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Omeros (OMER) Institutional Ownership

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$18.98 +0.12 (+0.64%)
As of 02:40 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)
78
Total
Institutional Inflows
(last 12 months)
$160.39M
Number of
Institutional Sellers
(last 12 months)
25
Total
Institutional Outflows
(last 12 months)
$11.02M
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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
8/27/2026 Corient Private Wealth LP659,730$6.27M0.0%-17.7%0.911%
8/26/2026 HighTower Advisors LLC115,368$1.10M0.0%+4.3%0.159%
8/25/2026 VIRGINIA RETIREMENT SYSTEMS ET Al15,400$146K0.0%N/A0.021%
8/24/2026 California State Teachers Retirement System720,192$75.73M0.0%+19,094.9%0.995%
8/22/2026 Compass Financial Management LLC32,815$312K0.0%N/A0.045%
8/21/2026 AXQ Capital LP23,246$221K0.0%-40.1%0.032%
8/20/2026 Headlands Technologies LLC45,401$432K0.0%-9.1%0.063%
8/20/2026 Ancora Advisors LLC168,750$1.61M0.0%+46.7%0.233%
8/20/2026 Two Sigma Securities LLC15,939$152K0.0%N/A0.022%
8/19/2026 UBS AM a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC53,362$507K0.0%+9,655.4%0.074%
8/19/2026 Wellington Management Group LLP204,541$1.95M0.0%+9.2%0.283%
8/17/2026 Corient Private Wealth LP659,730$6.27M0.0%N/A0.911%
8/17/2026 Bank of America Corp DE194,140$1.85M0.0%N/A0.268%
8/15/2026 Jupiter Topco LLC30,500$290K0.0%N/A0.042%
8/14/2026 Ancora Advisors LLC168,750$1.61M0.0%N/A0.233%
8/14/2026 Legal & General Group Plc44,686$425K0.0%N/A0.062%
8/14/2026 The Manufacturers Life Insurance Company 18,965$180K0.0%N/A0.026%
8/12/2026 Compass Financial Management LLC32,815$312K0.0%N/A0.045%
8/7/2026 BlackRock Inc.6,044,633$57.48M0.0%N/A8.351%
8/7/2026 Deutsche Bank AG75,053$714K0.0%N/A0.104%
8/6/2026 Bank of New York Mellon Corp195,990$1.86M0.0%N/A0.271%
7/30/2026 Pictet Asset Management Holding SA18,029$171K0.0%N/A0.025%
7/29/2026 Avantax Planning Partners Inc.31,100$296K0.0%+47.4%0.043%
7/27/2026 Cambridge Investment Research Advisors Inc.92,403$879K0.0%+4.3%0.128%
5/19/2026 Bank of America Corp DE204,805$2.16M0.0%+57.8%0.283%
5/16/2026 The Manufacturers Life Insurance Company18,454$195K0.0%-7.0%0.025%
5/16/2026 Quantinno Capital Management LP61,541$650K0.0%+145.4%0.085%
5/16/2026 Polar Asset Management Partners Inc.200,000$2.11M0.0%-25.6%0.276%
5/14/2026 Sei Investments Co.13,171$139K0.0%-58.5%0.018%
5/7/2026 Dimensional Fund Advisors LP179,594$1.90M0.0%+85.2%0.249%
5/6/2026 Assetmark Inc.3,600$38K0.0%N/A0.005%
5/5/2026 NFSG Corp47,710$504K0.1%+39.1%0.066%
5/5/2026 Avantax Planning Partners Inc.21,100$223K0.0%+59.8%0.029%
5/2/2026 International Assets Investment Management LLC5,800$61K0.0%+16.0%0.008%
5/1/2026 Fifth Third Bancorp39,000$412K0.0%+3,800.0%0.054%
4/27/2026 Leonteq Securities AG10,000$106K0.0%N/A0.014%
3/9/2026 Corient Private Wealth LLC688,025$11.82M0.0%+13.0%0.970%
3/3/2026 Caitong International Asset Management Co. Ltd9,276$159K0.0%N/A0.013%
2/19/2026 Invesco Ltd.154,782$2.66M0.0%+26.8%0.218%
2/19/2026 Corient Private Wealth LLC687,325$11.81M0.0%+12.9%0.969%
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2/18/2026 Virtus Investment Advisers LLC26,212$450K0.1%N/A0.037%
2/18/2026 Wellington Management Group LLP202,617$3.48M0.0%+4.2%0.286%
2/18/2026 Susquehanna Portfolio Strategies LLC92,759$1.59M0.0%-45.8%0.131%
2/18/2026 Millennium Management LLC441,811$7.59M0.0%+10.0%0.623%
2/18/2026 Man Group plc27,099$465K0.0%N/A0.038%
2/18/2026 Engineers Gate Manager LP20,082$345K0.0%N/A0.028%
