JO
GMAB icon

John Overdeck’s Genmab GMAB Stock Holding History

John Overdeck’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 		$96.3M Buy
3,506,843
+1,167,411
+50% +$31M 0.07% 321
2026
Q1 		$62.8M Buy
2,339,432
+1,443,589
+161% +$43.3M 0.05% 410
2025
Q4 		$27.6M Sell
895,843
-495,372
-36% -$15.4M 0.04% 565
2025
Q3 		$42.7M Sell
1,391,215
-227,329
-14% -$5.54M 0.06% 368
2025
Q2 		$33.4M Sell
1,618,544
-281,222
-15% -$5.77M 0.06% 385
2025
Q1 		$37.2M Buy
1,899,766
+193,402
+11% +$4.06M 0.08% 293
2024
Q4 		$35.6M Buy
1,706,364
+938,455
+122% +$20.6M 0.08% 320
2024
Q3 		$18.7M Buy
767,909
+58,328
+8% +$1.56M 0.04% 514
2024
Q2 		$17.8M Buy
709,581
+458,855
+183% +$13M 0.04% 500
2024
Q1 		$7.5M Buy
+250,726
New +$7.37M 0.02% 771
2023
Q3 		– Sell
-134,913
Closed -$5.13M – 3050
2023
Q2 		$5.13M Buy
+134,913
New +$5.38M 0.01% 921
2023
Q1 		– Sell
-218,536
Closed -$9.26M – 3040
2022
Q4 		$9.26M Buy
+218,536
New +$9M 0.03% 588
2021
Q2 		– Sell
-39,100
Closed -$1.28M – 4241
2021
Q1 		$1.28M Sell
39,100
-67,400
-63% -$2.53M ﹤0.01% 2085
2020
Q4 		$4.33M Sell
106,500
-93,823
-47% -$3.51M 0.01% 1018
2020
Q3 		$7.33M Sell
200,323
-113,977
-36% -$4.12M 0.03% 621
2020
Q2 		$10.7M Buy
+314,300
New +$8.56M 0.05% 371

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
HL
Harding Loevner Bridgewater, New Jersey $10.6B AUM 19.39% 1-Year Est. Return

John Overdeck's GMAB Position: Q2 2026 in Review

John Overdeck increased its Genmab (GMAB) stake by 50% in Q2 2026, buying an estimated $31M and bringing the position to 3,506,843 shares worth $96.3M. The position accounts for 0.07% of the portfolio, ranked #321.

John Overdeck first reported a position in GMAB in Q2 2020 and has held it in 16 quarters since. 289 funds tracked by Wall St. Rank hold GMAB as of Q2 2026.

  • John Overdeck held 3,506,843 shares of Genmab worth $96.3M as of Q2 2026.
  • John Overdeck bought 1,167,411 Genmab shares in Q2 2026, an estimated $31M.
  • Genmab made up 0.07% of John Overdeck's portfolio in Q2 2026, its #321 holding.
  • John Overdeck first reported a position in Genmab in Q2 2020 and has held it in 16 quarters since.
  • 289 funds tracked by Wall St. Rank held Genmab as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.