Vault-13

OMEROS CORP OMER

COM · Common Stock · CUSIP 682143102 · ISIN US6821431029

Company in Seattle, United States

94 institutional holders
20,449,10920.4m shares reported held*
32.6% of all shares outstanding*
$64.6mreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once ($63.0k this quarter). Holder counts are more reliable. Shares outstanding: 62.7m as of 2022-11-04, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $3.16. Options: 8 managers hold calls ($2.2m notional), 6 hold puts ($3.0m).

Biggest calls

GROUP ONE TRADING LLC — $1.0m322.4k shares
CITADEL ADVISORS LLC — $601.0k190.7k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $425.0k134.8k shares
SIMPLEX TRADING, LLC — $145.0k46.3k shares
JANE STREET GROUP, LLC — $35.0k11.2k shares
Ancora Advisors LLC — $19.0k425 shares
HAP Trading, LLC — $3.0k28.3k shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Biggest puts

Jefferies Group LLC — $698.4k221.7k shares
SUSQUEHANNA INTERNATIONAL GROUP, LLP — $613.0k194.5k shares
CITADEL ADVISORS LLC — $523.0k166.0k shares
WOLVERINE ASSET MANAGEMENT LLC — $427.0k135.6k shares
DeepCurrents Investment Group LLC — $383.0k1.2k shares
Verition Fund Management LLC — $306.0k97.2k shares

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
BlackRock, Inc. 13G · institution filed 2026-07-29 8.2% 6.0m≈ $56.7m 2026-07-29

Fell to 5% or below in the last year: INGALLS & SNYDER LLC (4.8%, 2026-04-23), VANGUARD GROUP INC (0.0%, 2026-03-27)

Insider purchases and sales in Q3 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported in Q3 2022.