2/17/2026 Schonfeld Strategic Advisors LLC12,667$218K0.0%N/A0.018%
2/17/2026 AQR Capital Management LLC22,838$392K0.0%+7.2%0.032%
2/17/2026 Abel Hall LLC10,240$176K0.0%N/A0.014%
2/17/2026 Jump Financial LLC228,000$3.92M0.0%N/A0.322%
2/17/2026 Farallon Capital Management LLC23,000$395K0.0%N/A0.032%
2/17/2026 Price T Rowe Associates Inc. MD95,745$1.64M0.0%+6.9%0.135%
2/17/2026 Osaic Holdings Inc.7,547$130K0.0%+34.6%0.011%
2/17/2026 Russell Investments Group Ltd.14,014$241K0.0%+31.0%0.020%
2/17/2026 Graham Capital Management L.P.13,222$227K0.0%-61.6%0.019%
2/16/2026 Verition Fund Management LLC63,493$1.09M0.0%N/A0.090%
2/16/2026 MML Investors Services LLC77,875$1.34M0.0%+31.6%0.110%
2/16/2026 Arax Advisory Partners5,255$90K0.0%+56.4%0.007%
2/16/2026 Barclays PLC120,490$2.07M0.0%-8.7%0.170%
2/13/2026 Stifel Financial Corp1,809,766$31.08M0.0%-0.1%2.553%
2/13/2026 Rafferty Asset Management LLC12,226$210K0.0%N/A0.017%
2/13/2026 Itau Unibanco Holding S.A.180,000$3.05M0.1%N/A0.254%
2/13/2026 Charles Schwab Investment Management Inc.593,222$10.19M0.0%+7.2%0.837%
2/13/2026 State Street Corp1,573,526$27.03M0.0%+26.9%2.219%
2/13/2026 Caitong International Asset Management Co. Ltd1,933$33K0.1%N/A0.003%
2/12/2026 MetLife Investment Management LLC36,200$622K0.0%+76.6%0.051%
2/12/2026 Dimensional Fund Advisors LP96,948$1.67M0.0%N/A0.137%
2/12/2026 Mindset Wealth Management LLC52,000$893K0.2%-13.3%0.073%
2/12/2026 Informed Momentum Co LLC207,480$3.56M0.4%N/A0.293%
2/12/2026 New York State Common Retirement Fund20,713$356K0.0%+81.5%0.029%
2/12/2026 Nuveen LLC153,187$2.63M0.0%+74.8%0.216%
2/11/2026 Deutsche Bank AG48,694$837K0.0%+19.3%0.069%
2/11/2026 Cerity Partners LLC30,450$523K0.0%+6.1%0.043%
2/11/2026 Los Angeles Capital Management LLC30,920$531K0.0%N/A0.044%
2/11/2026 State of Wyoming1,433$25K0.0%N/A0.002%
2/10/2026 Goldman Sachs Group Inc.227,294$3.90M0.0%-32.4%0.321%
2/10/2026 AXQ Capital LP29,151$501K0.1%N/A0.041%
2/10/2026 Intech Investment Management LLC29,967$515K0.0%+16.9%0.042%
2/9/2026 Geode Capital Management LLC1,631,350$28.03M0.0%+6.3%2.301%
2/9/2026 AlphaQuest LLC82,597$1.42M0.1%+8,259,600.0%0.116%
2/9/2026 Harbour Investments Inc.21,835$375K0.0%+62.1%0.031%
2/9/2026 Coldstream Capital Management Inc.53,605$921K0.0%+107.5%0.076%
2/6/2026 ProShare Advisors LLC15,171$261K0.0%+12.1%0.021%
2/6/2026 HighTower Advisors LLC104,059$1.79M0.0%+9.3%0.147%
2/5/2026 AlphaCore Capital LLC17,647$303K0.0%N/A0.025%
2/5/2026 Avantax Planning Partners Inc.13,200$227K0.0%+30.7%0.019%
2/3/2026 International Assets Investment Management LLC5,000$86K0.0%-67.8%0.007%
1/29/2026Comerica Bank38,000$653K0.0%+8.6%0.054%
1/29/2026 UBS Group AG2,222,982$38.18M0.0%+213.5%3.135%
1/29/2026Vanguard Group Inc.4,013,315$68.93M0.0%+19.9%5.661%
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1/29/2026 China Universal Asset Management Co. Ltd.16,553$284K0.0%-24.5%0.023%
1/23/2026 Farther Finance Advisors LLC7,106$122K0.0%+16.5%0.010%
1/21/2026 Newbridge Financial Services Group Inc.34,310$589K0.1%-74.5%0.048%
1/16/2026 Empirical Financial Services LLC d.b.a. Empirical Wealth Management10,500$180K0.0%-74.1%0.015%
1/9/2026 SG Americas Securities LLC18,825$323K0.0%-58.5%0.027%
1/8/2026 Wealth Enhancement Advisory Services LLC31,728$545K0.0%+9.0%0.045%
1/1/2026 JPMorgan Chase & Co.416,153$1.71M0.0%+1,201.1%0.587%
11/17/2025 Nomura Holdings Inc.43,681$179K0.0%-50.6%0.064%
11/17/2025 Millennium Management LLC401,814$1.65M0.0%+49.1%0.590%
11/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.30,186$124K0.0%-5.2%0.044%


