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DaveManuel.com · Institutional Ownership · Who Owns It

OMEROS CORP (OMER)

Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.

175
Reporting holders
$399.3M
Reported value
50.1%
Of shares outstanding
5.1%
Calls
8.5%
Puts
+14
Holder change

Institutions report 36,269,686 shares against 72,388,316 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.

Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.

Holders

Download these holders as CSV

FilerValueShares Their book Held Change
BlackRock, Inc.$57.5M6,044,6330.00%8q+13.8%+$7.0M
INGALLS & SNYDER LLC$34.8M3,659,5230.95%31q+2.8%+$951.9K
UBS Group AG$29.9M3,148,3840.00%31q+34.5%+$7.7M
VANGUARD CAPITAL MANAGEMENT LLC$29.2M3,072,0500.00%2q+3.0%+$844.4K
STATE STREET CORP$22.1M2,319,9060.00%31q+20.9%+$3.8M
SUSQUEHANNA INTERNATIONAL GROUP, LLP$21.1M
incl. $18.0M options CALL+PUT
325,1940.00%31q-33.0%-$10.4M
GEODE CAPITAL MANAGEMENT, LLC$18.2M1,914,4600.00%31q+9.3%+$1.5M
STIFEL FINANCIAL CORP$17.5M1,836,9250.01%31qHELD
Affinity Asset Advisors, LLC$13.4M PUToptions only0.61%newOPTIONS
VANGUARD PORTFOLIO MANAGEMENT LLC$9.2M962,8280.00%2q+34.0%+$2.3M
CITADEL ADVISORS LLC$7.9M
incl. $7.1M options CALL+PUT
85,5940.00%31q-67.1%-$16.1M
Invesco Ltd.$7.1M751,7710.00%13q+316.2%+$5.4M
NORTHERN TRUST CORP$6.9M727,3480.00%31q+29.0%+$1.6M
Rock Springs Capital Management LP$6.8M718,4990.33%newNEW
Corient Private Wealth LP$6.3M659,7300.01%15q-17.7%-$1.3M
Rubric Capital Management LP$6.2M656,8740.06%newNEW
Caption Management, LLC$5.8M
incl. $4.6M options CALL+PUT
130,0000.03%newNEW
CHARLES SCHWAB INVESTMENT MANAGEMENT INC$5.8M604,6330.00%31q+3.8%+$210.4K
BANK OF MONTREAL /CAN/$5.4M568,4240.00%31qHELD
VANGUARD FIDUCIARY TRUST CO$4.7M491,1730.00%2qHELD
FEDERATED HERMES, INC.$4.5M478,2900.01%newNEW
Clutterbuck Capital Management LLC$4.3M450,0002.43%3q+50.0%+$1.4M
TWO SIGMA INVESTMENTS, LP$3.8M402,6620.00%22q+40.6%+$1.1M
MORGAN STANLEY$3.8M394,4590.00%35q+24.1%+$728.2K
JANE STREET GROUP, LLC$3.3M
incl. $3.1M options CALL+PUT
20,1660.00%12q-86.1%-$20.4M
GROUP ONE TRADING LLC$3.3M
incl. $2.7M options CALL+PUT
58,6970.00%31q+52.0%+$1.1M
MILLENNIUM MANAGEMENT LLC$3.3M343,8390.00%11q-16.3%-$635.0K
Badgley Phelps Wealth Managers, LLC$2.5M263,5560.04%13qHELD
SIMPLEX TRADING, LLC$2.2M
incl. $2.2M options CALL+PUT
8,8590.00%31q-76.4%-$7.3M
WELLINGTON MANAGEMENT GROUP LLP$1.9M204,5410.00%6q+9.2%+$164.0K
Bank of New York Mellon Corp$1.9M195,9900.00%31q+17.9%+$282.9K
BANK OF AMERICA CORP /DE/$1.8M194,1400.00%31q-5.2%-$101.4K
Cambridge Investment Research Advisors, Inc.$1.8M184,8060.00%31q+108.7%+$915.5K
Nuveen, LLC$1.6M169,9520.00%6q+10.2%+$149.8K
Ancora Advisors LLC$1.6M168,7500.03%21q+46.7%+$511.2K
GOLDMAN SACHS GROUP INC$1.5M157,0080.00%31q-22.6%-$436.4K
WELLS FARGO & COMPANY/MN$1.5M156,8890.00%31q+32.6%+$366.6K
LMR Partners LLP$1.4M PUToptions only0.01%2qOPTIONS
Swiss National Bank$1.3M137,3000.00%newNEW
Virtus Investment Advisers, LLC$1.3M133,1290.29%3q+395.5%+$1.0M
PRICE T ROWE ASSOCIATES INC /MD/$1.2M129,5500.00%30q+20.7%+$211.8K
HRT FINANCIAL LP$1.1M
incl. $1.1M options OPT
118,7000.00%newNEW
MML INVESTORS SERVICES, LLC$1.1M118,1750.00%9q+104.9%+$575.4K
AMERIPRISE FINANCIAL INC$1.1M117,4560.00%16qHELD
HighTower Advisors, LLC$1.1M115,3680.00%31q+4.3%+$45.1K
