Omeros (OMER) Institutional Ownership $3.11 -0.18 (-5.47%) Closing price 05/21/2025 04:00 PM EasternExtended Trading$3.15 +0.04 (+1.29%) As of 05/21/2025 07:39 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 InterestSustainabilityTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for Omeros (NASDAQ:OMER)CurrentInstitutional OwnershipPercentage48.79%Number ofInstitutional Buyers(last 12 months)59TotalInstitutional Inflows(last 12 months)$18.43MNumber ofInstitutional Sellers(last 12 months)31TotalInstitutional Outflows(last 12 months)$8.97M Get OMER Insider Trade Alerts Want to know when executives and insiders are buying or selling Omeros stock? 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Email Address Skip Chart & View Institutional Buying and Selling Data OMER Institutional Buying and Selling by Quarter Omeros Major Shareholders & Ownership History Export to ExcelReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/21/2025Acadian Asset Management LLC43,695$357K0.0%N/A0.075% 5/16/2025 Goldman Sachs Group Inc.181,155$1.49M0.0%-14.4%0.311% 5/16/2025 Jacobs Levy Equity Management Inc.85,514$703K0.0%-18.2%0.147% 5/16/2025 AQR Capital Management LLC34,700$285K0.0%-11.5%0.060% 5/16/2025 Ancora Advisors LLC5,800$48K0.0%-93.2%0.010% 5/15/2025 Nomura Holdings Inc.679,020$5.58M0.0%-9.1%1.165% 5/15/2025 Trexquant Investment LP10,760$88K0.0%N/A0.018% 5/14/2025 AlphaQuest LLC15,687$129K0.0%-45.7%0.027% 5/14/2025 Hsbc Holdings PLC17,138$142K0.0%N/A0.029% 5/14/2025 Wellington Management Group LLP136,002$1.12M0.0%N/A0.233% Get the Latest News and Ratings for OMER and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Omeros and its competitors with MarketBeat's FREE daily newsletter. 5/12/2025 Nuveen LLC114,057$938K0.0%N/A0.196% 5/12/2025 Invesco Ltd.87,044$716K0.0%+169.1%0.149% 5/12/2025 Connor Clark & Lunn Investment Management Ltd.10,555$87K0.0%-90.7%0.018% 5/9/2025 Deutsche Bank AG42,019$345K0.0%+4.9%0.072% 5/9/2025 Charles Schwab Investment Management Inc.463,882$3.81M0.0%-2.4%0.796% 5/9/2025 Vanguard Group Inc.3,237,256$26.61M0.0%+3.0%5.552% 5/8/2025 SPC Financial Inc.17,400$143K0.0%-10.3%0.030% 5/8/2025 Harbour Investments Inc.9,218$76K0.0%+51.9%0.016% 5/5/2025 Stordahl Capital Management Inc.32,656$268K0.1%-18.4%0.056% 5/1/2025 New York State Common Retirement Fund11,413$94K0.0%-34.1%0.020% 4/29/2025 Bank of New York Mellon Corp151,062$1.24M0.0%+2.2%0.260% 4/17/2025 Sowell Financial Services LLC10,750$88K0.0%N/A0.019% 4/17/2025 Brighton Jones LLC30,714$252K0.0%+11.3%0.053% 4/16/2025 Wealth Enhancement Advisory Services LLC70,398$579K0.0%N/A0.121% 4/7/2025 GAMMA Investing LLC7,439$61K0.0%+14,486.3%0.013% 2/17/2025 Squarepoint Ops LLC32,009$316K0.0%-32.4%0.055% 2/17/2025 Two Sigma Advisers LP38,800$383K0.0%-15.7%0.067% 2/17/2025 Two Sigma Investments LP162,991$1.61M0.0%+8.8%0.281% 2/17/2025 ProShare Advisors LLC18,496$183K0.0%+75.0%0.032% 2/17/2025 Nomura 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% 2/17/2025 Millennium Management LLC85,671$846K0.0%+46.2%0.148% 2/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.31,831$314K0.0%+3.6%0.055% 2/17/2025 Jacobs Levy Equity Management Inc.104,538$1.03M0.0%N/A0.180% 2/17/2025 Deutsche Bank AG40,046$396K0.0%+38.2%0.069% 