OMER Institutional Ownership - Frequently Asked Questions

During the previous two years, 128 institutional investors and hedge funds held shares of Omeros. The most heavily invested institutionals were California State Teachers Retirement System ($75.73M), Vanguard Group Inc. ($68.93M), BlackRock Inc. ($57.48M), UBS Group AG ($38.18M), Stifel Financial Corp ($31.08M), Geode Capital Management LLC ($28.03M), and State Street Corp ($27.03M).Learn more on Omeros' institutional investors.

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

Of the 114 institutional investors that purchased Omeros' stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: BlackRock Inc. ($6.04M), UBS Group AG ($1.51M), Vanguard Group Inc. ($825.34K), JPMorgan Chase & Co. ($776.00K), California State Teachers Retirement System ($716.44K), Corient Private Wealth LP ($659.73K), and Nomura Holdings Inc. ($430.93K).

Institutional investors have bought a total of 14,333,182 shares in the last 24 months. This purchase volume represents approximately $160.39M in transactions.

Of the 25 institutional investors that sold Omeros' stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Corient Private Wealth LLC ($189.81K), UBS Group AG ($159.41K), Corient Private Wealth LP ($141.68K), Goldman Sachs Group Inc. ($108.79K), Newbridge Financial Services Group Inc. ($100.20K), Susquehanna Portfolio Strategies LLC ($78.33K), and Polar Asset Management Partners Inc. ($68.80K).

Institutional investors have sold a total of 1,100,285 shares in the last 24 months. This volume of shares sold represents approximately $11.02M in transactions.


Related Companies

Institutional ownership data for NASDAQ:OMER is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/27/2026. New 13F filings are added each quarter as they're published.
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