Free Trial
→ This rock I’m holding could be worth trillions (From Porter & Company) (Ad) Free OABI Stock Alerts

OmniAb (OABI) Institutional Ownership

OmniAb logo
$1.91 0.00 (0.00%)
Closing price 08/1/2025 04:00 PM Eastern
Extended Trading
$1.92 +0.01 (+0.26%)
As of 08/1/2025 04:10 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.
Compare

Institutional Ownership Changes (13F Filings) for OmniAb (NASDAQ:OABI)

Current
Institutional Ownership
Percentage
72.08%
Number of
Institutional Buyers
(last 12 months)
53
Total
Institutional Inflows
(last 12 months)
$19.62M
Number of
Institutional Sellers
(last 12 months)
38
Total
Institutional Outflows
(last 12 months)
$27.49M
Get OABI Insider Trade Alerts

Want to know when executives and insiders are buying or selling OmniAb stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily.

Skip Chart & View Institutional Buying and Selling Data

OABI Institutional Buying and Selling by Quarter

OmniAb Major Shareholders & Ownership History

Export to Excel
Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
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%
6/27/2025Goldman 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%
4/24/2025 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%
3/18/2025California 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%
Jeff Bezos Launches "ChatGPT Killer"? (Ad)

Amazon just launched Nova—its secretive new AI system designed to rival ChatGPT. Bezos says he now spends 95% of his time focused on AI… but Nova is only part of the story. Behind the scenes, Amazon has been quietly investing in a breakthrough called “Helios” tech—a core enabler of the $40 trillion AI revolution. While Nova grabs headlines, this technology could be what truly transforms Amazon’s future. But one tiny startup—not Amazon—may offer the bigger upside.

Get the name of the small company at the center of the $40 trillion AI boom.
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%
2/14/2025 Connors 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%
2/11/2025 KLP 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%
1/30/2025 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%
1/30/2025Rhumbline Advisers153,812$544K0.0%-11.4%0.109%
1/27/2025 Bleakley Financial Group LLC11,229$40K0.0%-42.4%0.008%
1/27/2025Private Management Group Inc.2,233,048$7.91M0.3%-0.7%1.581%
1/27/2025Choreo LLC11,412$41K0.0%N/A0.008%
1/24/2025 Chicago Capital LLC2,975,451$10.53M0.3%-5.9%2.107%
1/22/2025 Court Place Advisors LLC23,556$83K0.0%-76.7%0.017%
1/17/2025SG Americas Securities LLC40,609$144K0.0%+16.5%0.029%
1/15/2025 Woodstock Corp802,578$2.84M0.3%+1.2%0.568%
12/26/2024JPMorgan Chase & Co.146,868$621K0.0%-10.2%0.104%
11/19/2024Barclays PLC143,215$606K0.0%+321.5%0.101%
11/16/2024Geode Capital Management LLC2,325,381$9.84M0.0%-0.6%1.968%
11/15/2024First Sabrepoint Capital Management LP1,665,000$7.04M2.0%-11.2%1.409%
11/15/2024Barclays PLC143,215$606K0.0%+321.5%0.121%
11/15/2024Jane Street Group LLC136,359$577K0.0%-21.2%0.115%
11/15/2024State Street Corp2,031,676$8.59M0.0%+1.7%1.719%
11/15/2024Murchinson Ltd.1,000,000$4.23M1.2%N/A0.846%
China just unlocked Nvidia’s AI chips—what that means for you (Ad)

Tired of Missing Big AI Moves Like Nvidia? You’re not the problem—your trading system is. Tim’s XGPT system tracks breaking AI news and shows when to trade.📈 AI-backed. Beginner-friendly. Results proven.

Watch the system in action.
11/15/2024Janus Henderson Group PLC7,871,328$33.30M0.0%+0.0%6.662%
11/14/2024PDT Partners LLC29,011$123K0.0%N/A0.025%
11/14/2024Captrust Financial Advisors16,599$70K0.0%-25.9%0.014%
11/14/2024Walleye Capital LLC14,320$61K0.0%N/A0.012%
11/14/2024Isthmus Partners LLC446,134$1.89M0.2%-15.6%0.378%
11/14/2024UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC128,202$542K0.0%-10.7%0.108%
11/14/2024BBR Partners LLC70,000$296K0.0%+250.0%0.059%
11/13/2024FMR LLC138,813$587K0.0%+10.6%0.117%
11/12/2024Charles Schwab Investment Management Inc.787,522$3.33M0.0%+2.1%0.666%
11/9/2024Intech Investment Management LLC16,437$70K0.0%N/A0.014%
(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, 111 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 Geode Capital Management LLC ($8.33M).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 88 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 ($5.00M), Murchinson Ltd. ($1.01M), JPMorgan Chase & Co. ($854.93K), Royce & Associates LP ($685.80K), Towerview LLC ($580K), ADAR1 Capital Management LLC ($478.17K), and Kent Lake Capital LLC ($396.15K).

How much institutional buying is happening at OmniAb?

Institutional investors have bought a total of 5,539,658 shares in the last 24 months. This purchase volume represents approximately $19.62M in transactions.

Which of OmniAb's major shareholders have been selling company stock?

Of the 38 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: Millennium Management LLC ($1.88M), 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), Chicago Capital LLC ($566.90K), and Kornitzer Capital Management Inc. KS ($321.11K).

How much institutional selling is happening at OmniAb?

Institutional investors have sold a total of 8,351,971 shares in the last 24 months. This volume of shares sold represents approximately $27.49M in transactions.


Related Companies

This page (NASDAQ:OABI) was last updated on 8/2/2025 by MarketBeat.com Staff
From Our Partners
Is Elon's empire crumbling?
The Tesla Shock Nobody Sees Coming While headlines scream "Tesla is doomed"... Jeff Brown has uncovered ...
Brownstone Research | Sponsored
Elon’s Secret Social Security Bombshell
To All Americans Born Before April 16th, 1963: Did Trump Just Give The Green Light To Radically RE-DO Social S...
Banyan Hill Publishing | Sponsored
Man Who Called Nvidia at $1.10 Says Buy This Now...
In 2004, one man called Nvidia before just about anyone knew it existed. Now, this same guy says a new comp...
The Oxford Club | Sponsored
Jeff Bezos Launches "ChatGPT Killer"?
Amazon just launched Nova—its secretive new AI system designed to rival ChatGPT. Bezos says he now spends 95% ...
Stansberry Research | Sponsored
Alien rocks potentially worth trillions…
It might look like just a weird rock—but it’s tied to a discovery 60 Minutes says could be worth up to $16 tri...
Porter & Company | Sponsored
[No Brainer Gold Play]: “Show me a better investment.”
A Historic Gold Announcement Is About to Rock Wall Street? For months, sharp-eyed analysts have watched the...
Golden Portfolio | Sponsored
Too busy to trade? Good.
Too busy to trade? That might be your edge. This after-hours strategy is built for people who don’t sit at ...
Timothy Sykes | Sponsored
This Social Security Shift Could Boost Benefits by 400%
If you currently collect Social Security—or plan to in the future—this may be one of the most important update...
InvestorPlace | Sponsored