2/17/2025 Bridgeway Capital Management LLC155,100$1.53M0.0%-3.8%0.268% 2/17/2025 BNP Paribas Financial Markets7,452$74K0.0%-39.8%0.013% 2/17/2025 Ameriprise Financial Inc.120,493$1.19M0.0%+2.0%0.208% 2/17/2025 Ancora Advisors LLC85,800$848K0.0%+1,036.4%0.148% 2/14/2025 Comerica Bank35,000$346K0.0%+16.7%0.060% Trump’s treachery (Ad)I think Trump’s Treasury Secretary is destroying the stock market on purpose. And no one on Wall Street seems to understand why. Like an addict who needs desperate help, Trump’s Treasury pick, Scott Bessent, is putting America through a “detox period” — and I think it’s going to be absolutely brutal for our economy. Why’s he doing this?You may have already noticed the effect on your portfolio as markets have begun to bleed.2/14/2025 The Manufacturers Life Insurance Company20,479$202K0.0%-5.4%0.035% 2/14/2025 Susquehanna Fundamental Investments LLC150,557$1.49M0.0%N/A0.260% 2/14/2025 Virtus ETF Advisers LLC8,373$83K0.0%N/A0.014% 2/14/2025 Voya Investment Management LLC17,233$170K0.0%-9.4%0.030% 2/14/2025 Price T Rowe Associates Inc. MD39,582$392K0.0%+12.5%0.068% 2/14/2025 Stifel Financial Corp1,581,205$15.62M0.0%-17.0%2.729% 2/14/2025 Tower Research Capital LLC TRC4,467$44K0.0%+79.0%0.008% 2/13/2025 Marshall Wace LLP44,205$437K0.0%N/A0.076% 2/13/2025 XTX Topco Ltd20,846$206K0.0%N/A0.036% 2/13/2025 Barclays PLC103,726$1.03M0.0%+9.6%0.179% 2/13/2025 Raymond James Financial Inc.12,549$124K0.0%N/A0.022% 2/13/2025 Invesco Ltd.32,348$320K0.0%-6.0%0.056% 2/13/2025 Cerity Partners LLC28,989$286K0.0%+9.9%0.050% 2/12/2025 ExodusPoint Capital Management LP15,495$153K0.0%-65.3%0.027% 2/12/2025 Franklin Resources Inc.13,186$130K0.0%N/A0.023% 2/12/2025 Alliancebernstein L.P.50,990$504K0.0%+153.4%0.088% 2/12/2025 JPMorgan Chase & Co.32,134$317K0.0%+31.3%0.055% 2/11/2025 Corebridge Financial Inc.27,808$275K0.0%-7.0%0.048% 2/11/2025 Vanguard Group Inc.3,141,657$31.04M0.0%-3.6%5.421% 2/11/2025 Quantbot Technologies LP4,671$46K0.0%N/A0.008% 2/11/2025 Mindset Wealth Management LLC63,000$622K0.2%+4.8%0.109% 2/10/2025 Corient Private Wealth LLC733,449$7.25M0.0%-6.7%1.266% 2/10/2025 Picton Mahoney Asset Management5,040$50K0.0%+692.5%0.009% 2/10/2025 Connor Clark & Lunn Investment Management Ltd.113,326$1.12M0.0%N/A0.196% 2/10/2025 Truvestments Capital LLC3,102$31K0.0%+116.5%0.005% 2/7/2025 AlphaQuest LLC28,894$285K0.0%N/A0.050% 2/6/2025 Raymond James Financial Inc.12,549$124K0.0%N/A0.022% 2/6/2025 Charles Schwab Investment Management Inc.475,526$4.70M0.0%-2.0%0.821% 2/5/2025 US Bancorp DE8,205$81K0.0%N/A0.014% 2/4/2025 Bank of New York Mellon Corp147,741$1.46M0.0%-3.2%0.255% 1/31/2025 New York State Common Retirement Fund17,313$171K0.0%+245.4%0.030% 1/30/2025 Blue Trust Inc.3,090$31K0.0%-38.2%0.005% 1/24/2025 China Universal Asset Management Co. Ltd.12,287$121K0.0%N/A0.021% 1/23/2025 Stordahl Capital Management Inc.40,000$395K0.1%N/A0.069% 1/21/2025 Brighton Jones LLC27,589$273K0.0%-18.0%0.048% 1/17/2025 Seros Financial LLC16,115$159K0.1%N/A0.028% 1/17/2025 SG Americas Securities LLC24,361$241K0.0%+21.2%0.042% 11/19/2024 Barclays PLC94,640$376K0.0%+121.3%0.163% 11/16/2024 Geode Capital Management LLC1,339,251$5.32M0.0%+0.5%2.311% 11/15/2024 Barclays PLC94,640$376K0.0%+121.3%0.163% 