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OmniAb (OABI) Institutional Ownership

OmniAb logo
$1.60 -0.10 (-5.88%)
Closing price 09/23/2025 04:00 PM Eastern
Extended Trading
$1.61 +0.01 (+0.63%)
As of 09/23/2025 07:25 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.
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Institutional Ownership Changes (13F Filings) for OmniAb (NASDAQ:OABI)

Current
Institutional Ownership
Percentage
72.08%
Number of
Institutional Buyers
(last 12 months)
61
Total
Institutional Inflows
(last 12 months)
$22.96M
Number of
Institutional Sellers
(last 12 months)
39
Total
Institutional Outflows
(last 12 months)
$21.09M
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OABI Institutional Buying and Selling by Quarter

OmniAb Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/4/2025 Osaic Holdings Inc.14,247$25K0.0%+214.4%0.012%
8/15/2025 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%
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%
5/19/2025Jane Street Group LLC80,778$194K0.0%+26.3%0.066%
5/16/2025Goldman Sachs Group Inc.243,669$585K0.0%-55.6%0.200%
5/16/2025Murchinson Ltd.1,007,810$2.42M0.1%+0.8%0.825%
5/16/2025AQR Capital Management LLC10,271$25K0.0%N/A0.008%
5/16/2025ADAR1 Capital Management LLC126,108$303K0.1%-54.7%0.103%
5/15/2025PDT Partners LLC14,709$35K0.0%-73.8%0.012%
5/15/2025First Sabrepoint Capital Management LP410,000$984K0.4%-71.9%0.336%
5/14/2025MetLife Investment Management LLC36,627$88K0.0%-24.4%0.030%
5/13/2025American Century Companies Inc.181,408$435K0.0%+15.4%0.149%
5/12/2025Knott David M Jr982,336$2.36M1.1%-10.2%0.804%
5/12/2025Nuveen LLC227,801$547K0.0%N/A0.187%
5/9/2025Deutsche Bank AG432,859$1.04M0.0%-30.9%0.354%
5/9/2025Charles Schwab Investment Management Inc.810,978$1.95M0.0%-1.1%0.664%
5/9/2025PNC Financial Services Group Inc.16,276$39K0.0%+279.4%0.013%
5/7/2025Private Management Group Inc.2,529,759$6.07M0.2%+13.3%2.071%
5/6/2025Towerview LLC580,000$1.39M1.0%+5.5%0.475%
5/6/2025Royce & Associates LP817,080$1.96M0.0%+15.6%0.669%
5/6/2025Universal Beteiligungs und Servicegesellschaft mbH108,111$259K0.0%N/A0.089%
5/1/2025Rice Hall James & Associates LLC2,580,780$6.19M0.4%-2.6%2.113%
5/1/2025Isthmus Partners LLC468,707$1.13M0.1%+3.4%0.384%
4/30/2025Cerity Partners LLC10,693$26K0.0%N/A0.009%
4/24/2025Villere ST Denis J & Co. LLC1,437,944$3.45M0.3%-1.9%1.177%
4/17/2025Chicago Capital LLC2,620,454$6.29M0.2%-11.9%2.146%
4/9/2025Woodstock Corp742,700$1.78M0.2%-7.5%0.608%
3/18/2025California State Teachers Retirement System77,953$276K0.0%-6.8%0.055%
2/17/2025UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC124,021$439K0.0%-3.3%0.088%
2/17/2025Squarepoint Ops LLC39,264$139K0.0%+33.3%0.028%
2/17/2025Two Sigma Investments LP10,292$36K0.0%-32.3%0.007%
2/17/2025Sherbrooke Park Advisers LLC17,226$61K0.0%+53.5%0.012%
2/17/2025ProShare Advisors LLC31,724$112K0.0%+29.9%0.022%
2/17/2025Northeast Financial Consultants Inc110,996$393K0.0%N/A0.079%
