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Omeros (OMER) Institutional Ownership

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$4.08 -0.07 (-1.69%)
Closing price 04:00 PM Eastern
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$4.14 +0.06 (+1.45%)
As of 04:33 PM Eastern
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Institutional Ownership Changes (13F Filings) for Omeros (NASDAQ:OMER)

Current
Institutional Ownership
Percentage
48.79%
Number of
Institutional Buyers
(last 12 months)
66
Total
Institutional Inflows
(last 12 months)
$19.75M
Number of
Institutional Sellers
(last 12 months)
35
Total
Institutional Outflows
(last 12 months)
$11.78M
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OMER Institutional Buying and Selling by Quarter

Omeros Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/19/2025 B. Riley Wealth Advisors Inc.10,760$32K0.0%N/A0.017%
8/19/2025 Newbridge Financial Services Group Inc.93,420$280K0.0%N/A0.151%
8/18/2025 Nomura Holdings Inc.88,469$265K0.0%-87.0%0.143%
8/15/2025 Tower Research Capital LLC TRC 13,414$40K0.0%+829.6%0.022%
8/15/2025 Corient Private Wealth LLC530,614$1.59M0.0%-26.3%0.859%
8/15/2025 BNP Paribas Financial Markets25,272$76K0.0%+548.7%0.041%
8/15/2025 Brevan Howard Capital Management LP105,299$316K0.0%N/A0.170%
8/15/2025 Ameriprise Financial Inc.116,536$350K0.0%-3.3%0.189%
8/14/2025 Jane Street Group LLC85,382$256K0.0%-22.4%0.138%
8/14/2025 Raymond James Financial Inc.9,781$29K0.0%-22.1%0.016%
8/14/2025 Sei Investments Co.13,416$40K0.0%N/A0.022%
8/13/2025 Marshall Wace LLP741,376$2.22M0.0%+15.1%1.200%
8/13/2025 Invesco Ltd.116,688$350K0.0%+34.1%0.189%
8/12/2025 XTX Topco Ltd63,777$191K0.0%N/A0.103%
8/12/2025 Rhumbline Advisers98,825$296K0.0%-8.2%0.160%
8/12/2025 JPMorgan Chase & Co.31,985$96K0.0%-10.6%0.052%
8/8/2025 Intech Investment Management LLC34,108$102K0.0%+28.4%0.055%
8/5/2025 Corton Capital Inc.38,967$117K0.1%N/A0.063%
8/5/2025 Bank of Montreal Can571,095$1.71M0.0%+1.4%0.925%
7/29/2025 International Assets Investment Management LLC15,550$47K0.0%N/A0.027%
7/28/2025 Harbour Investments Inc.13,469$40K0.0%+46.1%0.023%
7/25/2025 Cypress Capital Group42,000$126K0.0%+20.7%0.072%
7/21/2025 Empirical Financial Services LLC d.b.a. Empirical Wealth Management40,500$122K0.0%+35.0%0.069%
7/10/2025 Wealth Enhancement Advisory Services LLC26,156$84K0.0%-62.8%0.045%
6/27/2025 Goldman Sachs Group Inc.181,155$1.49M0.0%-14.4%0.309%
5/21/2025Acadian Asset Management LLC43,695$357K0.0%N/A0.075%
5/16/2025Goldman Sachs Group Inc.181,155$1.49M0.0%-14.4%0.311%
5/16/2025Jacobs Levy Equity Management Inc.85,514$703K0.0%-18.2%0.147%
5/16/2025AQR Capital Management LLC34,700$285K0.0%-11.5%0.060%
5/16/2025Ancora Advisors LLC5,800$48K0.0%-93.2%0.010%
5/15/2025Nomura Holdings Inc.679,020$5.58M0.0%-9.1%1.165%
5/15/2025Trexquant Investment LP10,760$88K0.0%N/A0.018%
5/14/2025AlphaQuest LLC15,687$129K0.0%-45.7%0.027%
5/14/2025Hsbc Holdings PLC17,138$142K0.0%N/A0.029%
5/14/2025Wellington Management Group LLP136,002$1.12M0.0%N/A0.233%
5/12/2025Nuveen LLC114,057$938K0.0%N/A0.196%
5/12/2025Invesco Ltd.87,044$716K0.0%+169.1%0.149%
5/12/2025Connor Clark & Lunn Investment Management Ltd.10,555$87K0.0%-90.7%0.018%
5/9/2025Deutsche Bank AG42,019$345K0.0%+4.9%0.072%
5/9/2025Charles Schwab Investment Management Inc.463,882$3.81M0.0%-2.4%0.796%
5/9/2025Vanguard Group Inc.3,237,256$26.61M0.0%+3.0%5.552%
5/8/2025SPC Financial Inc.17,400$143K0.0%-10.3%0.030%
5/8/2025Harbour Investments Inc.9,218$76K0.0%+51.9%0.016%
5/5/2025Stordahl Capital Management Inc.32,656$268K0.1%-18.4%0.056%