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 INGALLS & SNYDER LLC 0.73% of their portfolio NEW YORK, NY 4,091,6044.1m $12.9m $12.9m 0.73% —
2 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 2,819,1642.8m $8.9m $8.9m 0.00% —
3 D. E. Shaw & Co., Inc. 0.01% of their portfolio New York, NY 2,010,3252.0m $6.3m $6.3m 0.01% —
4 STIFEL FINANCIAL CORP 0.01% of their portfolio ST. LOUIS, MO 1,382,7041.4m $4.4m $4.4m 0.01% —
5 BlackRock Inc. 0.00% of their portfolio New York, NY 1,140,2731.1m $3.6m $3.6m 0.00% —
6 CPWM, LLC 0.21% of their portfolio Seattle, WA 716,886716.9k $2.3m $2.3m 0.21% —
7 UBS Group AG 0.00% of their portfolio ZURICH, V8 652,743652.7k $2.1m $2.1m 0.00% —
8 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 598,549598.5k $1.9m $1.9m 0.00% —
9 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 587,717587.7k $1.9m $1.9m 0.00% —
10 NOMURA HOLDINGS INC 0.02% of their portfolio TOKYO, M0 564,698564.7k $1.8m $1.8m 0.02% —
11 BANK OF MONTREAL /CAN/ 0.00% of their portfolio TORONTO, A6 563,095563.1k $1.9m $1.9m 0.00% —
12 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 505,392505.4k $1.6m $1.6m 0.00% —
13 WELLINGTON MANAGEMENT GROUP LLP 0.00% of their portfolio Boston, MA 379,632379.6k $1.2m $1.2m 0.00% —
14 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 370,424370.4k $1.2m $1.2m 0.00% —
15 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 308,239308.2k $971.0k $971.0k 0.00% —
16 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 278,674278.7k $878.0k $878.0k 0.00% —
17 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 239,500239.5k $754.0k $754.0k 0.00% —
18 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 210,683210.7k $663.0k $663.0k 0.00% —
19 Cubist Systematic Strategies, LLC 0.00% of their portfolio STAMFORD, CT 204,122204.1k $643.0k $643.0k 0.00% —
20 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 168,653168.7k $531.0k $531.0k 0.00% —
21 TUDOR INVESTMENT CORP ET AL 0.01% of their portfolio STAMFORD, CT 156,652156.7k $493.0k $493.0k 0.01% —
22 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 150,995151.0k $475.0k $475.0k 0.00% —
23 Ancora Advisors LLC 0.01% of their portfolio Cleveland, OH 145,722145.7k $459.0k $459.0k 0.01% —
24 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 121,943121.9k $385.0k $385.0k 0.00% —
25 AMERIPRISE FINANCIAL INC 0.00% of their portfolio MINNEAPOLIS, MN 120,166120.2k $379.0k $379.0k 0.00% —
26 UNITED CAPITAL FINANCIAL ADVISORS, LLC 0.00% of their portfolio IRVING, TX 104,293104.3k $329.0k $329.0k 0.00% —
27 RAYMOND JAMES & ASSOCIATES 0.00% of their portfolio ST PETERSBURG, FL 103,518103.5k $326.0k $326.0k 0.00% —
28 BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.01% of their portfolio HOUSTON, TX 100,000100.0k $315.0k $315.0k 0.01% —
29 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 98,19698.2k $309.0k $309.0k 0.00% —
30 JACOB ASSET MANAGEMENT OF NEW YORK LLC 0.30% of their portfolio HERMOSA BEACH, CA 87,92887.9k $277.0k $277.0k 0.30% —
31 WOLVERINE ASSET MANAGEMENT LLC 0.00% of their portfolio CHICAGO, IL 84,41284.4k $265.0k $265.0k 0.00% —
32 Schonfeld Strategic Advisors LLC 0.00% of their portfolio NEW YORK, NY 82,10082.1k $258.0k $258.0k 0.00% —
33 OCCUDO QUANTITATIVE STRATEGIES LP 0.02% of their portfolio FORT LAUDERDALE, FL 74,10074.1k $233.0k $233.0k 0.02% —
34 AMERICAN FINANCIAL GROUP INC 0.07% of their portfolio CINCINNATI, OH 64,11364.1k $202.0k $202.0k 0.07% —
35 Caprock Group, LLC 0.02% of their portfolio BOISE, ID 60,81260.8k $192.0k $192.0k 0.02% —
36 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 59,96960.0k $189.0k $189.0k 0.00% —
37 Sheaff Brock Investment Advisors, LLC 0.02% of their portfolio INDIANAPOLIS, IN 57,58057.6k $181.0k $181.0k 0.02% —
38 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 55,90255.9k $176.0k $176.0k 0.00% —
39 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 55,48855.5k $175.0k $175.0k 0.00% —
40 Belvedere Trading LLC 0.21% of their portfolio CHICAGO, IL 54,13654.1k $191.0k $191.0k 0.21% —
41 BRIGHTON JONES LLC 0.01% of their portfolio SEATTLE, WA 53,54053.5k $169.0k $169.0k 0.01% —
42 HighTower Advisors, LLC 0.00% of their portfolio CHICAGO, IL 52,78952.8k $167.0k $167.0k 0.00% —
43 CORNERCAP INVESTMENT COUNSEL INC 0.03% of their portfolio Atlanta, GA 47,83647.8k $151.0k $151.0k 0.03% —
44 Qube Research & Technologies Ltd 0.00% of their portfolio LONDON, X0 45,91345.9k $145.0k $145.0k 0.00% —
45 Cypress Capital Group 0.02% of their portfolio Palm Beach, FL 45,00045.0k $142.0k $142.0k 0.02% —
46 HOHIMER WEALTH MANAGEMENT, LLC 0.04% of their portfolio SEATTLE, WA 39,28039.3k $124.0k $124.0k 0.04% —
