Corton Capital’s Omeros OMER Stock Holding History

Corton Capital’s Portfolio OMER Stock Details OMER Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q3	–	Sell	-38,967	Closed	-$117K	–	348
2025 Q2	$117K	Buy	+38,967	New	+$194K	0.14%	300
2022 Q2	–	Sell	-46,949	Closed	-$282K	–	464
2022 Q1	$282K	Buy	+46,949	New	+$293K	0.12%	256

Other funds holding OMER

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

ISL

Ingalls & Snyder LLC New York $2.83B AUM 21.61% 1-Year Est. Return

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

Stifel Financial St. Louis, Missouri $109B AUM 21.36% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

PAMP

Polar Asset Management Partners Toronto, Ontario, Canada $5.01B AUM 35.27% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

D.E. Shaw & Co New York $166B AUM 43.98% 1-Year Est. Return

Two Sigma Investments New York $124B AUM 33.93% 1-Year Est. Return

Corton Capital's OMER Position: Q3 2025 in Review

Corton Capital sold out of Omeros (OMER) in Q3 2025, closing a stake of 38,967 shares — an estimated $117K sold.

Corton Capital first reported a position in OMER in Q1 2022 and held it in 2 quarters. The position peaked at $282K in Q1 2022. 133 funds tracked by Wall St. Rank hold OMER as of Q3 2025.

Corton Capital reported no remaining Omeros position as of Q3 2025 after selling out during the quarter.
Corton Capital sold 38,967 Omeros shares in Q3 2025, an estimated $117K.
Corton Capital first reported a position in Omeros in Q1 2022 and held it in 2 quarters.
Corton Capital's Omeros position peaked at $282K in Q1 2022.
133 funds tracked by Wall St. Rank held Omeros as of Q3 2025.

Based on Corton Capital's 13F filing for Q3 2025, filed 14 Nov 2025.