RHUMBLINE ADVISERS$1.0M110,2710.00%13q+7.2%+$70.9K
PEAK6 LLC$951.0K CALLoptions only0.00%newOPTIONS
Brevan Howard Capital Management LP$932.4K98,0470.01%5q+91.6%+$445.9K
Walleye Capital LLC$900.4K
incl. $896.8K options CALL+PUT
3740.00%6q-98.9%-$82.2M
COLDSTREAM CAPITAL MANAGEMENT INC$805.9K84,7430.01%18q+56.6%+$291.1K
Quantinno Capital Management LP$796.8K83,7860.00%4q+36.1%+$211.5K
Balyasny Asset Management L.P.$794.6K83,5580.00%2q+187.3%+$518.1K
JUPITER ASSET MANAGEMENT LTD$724.5K76,1860.00%newNEW
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM$720.2K75,7300.00%13q+1918.4%+$684.5K
DEUTSCHE BANK AG\$713.8K75,0530.00%34q+36.4%+$190.4K
ALLIANCEBERNSTEIN L.P.$707.4K66,9900.00%13qHELD
CITIGROUP INC$692.6K72,8290.00%31q+136.5%+$399.8K
MINDSET WEALTH MANAGEMENT, LLC$671.4K70,6000.13%8q+18.7%+$105.6K
AMERICAN FINANCIAL GROUP INC$609.7K64,1130.21%31qHELD
STATE OF WISCONSIN INVESTMENT BOARD$573.8K60,3390.00%2q+411.4%+$461.6K
Vanguard Global Advisers, LLC$532.7K56,0190.00%2q+36.2%+$141.7K
Squarepoint Ops LLC$523.3K55,0300.00%newNEW
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$507.5K53,3620.00%3q+9655.4%+$502.3K
VANGUARD ASSET MANAGEMENT, Ltd$454.3K47,7690.00%newNEW
BARCLAYS PLC$448.5K47,1570.00%31q+5.0%+$21.3K
NFSG Corp$439.5K46,2100.05%5q-3.1%-$14.3K
Headlands Technologies LLC$431.8K45,4010.05%2q-9.1%-$43.0K
Legal & General Group Plc$425.0K44,6860.00%13q+636.4%+$367.3K
JPMORGAN CHASE & CO$418.7K42,2470.00%31q+1.3%+$5.2K
MetLife Investment Management, LLC$413.8K43,5100.00%13q+12.6%+$46.4K
Zurcher Kantonalbank (Zurich Cantonalbank)$407.4K42,8410.00%6q+5302.4%+$399.9K
PRUDENTIAL FINANCIAL INC$403.1K42,3850.00%2q+228.4%+$280.4K
Susquehanna Portfolio Strategies, LLC$397.1K41,7550.01%5q-55.0%-$485.0K
INTERNATIONAL ASSETS INVESTMENT MANAGEMENT, LLC$380.2K40,4000.02%5q+596.6%+$325.6K
FIFTH THIRD BANCORP$370.9K39,0000.00%29qHELD
OPTIMIZE FINANCIAL INC.$364.0K38,2740.13%2qHELD
Sound Capital Solutions LLC$364.0K38,2740.09%newFIRST
Cerity Partners LLC$353.7K37,1880.00%11q+17.7%+$53.3K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.$315.9K33,2170.00%9q+4.8%+$14.4K
LPL Financial LLC$314.1K33,0330.00%2q+68.5%+$127.7K
Diametric Capital, LP$313.9K33,0100.03%2q+12.6%+$35.1K
COMPASS FINANCIAL MANAGEMENT LLC$312.1K32,8150.04%newFIRST
Focus Partners Wealth$301.7K31,7230.00%3q-33.3%-$150.8K
BRIGHTON JONES LLC$300.5K31,5970.01%2q-0.9%-$2.7K
Avantax Planning Partners, Inc.$295.8K31,1000.01%5q+47.4%+$95.1K
Jupiter Topco LLC$290.2K30,5000.00%newFIRST
Russell Investments Group, Ltd.$288.0K30,2820.00%9q+116.3%+$154.9K
AQR CAPITAL MANAGEMENT LLC$282.7K29,7260.00%9q-1.5%-$4.3K
BRIDGEWAY CAPITAL MANAGEMENT, LLC$256.8K27,0000.00%16qHELD
Merit Financial Group, LLC$255.2K26,8400.00%2q-0.6%-$1.5K
PROFUND ADVISORS LLC$250.3K26,3190.01%3q+27.5%+$53.9K
Atom Investors LP$227.7K23,9450.02%newNEW
Creative Planning$221.4K23,2820.00%3q+10.6%+$21.3K
AXQ CAPITAL, LP$221.1K23,2460.02%3q-40.1%-$148.1K
HARBOUR INVESTMENTS, INC.$220.1K23,1390.00%8q+5.1%+$10.6K
Stordahl Capital Management, Inc.$217.4K22,8600.04%7qHELD
State of New Jersey Common Pension Fund D$210.3K22,1150.00%newNEW
INTECH INVESTMENT MANAGEMENT LLC$208.0K21,8690.00%7q+19.7%+$34.2K
NEW YORK STATE COMMON RETIREMENT FUND$197.0K20,7130.00%13qHELD
DeepCurrents Investment Group LLC$189.9K19,9710.01%2q+64.6%+$74.6K

