connors Investor Services Inc.29,611$105K0.0%+18.4%0.021% 2/14/2025 PDT Partners LLC56,247$199K0.0%+93.9%0.040% 2/14/2025 Northern Trust Corp882,455$3.12M0.0%+5.4%0.625% 2/14/2025 Price T Rowe Associates Inc. MD38,217$136K0.0%+26.3%0.027% 2/14/2025 Hsbc Holdings PLC10,735$38K0.0%N/A0.008% 2/14/2025 MetLife Investment Management LLC48,425$171K0.0%-13.0%0.034% 2/14/2025 Dimensional Fund Advisors LP3,025,674$10.71M0.0%+4.9%2.143% 2/13/2025 XTX Topco Ltd51,790$183K0.0%N/A0.037% 2/13/2025 Barclays PLC164,315$582K0.0%+14.7%0.116% 2/13/2025 Legal & General Group Plc75,691$268K0.0%-9.4%0.054% 2/13/2025 Invesco Ltd.93,653$332K0.0%+3.3%0.066% 2/13/2025 ADAR1 Capital Management LLC278,108$985K0.2%-79.2%0.197% 2/13/2025 Wells Fargo & Company MN62,859$223K0.0%+24.3%0.045% 2/12/2025 Rangeley Capital LLC11,500$41K0.0%N/A0.008% 2/12/2025 Knott David M Jr1,094,505$3.88M1.4%-4.7%0.775% 2/12/2025 Geode Capital Management LLC2,353,442$8.33M0.0%+1.2%1.667% 2/12/2025 JPMorgan Chase & Co.1,001,797$3.55M0.0%+582.1%0.709% 2/11/2025 Corebridge Financial Inc.45,882$162K0.0%-7.0%0.032% 2/11/2025 Vanguard Group Inc.5,055,310$17.90M0.0%-2.6%3.580% 2/11/2025 KLP Kapitalforvaltning AS13,720$49K0.0%N/A0.010% 2/11/2025 American Century Companies Inc.157,211$557K0.0%+16.6%0.111% 2/10/2025 Royce & Associates LP707,080$2.50M0.0%+438.6%0.501% 2/10/2025 Swiss National Bank162,703$576K0.0%-5.2%0.115% [No Brainer Gold Play]: “Show me a better investment.” (Ad)A Historic Gold Announcement Is About to Rock Wall Street? For months, sharp-eyed analysts have watched the quiet buildup behind the scenes. Now, in just days, the floodgates are set to open. The greatest investor of all time could validate what Garrett Goggin has been saying for months: Gold is entering a once-in-a-generation mania. Front-running Buffett has never been more urgent — and four tiny miners could be your ticket to 100X gains.Click here to get Garrett’s Top Four picks now.2/7/2025 Isthmus Partners LLC453,135$1.60M0.2%+1.6%0.321% 2/7/2025 BBR Partners LLC20,000$71K0.0%-71.4%0.014% 2/6/2025 Charles Schwab Investment Management Inc.819,708$2.90M0.0%+4.1%0.580% 2/4/2025 Bank of New York Mellon Corp259,171$917K0.0%-19.6%0.184% 1/31/2025 Rice Hall James & Associates LLC2,649,007$9.38M0.5%-2.7%1.876% 1/30/2025 Palumbo Wealth Management LLC21,204$75K0.0%-13.9%0.015% 1/30/2025 Villere ST Denis J & Co. LLC1,466,070$5.19M0.5%-2.2%1.038% 1/30/2025 Rhumbline Advisers153,812$544K0.0%-11.4%0.109% 1/27/2025 Bleakley Financial Group LLC11,229$40K0.0%-42.4%0.008% 1/27/2025 Private Management Group Inc.2,233,048$7.91M0.3%-0.7%1.581% (Data available from 1/1/2016 forward) OABI Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of OABI shares? During the previous two years, 113 institutional investors and hedge funds held shares of OmniAb. The most heavily invested institutionals were Janus Henderson Group PLC ($28.18M), William Blair Investment Management LLC ($18.24M), Vanguard Group Inc. ($17.90M), Rubric Capital Management LP ($14.80M), Dimensional Fund Advisors LP ($10.71M), State Street Corp ($8.59M), and Chicago Capital LLC ($6.29M).Learn more on OmniAb's institutional investors. What percentage of OmniAb's stock is owned by institutional investors? 72.08% of OmniAb's stock is owned by institutional investors. Learn more on OABI's institutional investor holdings. Which institutional investors have been buying OmniAb's stock? Of the 90 institutional investors that purchased OmniAb's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Rubric Capital Management LP ($4.30M), Kent Lake PR LLC ($1.53M), JPMorgan Chase & Co. ($1.03M), Murchinson Ltd. ($1.01M), Towerview LLC ($746.10K), Royce & Associates LP ($685.80K), and ADAR1 Capital Management LLC ($478.17K). How much institutional buying is happening at OmniAb? Institutional investors have bought a total of 8,068,185 shares in the last 24 months. This purchase volume represents approximately $22.94M in transactions. Which of OmniAb's major shareholders have been selling company stock? Of the 39 institutional investors that sold OmniAb's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: First Sabrepoint Capital Management LP ($1.47M), ADAR1 Capital Management LLC ($1.21M), Villere ST Denis J & Co. LLC ($617.84K), Goldman Sachs Group Inc. ($609.73K), Bank of America Corp DE ($578.22K), Chicago Capital LLC ($562.52K), and Murchinson Ltd. ($505K). How much institutional selling is happening at OmniAb? Institutional investors have sold a total of 7,312,478 shares in the last 24 months. This volume of shares sold represents approximately $21.09M in transactions. 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