Atom Investors’s Omeros OMER Stock Holding History

Atom Investors’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
2026 Q2	$228K	Buy	+23,945	New	+$285K	0.02%	750
2025 Q4	–	Sell	-53,266	Closed	-$218K	–	749
2025 Q3	$218K	Buy	53,266 +41,133	+339%	+$163K	0.02%	500
2025 Q2	$36.4K	Buy	+12,133	New	+$60.4K	﹤0.01%	581
2025 Q1	–	Sell	-16,657	Closed	-$165K	–	607
2024 Q4	$165K	Buy	+16,657	New	+$114K	0.02%	428
2020 Q3	–	Sell	-340,389	Closed	-$5.01M	–	595
2020 Q2	$5.01M	Buy	340,389 +41,384	+14%	+$618K	0.33%	59
2020 Q1	$4M	Buy	299,005 +85,315	+40%	+$1.14M	0.35%	71
2019 Q4	$3.01M	Buy	213,690 +20,513	+11%	+$300K	0.25%	109
2019 Q3	$3.15M	Buy	193,177 +62,150	+47%	+$1.07M	0.22%	129
2019 Q2	$2.06M	Buy	+131,027	New	+$2.35M	0.13%	187

Other funds holding OMER

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

ISL

Ingalls & Snyder LLC New York $3.66B AUM 57.76% 1-Year Est. Return

UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Stifel Financial St. Louis, Missouri $120B AUM 27.84% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Atom Investors's OMER Position: Q2 2026 in Review

Atom Investors opened a new position in Omeros (OMER) in Q2 2026: 23,945 shares worth $228K. The stake represents 0.02% of the portfolio and ranks #750 among its holdings. This is a return to the name: Atom Investors previously reported a position in OMER as recently as Q3 2025.

Atom Investors first reported a position in OMER in Q2 2019 and has held it in 9 quarters since. The position peaked at $5.01M in Q2 2020. 172 funds tracked by Wall St. Rank hold OMER as of Q2 2026.

Atom Investors held 23,945 shares of Omeros worth $228K as of Q2 2026.
Omeros was a new Atom Investors position in Q2 2026.
Omeros made up 0.02% of Atom Investors's portfolio in Q2 2026, its #750 holding.
Atom Investors first reported a position in Omeros in Q2 2019 and has held it in 9 quarters since.
Atom Investors's Omeros position peaked at $5.01M in Q2 2020.
172 funds tracked by Wall St. Rank held Omeros as of Q2 2026.

Based on Atom Investors's 13F filing for Q2 2026, filed 14 Aug 2026.