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
Q1 		$290K Sell
10,800
-5,000
-32% -$150K ﹤0.01% 9310
2025
Q4 		$487K Buy
+15,800
New +$492K ﹤0.01% 7742
2025
Q3 		– Sell
-11,300
Closed -$233K – 11121
2025
Q2 		$233K Sell
11,300
-33,600
-75% -$690K ﹤0.01% 8292
2025
Q1 		$879K Buy
+44,900
New +$942K ﹤0.01% 5810

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

Jane Street's GMAB Position: Q1 2026 in Review

Jane Street opened a new position in Genmab (GMAB) in Q1 2026: 98,432 shares worth $2.64M. The stake represents ﹤0.01% of the portfolio and ranks #4576 among its holdings. This is a return to the name: Jane Street previously reported a position in GMAB as recently as Q2 2025.

Jane Street first reported a position in GMAB in Q3 2019 and has held it in 15 quarters since. The position peaked at $7.73M in Q1 2023. 272 funds tracked by Wall St. Rank hold GMAB as of Q1 2026.

  • Jane Street held 98,432 shares of Genmab worth $2.64M as of Q1 2026.
  • Genmab was a new Jane Street position in Q1 2026.
  • Genmab made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #4576 holding.
  • Jane Street first reported a position in Genmab in Q3 2019 and has held it in 15 quarters since.
  • Jane Street's Genmab position peaked at $7.73M in Q1 2023.
  • 272 funds tracked by Wall St. Rank held Genmab as of Q1 2026.

Based on Jane Street's 13F filing for Q1 2026, filed 12 May 2026.