11/15/2024 MML Investors Services LLC18,600$74K0.0%+19.2%0.032% 11/15/2024 Jane Street Group LLC58,277$231K0.0%+15.9%0.101% 11/15/2024 Wellington Management Group LLP76,945$305K0.0%N/A0.133% 11/15/2024 State Street Corp1,226,053$4.87M0.0%+0.3%2.116% 11/15/2024 Stifel Financial Corp1,904,207$7.56M0.0%+0.1%3.286% 11/15/2024 HighTower Advisors LLC59,339$235K0.0%+7.2%0.102% 11/13/2024 Townsquare Capital LLC12,383$49K0.0%-34.3%0.021% 11/13/2024 BNP Paribas Financial Markets12,388$49K0.0%+130.6%0.021% 11/12/2024 Charles Schwab Investment Management Inc.485,035$1.93M0.0%+4.0%0.837% 11/6/2024 Oppenheimer & Co. Inc.18,602$74K0.0%-70.2%0.032% Is President Trump Lying To You With This? (Ad)President Trump’s economic transition isn’t without hardship. But what if there were a smart, tax-free way to protect your 401(k), IRA, or pension from market chaos and currency collapse? The 2025 Wealth Protection Guide reveals a legal IRS strategy that may let you keep more of your retirement—regardless of what happens next. Trump’s warning was real. So is this opportunity.Protect your IRA—Trump’s warning was real10/16/2024 SPC Financial Inc.19,400$77K0.0%N/A0.033% 10/3/2024 SG Americas Securities LLC20,104$80K0.0%N/A0.035% 8/19/2024B. Riley Wealth Advisors Inc.11,305$46K0.0%-26.5%0.020% 8/15/2024 The Manufacturers Life Insurance Company22,433$91K0.0%-10.8%0.039% 8/15/2024 AQR Capital Management LLC25,800$105K0.0%N/A0.045% 8/12/2024 Hsbc Holdings PLC10,427$41K0.0%-29.2%0.018% 8/1/2024 Rhumbline Advisers111,778$454K0.0%+6.1%0.193% 7/26/2024 Bank of New York Mellon Corp218,580$887K0.0%+16.6%0.377% 7/25/2024 Cypress Capital Group35,000$142K0.0%+40.0%0.060% 5/20/2024 Virtu Financial LLC10,091$35K0.0%-65.3%0.017% (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, 86 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), Corient Private Wealth LLC ($7.25M), Nomura Holdings Inc. ($5.58M), Geode Capital Management LLC ($5.32M), State Street Corp ($4.87M), and Charles Schwab Investment Management Inc. ($3.81M).Learn more on OMER's 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 67 institutional investors that purchased Omeros stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Bank of Montreal Can ($563.30K), Nomura Holdings Inc. ($430.93K), Susquehanna Fundamental Investments LLC ($306.51K), Wellington Management Group LLP ($212.95K), Vanguard Group Inc. ($176.95K), 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 3,289,571 shares in the last 24 months. This purchase volume represents approximately $23.64M in transactions. Which Omeros major shareholders have been selling company stock? Of the 39 institutional investors that sold Omeros stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Stifel Financial Corp ($489.16K), Nomura Holdings Inc. ($306.28K), Vanguard Group Inc. ($117.94K), Connor Clark & Lunn Investment Management Ltd. ($102.77K), Ancora Advisors LLC ($80K), Corient Private Wealth LLC ($76.25K), and Barclays PLC ($50.23K). How much institutional selling is happening at Omeros? Institutional investors have sold a total of 1,664,510 shares in the last 24 months. This volume of shares sold represents approximately $11.25M in transactions. 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