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OmniAb (OABI) Institutional Ownership

OmniAb logo
$2.37 +0.08 (+3.49%)
Closing price 04:00 PM Eastern
Extended Trading
$2.40 +0.03 (+1.10%)
As of 07:58 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 Massive. 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)
40
Total
Institutional Inflows
(last 12 months)
$17.08M
Number of
Institutional Sellers
(last 12 months)
25
Total
Institutional Outflows
(last 12 months)
$9.71M
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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
5/19/2026 Bank of America Corp DE121,656$191K0.0%+46.4%0.084%
5/15/2026 Rice Hall James & Associates LLC2,547,255$4.00M0.2%+6.1%1.759%
5/14/2026 Renaissance Technologies LLC269,600$423K0.0%+11.1%0.186%
5/14/2026 Sei Investments Co.60,578$95K0.0%+41.3%0.042%
5/14/2026 State of Wyoming24,694$39K0.0%+101.7%0.017%
5/7/2026 Dimensional Fund Advisors LP1,745,248$2.74M0.0%-18.9%1.205%
4/30/2026 Isthmus Partners LLC756,674$1.19M0.1%+4.9%0.523%
2/19/2026 Invesco Ltd.136,309$252K0.0%+9.9%0.095%
2/18/2026 Millennium Management LLC673,395$1.25M0.0%+135.6%0.468%
2/18/2026 Boothbay Fund Management LLC47,596$88K0.0%N/A0.033%
2/18/2026 Bridgeway Capital Management LLC198,900$368K0.0%+29.2%0.138%
2/17/2026 ADAR1 Capital Management LLC702,190$1.30M0.1%-35.6%0.488%
2/17/2026 Cadian Capital Management LP4,434,954$8.21M0.6%+20.7%3.081%
2/17/2026 Public Employees Retirement System of Ohio15,321$28K0.0%-84.1%0.011%
2/17/2026 Rice Hall James & Associates LLC2,401,088$4.44M0.2%-0.5%1.668%
2/16/2026 Squarepoint Ops LLC20,326$38K0.0%-42.6%0.014%
2/16/2026 Barclays PLC165,557$306K0.0%+15.2%0.115%
2/13/2026 The Manufacturers Life Insurance Company 28,943$54K0.0%N/A0.020%
2/13/2026 Charles Schwab Investment Management Inc.966,026$1.79M0.0%+23.0%0.671%
2/13/2026 State Street Corp2,048,996$3.79M0.0%-2.2%1.423%
2/13/2026 Wells Fargo & Company MN125,636$232K0.0%+55.9%0.087%
2/12/2026 Jane Street Group LLC135,378$250K0.0%-28.4%0.094%
2/12/2026 MetLife Investment Management LLC36,552$68K0.0%-35.5%0.025%
2/12/2026 Renaissance Technologies LLC242,700$449K0.0%-53.6%0.169%
2/12/2026 Dimensional Fund Advisors LP2,152,593$3.98M0.0%-15.5%1.495%
2/12/2026 Arbiter Partners Capital Management LLC192,585$356K0.2%+20.0%0.134%
2/12/2026 Private Management Group Inc.2,420,478$4.48M0.1%-3.9%1.681%
2/10/2026 Goldman Sachs Group Inc.540,277$1M0.0%-8.1%0.375%
2/10/2026 Intech Investment Management LLC37,820$70K0.0%-25.2%0.026%
2/9/2026 Geode Capital Management LLC2,722,692$5.04M0.0%+17.0%1.891%
2/5/2026 Isthmus Partners LLC721,309$1.33M0.1%+7.8%0.501%
2/4/2026 Towerview LLC1,000,000$1.85M1.3%+20.3%0.695%
1/14/2026 Woodstock Corp35,240$65K0.0%-90.0%0.024%
1/9/2026 SG Americas Securities LLC23,141$43K0.0%+96.6%0.016%
1/1/2026 JPMorgan Chase & Co.762,912$1.22M0.0%-3.9%0.530%
11/17/2025 Jacobs Levy Equity Management Inc.1,006,256$1.61M0.0%-9.0%0.699%
11/17/2025 Woodline Partners LP2,857,142$4.57M0.0%N/A1.985%
11/17/2025 Millennium Management LLC285,801$457K0.0%-56.1%0.199%
11/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.43,448$70K0.0%-21.9%0.030%
11/17/2025 Bank of America Corp DE48,030$77K0.0%-32.4%0.033%
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11/17/2025 Ameriprise Financial Inc.232,787$372K0.0%-16.8%0.162%
11/14/2025 ADAR1 Capital Management LLC1,090,628$1.75M0.2%+234.4%0.758%
11/14/2025 Two Sigma Investments LP291,735$467K0.0%+25.9%0.203%
11/14/2025 Bridgeway Capital Management LLC153,900$246K0.0%+185.5%0.107%
11/14/2025 Squarepoint Ops LLC35,431$57K0.0%+114.2%0.025%
11/14/2025 Private Management Group Inc.2,518,279$4.03M0.1%-1.6%1.749%
11/13/2025 Sei Investments Co.81,045$130K0.0%+32.6%0.056%
11/13/2025 BNP Paribas Financial Markets21,721$35K0.0%+92.5%0.015%
11/12/2025 Arbiter Partners Capital Management LLC160,529$257K0.2%N/A0.112%
11/12/2025 Dimensional Fund Advisors LP2,548,284$4.08M0.0%-12.5%1.770%
11/12/2025 Intech Investment Management LLC50,565$81K0.0%-13.2%0.035%
11/10/2025 Cornerstone Capital Inc.109,211$175K0.0%-33.3%0.076%
11/10/2025 Isthmus Partners LLC669,071$1.07M0.2%+17.8%0.465%
11/7/2025 GSA Capital Partners LLP262,371$420K0.0%+902.4%0.182%
11/7/2025Vanguard Group Inc.5,148,061$8.24M0.0%-2.3%3.576%
11/7/2025 JPMorgan Chase & Co.762,912$1.22M0.0%-3.9%0.530%
10/16/2025 Rice Hall James & Associates LLC2,412,038$3.86M0.2%-8.2%1.675%
10/9/2025 Voya Investment Management LLC19,496$31K0.0%-36.2%0.014%
10/7/2025 Woodstock Corp351,753$563K0.0%-43.4%0.244%
9/26/2025 Corient Private Wealth LLC30,253$53K0.0%N/A0.021%
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%
8/14/2025Kent 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%
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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%


