Marshall Wace
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Marshall Wace’s Omeros OMER Stock Holding History

Marshall Wace’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 		– Sell
-83,682
Closed -$884K – 3580
2026
Q1 		$884K Buy
+83,682
New +$986K ﹤0.01% 2200
2025
Q4 		– Sell
-464,178
Closed -$1.9M – 3338
2025
Q3 		$1.9M Sell
464,178
-277,198
-37% -$1.1M ﹤0.01% 1648
2025
Q2 		$2.22M Buy
741,376
+97,224
+15% +$484K ﹤0.01% 1505
2025
Q1 		$5.29M Buy
644,152
+599,947
+1,357% +$5.3M 0.01% 1036
2024
Q4 		$437K Buy
+44,205
New +$303K ﹤0.01% 2091
2023
Q2 		– Sell
-24,206
Closed -$113K – 2828
2023
Q1 		$113K Sell
24,206
-55,966
-70% -$202K ﹤0.01% 2493
2022
Q4 		$181K Sell
80,172
-41,771
-34% -$115K ﹤0.01% 2713
2022
Q3 		$385K Sell
121,943
-107,405
-47% -$498K ﹤0.01% 2841
2022
Q2 		$631K Buy
229,348
+77,551
+51% +$263K ﹤0.01% 2682
2022
Q1 		$912K Buy
+151,797
New +$947K ﹤0.01% 2493
2021
Q2 		– Sell
-57,257
Closed -$1.02M – 2957
2021
Q1 		$1.02M Sell
57,257
-11,121
-16% -$216K ﹤0.01% 1644
2020
Q4 		$977K Sell
68,378
-364,277
-84% -$4.45M 0.01% 1226
2020
Q3 		$4.37M Buy
+432,655
New +$5.57M 0.03% 558

Other funds holding OMER

BlackRock
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
UBS Group Zurich, Switzerland $786B AUM 40.34% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Stifel Financial
Stifel Financial St. Louis, Missouri $120B AUM 27.84% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Northern Trust
Northern Trust Chicago, Illinois $860B AUM 41.15% 1-Year Est. Return

Marshall Wace's OMER Position: Q2 2026 in Review

Marshall Wace sold out of Omeros (OMER) in Q2 2026, closing a stake of 83,682 shares — an estimated $884K sold.

Marshall Wace first reported a position in OMER in Q3 2020 and held it in 13 quarters. The position peaked at $5.29M in Q1 2025. 172 funds tracked by Wall St. Rank hold OMER as of Q2 2026.

  • Marshall Wace reported no remaining Omeros position as of Q2 2026 after selling out during the quarter.
  • Marshall Wace sold 83,682 Omeros shares in Q2 2026, an estimated $884K.
  • Marshall Wace first reported a position in Omeros in Q3 2020 and held it in 13 quarters.
  • Marshall Wace's Omeros position peaked at $5.29M in Q1 2025.
  • 172 funds tracked by Wall St. Rank held Omeros as of Q2 2026.

Based on Marshall Wace's 13F filing for Q2 2026, filed 13 Aug 2026.