5/1/2025New York State Common Retirement Fund11,413$94K0.0%-34.1%0.020%
4/29/2025Bank of New York Mellon Corp151,062$1.24M0.0%+2.2%0.260%
4/17/2025Sowell Financial Services LLC10,750$88K0.0%N/A0.019%
4/17/2025Brighton Jones LLC30,714$252K0.0%+11.3%0.053%
4/16/2025Wealth Enhancement Advisory Services LLC70,398$579K0.0%N/A0.121%
4/7/2025GAMMA Investing LLC7,439$61K0.0%+14,486.3%0.013%
2/17/2025Squarepoint Ops LLC32,009$316K0.0%-32.4%0.055%
2/17/2025Two Sigma Advisers LP38,800$383K0.0%-15.7%0.067%
2/17/2025Two Sigma Investments LP162,991$1.61M0.0%+8.8%0.281%
2/17/2025ProShare Advisors LLC18,496$183K0.0%+75.0%0.032%
2/17/2025Nomura Holdings Inc.747,281$7.38M0.0%+136.2%1.290%
2/17/2025Nuveen Asset Management LLC102,921$1.02M0.0%-8.4%0.178%
2/17/2025Millennium Management LLC85,671$846K0.0%+46.2%0.148%
2/17/2025MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.31,831$314K0.0%+3.6%0.055%
2/17/2025Jacobs Levy Equity Management Inc.104,538$1.03M0.0%N/A0.180%
2/17/2025Deutsche Bank AG40,046$396K0.0%+38.2%0.069%
2/17/2025Bridgeway Capital Management LLC155,100$1.53M0.0%-3.8%0.268%
2/17/2025BNP Paribas Financial Markets7,452$74K0.0%-39.8%0.013%
2/17/2025Ameriprise Financial Inc.120,493$1.19M0.0%+2.0%0.208%
2/17/2025Ancora Advisors LLC85,800$848K0.0%+1,036.4%0.148%
2/14/2025Comerica Bank35,000$346K0.0%+16.7%0.060%
2/14/2025The Manufacturers Life Insurance Company20,479$202K0.0%-5.4%0.035%
2/14/2025Susquehanna Fundamental Investments LLC150,557$1.49M0.0%N/A0.260%
2/14/2025Virtus ETF Advisers LLC8,373$83K0.0%N/A0.014%
2/14/2025Voya Investment Management LLC17,233$170K0.0%-9.4%0.030%
2/14/2025Price T Rowe Associates Inc. MD39,582$392K0.0%+12.5%0.068%
2/14/2025Stifel Financial Corp1,581,205$15.62M0.0%-17.0%2.729%
2/14/2025Tower Research Capital LLC TRC4,467$44K0.0%+79.0%0.008%
2/13/2025Marshall Wace LLP44,205$437K0.0%N/A0.076%
2/13/2025XTX Topco Ltd20,846$206K0.0%N/A0.036%
2/13/2025Barclays PLC103,726$1.03M0.0%+9.6%0.179%
2/13/2025Raymond James Financial Inc.12,549$124K0.0%N/A0.022%
2/13/2025Invesco Ltd.32,348$320K0.0%-6.0%0.056%
2/13/2025Cerity Partners LLC28,989$286K0.0%+9.9%0.050%
2/12/2025ExodusPoint Capital Management LP15,495$153K0.0%-65.3%0.027%
2/12/2025Franklin Resources Inc.13,186$130K0.0%N/A0.023%
2/12/2025Alliancebernstein L.P.50,990$504K0.0%+153.4%0.088%
2/12/2025JPMorgan Chase & Co.32,134$317K0.0%+31.3%0.055%
2/11/2025Corebridge Financial Inc.27,808$275K0.0%-7.0%0.048%
2/11/2025Vanguard Group Inc.3,141,657$31.04M0.0%-3.6%5.421%
2/11/2025Quantbot Technologies LP4,671$46K0.0%N/A0.008%
2/11/2025Mindset Wealth Management LLC63,000$622K0.2%+4.8%0.109%
2/10/2025Corient Private Wealth LLC733,449$7.25M0.0%-6.7%1.266%
2/10/2025Picton Mahoney Asset Management5,040$50K0.0%+692.5%0.009%
2/10/2025Connor Clark & Lunn Investment Management Ltd.113,326$1.12M0.0%N/A0.196%
2/10/2025Truvestments Capital LLC3,102$31K0.0%+116.5%0.005%
2/7/2025AlphaQuest LLC28,894$285K0.0%N/A0.050%
2/6/2025Raymond James Financial Inc.12,549$124K0.0%N/A0.022%
2/6/2025Charles Schwab Investment Management Inc.475,526$4.70M0.0%-2.0%0.821%
2/5/2025US Bancorp DE8,205$81K0.0%N/A0.014%
2/4/2025Bank of New York Mellon Corp147,741$1.46M0.0%-3.2%0.255%
1/31/2025New York State Common Retirement Fund17,313$171K0.0%+245.4%0.030%
1/30/2025Blue Trust Inc.3,090$31K0.0%-38.2%0.005%
1/24/2025China Universal Asset Management Co. Ltd.12,287$121K0.0%N/A0.021%
1/23/2025Stordahl Capital Management Inc.40,000$395K0.1%N/A0.069%
1/21/2025Brighton Jones LLC27,589$273K0.0%-18.0%0.048%
(Data available from 1/1/2016 forward)