OABI Institutional Ownership - Frequently Asked Questions

During the previous two years, 97 institutional investors and hedge funds held shares of OmniAb. The most heavily invested institutionals were Janus Henderson Group PLC ($28.18M), Vanguard Group Inc. ($8.24M), Cadian Capital Management LP ($8.21M), Chicago Capital LLC ($6.29M), Orchard Capital Management LLC ($5.09M), Geode Capital Management LLC ($5.04M), and Woodline Partners LP ($4.57M).Learn more on OmniAb's institutional investors.

72.08% of OmniAb's stock is owned by institutional investors. Learn more on OABI's institutional investor holdings.

Of the 72 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: Woodline Partners LP ($2.86M), Kent Lake PR LLC ($1.53M), JPMorgan Chase & Co. ($1.03M), Murchinson Ltd. ($1.01M), ADAR1 Capital Management LLC ($764.52K), Cadian Capital Management LP ($759.39K), and Towerview LLC ($750K).

Institutional investors have bought a total of 10,055,539 shares in the last 24 months. This purchase volume represents approximately $17.08M in transactions.

Of the 25 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: Dimensional Fund Advisors LP ($1.17M), Woodstock Corp ($707.46K), Murchinson Ltd. ($505K), Bank of America Corp DE ($494.91K), ADAR1 Capital Management LLC ($388.44K), Millennium Management LLC ($364.52K), and Goldman Sachs Group Inc. ($352.38K).

Institutional investors have sold a total of 5,531,359 shares in the last 24 months. This volume of shares sold represents approximately $9.71M in transactions.


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This page (NASDAQ:OABI) was last updated on 5/19/2026 by MarketBeat.com Staff.
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