2/17/2025Millennium Management LLC186,745$661K0.0%+49.7%0.132%
2/17/2025Janus Henderson Group PLC7,960,321$28.18M0.0%+1.1%5.637%
2/17/2025First Sabrepoint Capital Management LP1,460,602$5.17M1.4%-12.3%1.034%
2/17/2025Deutsche Bank AG626,106$2.22M0.0%+5.3%0.443%
2/17/2025Balyasny Asset Management L.P.51,159$181K0.0%N/A0.036%
2/17/2025Bank of America Corp DE616,359$2.18M0.0%-14.7%0.436%
2/17/2025BNP Paribas Financial Markets17,549$62K0.0%N/A0.012%
2/14/2025Jane Street Group LLC63,955$226K0.0%-53.1%0.045%
2/14/2025Connors Investor Services Inc.29,611$105K0.0%+18.4%0.021%
2/14/2025PDT Partners LLC56,247$199K0.0%+93.9%0.040%
2/14/2025Northern Trust Corp882,455$3.12M0.0%+5.4%0.625%
2/14/2025Price T Rowe Associates Inc. MD38,217$136K0.0%+26.3%0.027%
2/14/2025Hsbc Holdings PLC10,735$38K0.0%N/A0.008%
2/14/2025MetLife Investment Management LLC48,425$171K0.0%-13.0%0.034%
2/14/2025Dimensional Fund Advisors LP3,025,674$10.71M0.0%+4.9%2.143%
2/13/2025XTX Topco Ltd51,790$183K0.0%N/A0.037%
2/13/2025Barclays PLC164,315$582K0.0%+14.7%0.116%
2/13/2025Legal & General Group Plc75,691$268K0.0%-9.4%0.054%
2/13/2025Invesco Ltd.93,653$332K0.0%+3.3%0.066%
2/13/2025ADAR1 Capital Management LLC278,108$985K0.2%-79.2%0.197%
2/13/2025Wells Fargo & Company MN62,859$223K0.0%+24.3%0.045%
2/12/2025Rangeley Capital LLC11,500$41K0.0%N/A0.008%
2/12/2025Knott David M Jr1,094,505$3.88M1.4%-4.7%0.775%
2/12/2025Geode Capital Management LLC2,353,442$8.33M0.0%+1.2%1.667%
2/12/2025JPMorgan Chase & Co.1,001,797$3.55M0.0%+582.1%0.709%
2/11/2025Corebridge Financial Inc.45,882$162K0.0%-7.0%0.032%
2/11/2025Vanguard Group Inc.5,055,310$17.90M0.0%-2.6%3.580%
2/11/2025KLP Kapitalforvaltning AS13,720$49K0.0%N/A0.010%
2/11/2025American Century Companies Inc.157,211$557K0.0%+16.6%0.111%
2/10/2025Royce & Associates LP707,080$2.50M0.0%+438.6%0.501%
2/10/2025Swiss National Bank162,703$576K0.0%-5.2%0.115%
2/7/2025Isthmus Partners LLC453,135$1.60M0.2%+1.6%0.321%
2/7/2025BBR Partners LLC20,000$71K0.0%-71.4%0.014%
2/6/2025Charles Schwab Investment Management Inc.819,708$2.90M0.0%+4.1%0.580%
2/4/2025Bank of New York Mellon Corp259,171$917K0.0%-19.6%0.184%
1/31/2025Rice Hall James & Associates LLC2,649,007$9.38M0.5%-2.7%1.876%
1/30/2025Palumbo Wealth Management LLC21,204$75K0.0%-13.9%0.015%
1/30/2025Villere ST Denis J & Co. LLC1,466,070$5.19M0.5%-2.2%1.038%
1/30/2025Rhumbline Advisers153,812$544K0.0%-11.4%0.109%
1/27/2025Bleakley Financial Group LLC11,229$40K0.0%-42.4%0.008%
(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, 114 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 91 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 8,077,901 shares in the last 24 months. This purchase volume represents approximately $22.96M 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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This page (NASDAQ:OABI) was last updated on 9/24/2025 by MarketBeat.com Staff
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