47 Cambridge Investment Research Advisors, Inc. 0.00% of their portfolio FAIRFIELD, IA 37,48737.5k $118.0k $118.0k 0.00% —
48 SRH ADVISORS, LLC 0.15% of their portfolio SALINA, KS 36,25536.3k $114.0k $114.0k 0.15% —
49 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 35,26135.3k $111.0k $111.0k 0.00% —
50 Cerity Partners LLC 0.00% of their portfolio NEW YORK, NY 32,35032.4k $102.0k $102.0k 0.00% —
51 NATIONAL BANK OF CANADA /FI/ 0.00% of their portfolio MONTREAL, A8 31,70031.7k $100.0k $100.0k 0.00% —
52 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 29,87229.9k $94.0k $94.0k 0.00% —
53 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 27,95027.9k $88.0k $88.0k 0.00% —
54 Baird Financial Group, Inc. 0.00% of their portfolio MILWAUKEE, WI 26,75026.8k $84.0k $84.0k 0.00% —
55 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 22,70322.7k $72.0k $72.0k 0.00% —
56 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 19,89319.9k $63.0k $63.0k 0.00% —
57 MAI Capital Management 0.00% of their portfolio INDEPENDENCE, OH 18,40018.4k $58.0k $58.0k 0.00% —
58 Lesa Sroufe & Co 0.07% of their portfolio SEATTLE, WA 17,73517.7k $56.0k $56.0k 0.07% —
59 PRICE T ROWE ASSOCIATES INC /MD/ 0.00% of their portfolio BALTIMORE, MD 17,60017.6k $56.0k $56.0k 0.00% —
60 B. Riley Wealth Advisors, Inc. 0.00% of their portfolio MEMPHIS, TN 15,38015.4k $49.0k $49.0k 0.00% —
61 CALTON & ASSOCIATES, INC. 0.03% of their portfolio Tampa, FL 14,74114.7k $46.0k $46.0k 0.03% —
62 Man Group plc 0.00% of their portfolio LONDON, X0 14,45314.5k $45.0k $45.0k 0.00% —
63 Apella Capital, LLC 0.01% of their portfolio WEST HARTFORD, CT 14,28814.3k $45.0k $45.0k 0.01% —
64 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 14,19414.2k $45.0k $45.0k 0.00% —
65 Aquatic Capital Management LLC 0.00% of their portfolio CHICAGO, IL 14,10014.1k $44.0k $44.0k 0.00% —
66 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 12,67012.7k $40.0k $40.0k 0.00% —
67 Creative Planning 0.00% of their portfolio OVERLAND PARK, KS 11,27011.3k $36.0k $36.0k 0.00% —
68 DDD Partners, LLC 0.01% of their portfolio BELLEVUE, WA 11,13111.1k $35.0k $35.0k 0.01% —
69 Sonora Investment Management Group, LLC 0.00% of their portfolio TUCSON, AZ 10,37510.4k $29.0k $29.0k 0.00% —
70 Empirical Financial Services, LLC d.b.a. Empirical Wealth Management 0.00% of their portfolio Seattle, WA 10,00010.0k $32.0k $32.0k 0.00% —
71 Empire Life Investments Inc. 0.00% of their portfolio Toronto, A6 8,5358.5k $27.0k $27.0k 0.00% —
72 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 8,0178.0k $24.0k $24.0k 0.00% —
73 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 6,2086.2k $19.0k $19.0k 0.00% —
74 CREATIVE FINANCIAL DESIGNS INC /ADV 0.00% of their portfolio KOKOMO, IN 6,0506.0k $19.0k $19.0k 0.00% —
75 Blue Trust, Inc. 0.00% of their portfolio BRENTWOOD, TN 5,0005.0k $14.0k $14.0k 0.00% —
76 Tradition Wealth Management, LLC 0.00% of their portfolio EDINA, MN 4,3384.3k $14.0k $14.0k 0.00% —
77 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 3,7593.8k $11.0k $11.0k 0.00% —
78 BOURGEON CAPITAL MANAGEMENT LLC 0.00% of their portfolio Darien, CT 3,5003.5k $11.0k $11.0k 0.00% —
79 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 2,9242.9k $9.0k $9.0k 0.00% —
80 Private Ocean, LLC 0.00% of their portfolio SAN RAFAEL, CA 1,2501.2k $3.0k $3.0k 0.00% —
81 FMR LLC 0.00% of their portfolio BOSTON, MA 1,0041.0k $3.0k $3.0k 0.00% —
82 FIFTH THIRD BANCORP 0.00% of their portfolio CINCINNATI, OH 1,0001.0k $3.0k $3.0k 0.00% —
83 Capital Analysts, LLC 0.00% of their portfolio FORT WASHINGTON, PA 1,0001.0k $3.0k $3.0k 0.00% —
84 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 984984 $3.0k $3.0k 0.00% —
85 CWM, LLC 0.00% of their portfolio OMAHA, NE 670670 $2.0k $2.0k 0.00% —
86 China Universal Asset Management Co., Ltd. 0.00% of their portfolio SHANGHAI, F4 588588 $2.0k $2.0k 0.00% —
87 BELLEVUE ASSET MANAGEMENT, LLC 0.00% of their portfolio BELLEVUE, WA 511511 $2.0k $2.0k 0.00% —
88 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 484484 $2.0k $2.0k 0.00% —
89 TCI Wealth Advisors, Inc. 0.00% of their portfolio Tucson, AZ 300300 $1.0k $1.0k 0.00% —
90 Federation des caisses Desjardins du Quebec 0.00% of their portfolio LEVIS, A8 300300 $945 $945 0.00% —
91 Daiwa Securities Group Inc. 0.00% of their portfolio CHIYODA-KU,TOKYO, M0 214214 $1.0k $1.0k 0.00% —
92 Truvestments Capital LLC 0.00% of their portfolio SARASOTA, FL 198198 $1.0k $1.0k 0.00% —
93 Larson Financial Group LLC 0.00% of their portfolio ST LOUIS, MO 150150 $0 $0 0.00% —
94 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% —