JY
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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 		$1.25M Buy
+45,500
New +$1.21M ﹤0.01% 7623
2026
Q1 		– Sell
-22,900
Closed -$705K – 13507
2025
Q4 		$705K Buy
+22,900
New +$714K ﹤0.01% 8009
2025
Q3 		– Sell
-16,900
Closed -$349K – 12953
2025
Q2 		$349K Buy
16,900
+4,200
+33% +$86.2K ﹤0.01% 10001
2025
Q1 		$249K Sell
12,700
-12,500
-50% -$262K ﹤0.01% 10487
2024
Q4 		$526K Buy
25,200
+7,900
+46% +$174K ﹤0.01% 8537
2024
Q3 		$422K Buy
17,300
+2,700
+18% +$72.2K ﹤0.01% 8875
2024
Q2 		$367K Sell
14,600
-10,300
-41% -$292K ﹤0.01% 9009
2024
Q1 		$745K Buy
+24,900
New +$731K ﹤0.01% 7571
2023
Q4 		– Sell
-18,000
Closed -$635K – 12695
2023
Q3 		$635K Buy
18,000
+5,000
+38% +$191K ﹤0.01% 7680
2023
Q2 		$494K Sell
13,000
-88,000
-87% -$3.51M ﹤0.01% 8347
2023
Q1 		$3.81M Buy
101,000
+74,500
+281% +$2.86M ﹤0.01% 3867
2022
Q4 		$1.12M Buy
+26,500
New +$1.09M ﹤0.01% 5910
2022
Q1 		– Sell
-6,700
Closed -$265K – 13367
2021
Q4 		$265K Sell
6,700
-6,600
-50% -$275K ﹤0.01% 10781
2021
Q3 		$581K Sell
13,300
-7,300
-35% -$328K ﹤0.01% 8983
2021
Q2 		$841K Sell
20,600
-55,700
-73% -$2.15M ﹤0.01% 8240
2021
Q1 		$2.5M Buy
76,300
+34,900
+84% +$1.31M ﹤0.01% 5373
2020
Q4 		$1.68M Buy
41,400
+4,400
+12% +$164K ﹤0.01% 5476
2020
Q3 		$1.35M Buy
37,000
+28,600
+340% +$1.03M ﹤0.01% 5391
2020
Q2 		$285K Buy
+8,400
New +$229K ﹤0.01% 8447

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.