Jane Street
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Jane Street’s Genmab GMAB Stock Holding History

Jane Street’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 		$4.53M Buy
164,743
+66,311
+67% +$1.76M ﹤0.01% 3847
2026
Q1 		$2.64M Buy
+98,432
New +$2.95M ﹤0.01% 4576
2025
Q3 		– Sell
-360,489
Closed -$8.78M – 11120
2025
Q2 		$7.45M Buy
360,489
+219,655
+156% +$4.51M ﹤0.01% 2503
2025
Q1 		$2.76M Sell
140,834
-122,569
-47% -$2.57M ﹤0.01% 3843
2024
Q4 		$5.5M Buy
+263,403
New +$5.79M ﹤0.01% 2536
2024
Q3 		– Sell
-14,368
Closed -$361K – 9875
2024
Q2 		$361K Buy
+14,368
New +$407K ﹤0.01% 7506
2023
Q4 		– Sell
-18,651
Closed -$658K – 9401
2023
Q3 		$658K Sell
18,651
-172,462
-90% -$6.57M ﹤0.01% 5831
2023
Q2 		$7.26M Sell
191,113
-13,633
-7% -$544K ﹤0.01% 2260
2023
Q1 		$7.73M Buy
204,746
+190,759
+1,364% +$7.33M ﹤0.01% 1902
2022
Q4 		$592K Sell
13,987
-4,617
-25% -$190K ﹤0.01% 5838
2022
Q3 		$604K Buy
+18,604
New +$653K ﹤0.01% 6333
2022
Q1 		– Sell
-76,424
Closed -$3.08M – 10555
2021
Q4 		$3.08M Sell
76,424
-19,182
-20% -$800K ﹤0.01% 3638
2021
Q3 		$4.18M Buy
+95,606
New +$4.29M ﹤0.01% 3034
2021
Q2 		– Sell
-55,672
Closed -$1.83M – 9986
2021
Q1 		$1.83M Buy
+55,672
New +$2.09M ﹤0.01% 4181
2020
Q4 		– Sell
-6,428
Closed -$233K – 7707
2020
Q3 		$233K Buy
+6,428
New +$232K ﹤0.01% 6239
2019
Q4 		– Sell
-182,955
Closed -$3.71M – 5308
2019
Q3 		$3.71M Buy
+182,955
New +$3.6M 0.01% 1221

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

Jane Street's GMAB Position: Q2 2026 in Review

Jane Street increased its Genmab (GMAB) stake by 67% in Q2 2026, buying an estimated $1.76M and bringing the position to 164,743 shares worth $4.53M. The position accounts for ﹤0.01% of the portfolio, ranked #3847.

Jane Street first reported a position in GMAB in Q3 2019 and has held it in 16 quarters since. The position peaked at $7.73M in Q1 2023. 292 funds tracked by Wall St. Rank hold GMAB as of Q2 2026.

  • Jane Street held 164,743 shares of Genmab worth $4.53M as of Q2 2026.
  • Jane Street bought 66,311 Genmab shares in Q2 2026, an estimated $1.76M.
  • Genmab made up ﹤0.01% of Jane Street's portfolio in Q2 2026, its #3847 holding.
  • Jane Street first reported a position in Genmab in Q3 2019 and has held it in 16 quarters since.
  • Jane Street's Genmab position peaked at $7.73M in Q1 2023.
  • 292 funds tracked by Wall St. Rank held Genmab as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.