JY
GMAB icon

Jeff Yass’s Genmab GMAB Stock Holding History

Jeff Yass’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
Q2 		$592K Buy
+21,565
New +$573K ﹤0.01% 9512
2026
Q1 		– Sell
-612,323
Closed -$18.4M – 13506
2025
Q4 		$18.9M Buy
612,323
+594,371
+3,311% +$18.5M ﹤0.01% 2279
2025
Q3 		$551K Sell
17,952
-12,442
-41% -$303K ﹤0.01% 8737
2025
Q2 		$628K Buy
+30,394
New +$624K ﹤0.01% 8637
2025
Q1 		– Sell
-17,244
Closed -$362K – 12840
2024
Q4 		$360K Sell
17,244
-11,541
-40% -$254K ﹤0.01% 9421
2024
Q3 		$702K Sell
28,785
-19,962
-41% -$534K ﹤0.01% 7648
2024
Q2 		$1.23M Buy
48,747
+19,859
+69% +$563K ﹤0.01% 6105
2024
Q1 		$864K Buy
28,888
+12,680
+78% +$372K ﹤0.01% 7237
2023
Q4 		$516K Buy
+16,208
New +$509K ﹤0.01% 8595
2023
Q3 		– Sell
-6,147
Closed -$234K – 12357
2023
Q2 		$234K Sell
6,147
-19,614
-76% -$782K ﹤0.01% 9961
2023
Q1 		$973K Sell
25,761
-4,156
-14% -$160K ﹤0.01% 6891
2022
Q4 		$1.27M Buy
+29,917
New +$1.23M ﹤0.01% 5664
2022
Q3 		– Sell
-8,968
Closed -$315K – 13534
2022
Q2 		$291K Sell
8,968
-9,952
-53% -$322K ﹤0.01% 9637
2022
Q1 		$685K Sell
18,920
-12,517
-40% -$430K ﹤0.01% 8140
2021
Q4 		$1.24M Sell
31,437
-29,309
-48% -$1.22M ﹤0.01% 6695
2021
Q3 		$2.65M Buy
60,746
+51,220
+538% +$2.3M ﹤0.01% 5220
2021
Q2 		$389K Sell
9,526
-55,596
-85% -$2.15M ﹤0.01% 10204
2021
Q1 		$2.14M Buy
65,122
+4,937
+8% +$186K ﹤0.01% 5769
2020
Q4 		$2.45M Sell
60,185
-7,644
-11% -$286K ﹤0.01% 4682
2020
Q3 		$2.48M Buy
67,829
+19,801
+41% +$716K ﹤0.01% 4210
2020
Q2 		$1.63M Buy
48,028
+38,486
+403% +$1.05M ﹤0.01% 4868
2020
Q1 		$202K Sell
9,542
-875
-8% -$19.5K ﹤0.01% 8669
2019
Q4 		$233K Buy
+10,417
New +$227K ﹤0.01% 8492

Other funds holding GMAB

PBA
Paradigm Biocapital Advisors New York $5.34B AUM 380.18% 1-Year Est. Return
OAG
Orbis Allan Gray Hamilton, Bermuda $29.1B AUM 60.8% 1-Year Est. Return
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
DM
Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.87B AUM 205.24% 1-Year Est. Return
Arrowstreet Capital
Arrowstreet Capital Boston, Massachusetts $225B AUM 49.49% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SI
Sofinnova Investments Menlo Park, California $1.93B AUM 134.74% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return

Jeff Yass's GMAB Position: Q2 2026 in Review

Jeff Yass opened a new position in Genmab (GMAB) in Q2 2026: 21,565 shares worth $592K. The stake represents ﹤0.01% of the portfolio and ranks #9512 among its holdings. This is a return to the name: Jeff Yass previously reported a position in GMAB as recently as Q4 2025.

Jeff Yass first reported a position in GMAB in Q4 2019 and has held it in 23 quarters since. The position peaked at $18.9M in Q4 2025. 289 funds tracked by Wall St. Rank hold GMAB as of Q2 2026.

  • Jeff Yass held 21,565 shares of Genmab worth $592K as of Q2 2026.
  • Genmab was a new Jeff Yass position in Q2 2026.
  • Genmab made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #9512 holding.
  • Jeff Yass first reported a position in Genmab in Q4 2019 and has held it in 23 quarters since.
  • Jeff Yass's Genmab position peaked at $18.9M in Q4 2025.
  • 289 funds tracked by Wall St. Rank held Genmab as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.