Marshall Wace
GMAB icon

Marshall Wace’s Genmab GMAB Stock Holding History

Marshall Wace’s Portfolio GMAB Stock Details GMAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$402K Sell
15,000
-343,440
-96% -$10.3M ﹤0.01% 2544
2025
Q4 		$11M Sell
358,440
-174,769
-33% -$5.45M 0.01% 836
2025
Q3 		$16.4M Sell
533,209
-1,374,075
-72% -$33.5M 0.02% 741
2025
Q2 		$39.4M Sell
1,907,284
-274,226
-13% -$5.63M 0.04% 361
2025
Q1 		$42.7M Buy
2,181,510
+1,059,214
+94% +$22.2M 0.05% 318
2024
Q4 		$23.4M Buy
1,122,296
+694,243
+162% +$15.3M 0.03% 489
2024
Q3 		$10.4M Sell
428,053
-220,326
-34% -$5.89M 0.01% 747
2024
Q2 		$16.3M Sell
648,379
-301,046
-32% -$8.54M 0.02% 564
2024
Q1 		$28.4M Buy
949,425
+734,017
+341% +$21.6M 0.04% 395
2023
Q4 		$6.86M Buy
215,408
+4,609
+2% +$145K 0.01% 796
2023
Q3 		$7.43M Buy
+210,799
New +$8.03M 0.02% 741
2023
Q1 		– Sell
-8,259
Closed -$350K – 2828
2022
Q4 		$350K Buy
+8,259
New +$340K ﹤0.01% 2510
2021
Q2 		– Sell
-8,595
Closed -$282K – 2794
2021
Q1 		$282K Sell
8,595
-57,447
-87% -$2.16M ﹤0.01% 2146
2020
Q4 		$2.69M Sell
66,042
-158,987
-71% -$5.94M 0.01% 823
2020
Q3 		$8.24M Sell
225,029
-291,274
-56% -$10.5M 0.05% 353
2020
Q2 		$17.5M Buy
516,303
+279,003
+118% +$7.6M 0.12% 177
2020
Q1 		$5.03M Buy
+237,300
New +$5.29M 0.05% 381

Other funds holding GMAB

OAG
Orbis Allan Gray Hamilton, Bermuda $23.7B AUM 65.43% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return
PBA
Paradigm Biocapital Advisors New York $4.89B AUM 251.12% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $185B AUM 39.58% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
HL
Harding Loevner Bridgewater, New Jersey $9.72B AUM 22.38% 1-Year Est. Return
DM
Deerfield Management New York $8.48B AUM 99.04% 1-Year Est. Return
First Trust Advisors
First Trust Advisors Wheaton, Illinois $140B AUM 27.84% 1-Year Est. Return

Marshall Wace's GMAB Position: Q1 2026 in Review

Marshall Wace reduced its Genmab (GMAB) stake by 96% in Q1 2026, selling an estimated $10.3M and leaving 15,000 shares worth $402K. The position accounts for ﹤0.01% of the portfolio, ranked #2544.

Marshall Wace first reported a position in GMAB in Q1 2020 and has held it in 17 quarters since. The position peaked at $42.7M in Q1 2025. 272 funds tracked by Wall St. Rank hold GMAB as of Q1 2026.

  • Marshall Wace held 15,000 shares of Genmab worth $402K as of Q1 2026.
  • Marshall Wace sold 343,440 Genmab shares in Q1 2026, an estimated $10.3M.
  • Genmab made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2544 holding.
  • Marshall Wace first reported a position in Genmab in Q1 2020 and has held it in 17 quarters since.
  • Marshall Wace's Genmab position peaked at $42.7M in Q1 2025.
  • 272 funds tracked by Wall St. Rank held Genmab as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.