OMER Institutional Ownership - Frequently Asked Questions

Who are the largest shareholders of OMER shares?

During the previous two years, 87 institutional investors and hedge funds held shares of Omeros. The most heavily invested institutionals were Vanguard Group Inc. ($26.61M), Stifel Financial Corp ($15.62M), Geode Capital Management LLC ($5.32M), State Street Corp ($4.87M), Charles Schwab Investment Management Inc. ($3.81M), Marshall Wace LLP ($2.22M), and Bank of Montreal Can ($1.71M).Learn more on Omeros' institutional investors.

What percentage of Omeros' stock is owned by institutional investors?

48.79% of Omeros' stock is owned by institutional investors. Learn more on OMER's institutional investor holdings.

Which institutional investors have been buying Omeros' stock?

Of the 70 institutional investors that purchased Omeros' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Nomura Holdings Inc. ($430.93K), Susquehanna Fundamental Investments LLC ($306.51K), Wellington Management Group LLP ($212.95K), Vanguard Group Inc. ($176.95K), Marshall Wace LLP ($141.43K), Barclays PLC ($128.29K), and Ancora Advisors LLC ($117.73K).

How much institutional buying is happening at Omeros?

Institutional investors have bought a total of 2,633,205 shares in the last 24 months. This purchase volume represents approximately $19.75M in transactions.

Which of Omeros' major shareholders have been selling company stock?

Of the 35 institutional investors that sold Omeros' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Nomura Holdings Inc. ($658.81K), Stifel Financial Corp ($323.00K), Corient Private Wealth LLC ($242.81K), Vanguard Group Inc. ($117.94K), Connor Clark & Lunn Investment Management Ltd. ($102.77K), Ancora Advisors LLC ($80K), and Goldman Sachs Group Inc. ($60.89K).

How much institutional selling is happening at Omeros?

Institutional investors have sold a total of 1,890,168 shares in the last 24 months. This volume of shares sold represents approximately $11.78M in transactions.


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This page (NASDAQ:OMER) was last updated on 9/15/2025 by MarketBeat.com Staff
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