Showing the largest 100 of 175 reported holders.

What the company announced

Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.

FiledEvent dateWhatSource
2026-10-302026-10-28Directors or officers departed or appointedfiling
2026-08-132026-08-12Directors or officers departed or appointedfiling

What the insiders did

Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.

Officers and directors

DateInsiderRoleSideSharesValue
2026-08-28Cancelmo Peter BVP, General CounselSold25,000$466.1K
2026-08-31Cancelmo Peter BVP, General CounselSold25,000$463.5K
2026-08-20Cable Thomas J.DirectorSold15,000$276.8K
2026-09-22Borges David J.VP, Finance & CAOSold10,000$209.5K
2026-09-23Borges David J.VP, Finance & CAOSold10,000$209.5K
2026-08-21Borges David J.VP, Finance & CAOSold10,000$189.5K
2026-08-27HANISH ARNOLD CDirectorSold10,000$189.5K ×2

Quarter by quarter

Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.

QuarterHoldersValue SharesNewAdded TrimmedOptions
Q3 202635$12.8M653,17481060.0%
Q2 2026175$399.3M36,269,68636653713.9%
Q1 2026161$347.9M30,846,1583161406.2%
Q4 2025157$723.7M33,917,42234593219.6%
Q3 2025139$157.7M33,266,77017553113.5%
Q2 2025132$93.5M29,610,5141639365.0%
Q1 2025141$237.3M27,593,9422233484.4%
Q4 2024133$286.6M26,557,4602647288.5%
Q3 2024109$104.7M25,052,8601424325.0%
Q2 2024105$106.1M24,976,6201522314.4%
Q1 2024100$92.8M25,900,4311326323.7%
Q4 2023100$84.4M25,258,3001127281.9%
Q3 2023105$82.3M26,962,5051228224.1%
Q2 2023107$153.3M26,219,3833424216.8%
Q1 202392$98.4M20,415,0641227253.5%
Q4 2022100$47.1M19,536,2821327275.6%
Q3 202296$70.8M20,472,0231322328.6%
Q2 2022103$74.2M23,974,7761930288.7%
Q1 2022131$212.2M32,832,2421827456.9%
Q4 2021140$352.5M50,459,4362444416.4%
Q3 2021143$782.4M52,226,7191048418.2%
Q2 2021152$855.8M52,819,8222156368.4%
Q1 2021151$1.0B52,906,4403336487.7%
Q4 2020137$895.8M58,866,2871743386.0%
Q3 2020134$602.3M56,708,8093156234.8%
Q2 2020120$743.6M49,951,1812045291.2%
Q1 2020123$963.9M71,061,7712346261.5%
Q4 2019127$626.9M42,530,4291945274.4%
Q3 2019113$711.2M42,050,2391737273.5%
Q2 2019111$717.3M43,701,9611239354.4%
Q1 2019120$769.8M42,957,3961433343.2%
Q4 2018120$492.8M42,815,6712533.2%