Jane Street
ARGX icon

Jane Street’s argenx ARGX Stock Holding History

Jane Street’s Portfolio ARGX Stock Details ARGX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$7.38M Buy
10,100
+5,100
+102% +$3.99M ﹤0.01% 2937
2025
Q4 		$4.2M Sell
5,000
-13,100
-72% -$11.2M ﹤0.01% 3506
2025
Q3 		$13.3M Buy
18,100
+11,500
+174% +$7.58M ﹤0.01% 2062
2025
Q2 		$3.64M Sell
6,600
-4,000
-38% -$2.32M ﹤0.01% 3457
2025
Q1 		$6.27M Sell
10,600
-17,800
-63% -$11.2M ﹤0.01% 2593
2024
Q4 		$17.5M Sell
28,400
-7,500
-21% -$4.39M ﹤0.01% 1363
2024
Q3 		$19.5M Buy
35,900
+8,400
+31% +$4.24M ﹤0.01% 1259
2024
Q2 		$11.8M Sell
27,500
-14,200
-34% -$5.44M ﹤0.01% 1840
2024
Q1 		$16.4M Buy
41,700
+22,000
+112% +$8.52M ﹤0.01% 1351
2023
Q4 		$7.49M Sell
19,700
-3,800
-16% -$1.77M ﹤0.01% 2321
2023
Q3 		$11.6M Sell
23,500
-11,300
-32% -$5.53M ﹤0.01% 1629
2023
Q2 		$13.6M Buy
34,800
+33,500
+2,577% +$13.2M ﹤0.01% 1590
2023
Q1 		$484K Buy
1,300
+700
+117% +$259K ﹤0.01% 6375
2022
Q4 		$227K Sell
600
-4,400
-88% -$1.65M ﹤0.01% 7470
2022
Q3 		$1.76M Sell
5,000
-10,000
-67% -$3.7M ﹤0.01% 4404
2022
Q2 		$5.68M Buy
15,000
+2,400
+19% +$773K ﹤0.01% 2480
2022
Q1 		$3.97M Buy
12,600
+8,600
+215% +$2.5M ﹤0.01% 3438
2021
Q4 		$1.4M Sell
4,000
-4,300
-52% -$1.31M ﹤0.01% 5233
2021
Q3 		$2.51M Sell
8,300
-1,200
-13% -$380K ﹤0.01% 4017
2021
Q2 		$2.86M Buy
9,500
+3,300
+53% +$938K ﹤0.01% 3651
2021
Q1 		$1.71M Sell
6,200
-7,000
-53% -$2.21M ﹤0.01% 4330
2020
Q4 		$3.88M Sell
13,200
-46,100
-78% -$12.7M ﹤0.01% 2451
2020
Q3 		$15.6M Buy
59,300
+7,900
+15% +$1.9M 0.01% 917
2020
Q2 		$11.6M Buy
+51,400
New +$9.12M 0.01% 1089

Other funds holding ARGX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $62.3B AUM 26.25% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RI
RTW Investments New York $10B AUM 135.35% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return

Jane Street's ARGX Position: Q1 2026 in Review

Jane Street increased its argenx (ARGX) stake by 35% in Q1 2026, buying an estimated $7.79M and bringing the position to 38,438 shares worth $28.1M. The position accounts for ﹤0.01% of the portfolio, ranked #1494.

Jane Street first reported a position in ARGX in Q1 2018 and has held it in 27 quarters since. The position peaked at $36.8M in Q3 2025. 476 funds tracked by Wall St. Rank hold ARGX as of Q1 2026.

  • Jane Street held 38,438 shares of argenx worth $28.1M as of Q1 2026.
  • Jane Street bought 9,953 argenx shares in Q1 2026, an estimated $7.79M.
  • argenx made up ﹤0.01% of Jane Street's portfolio in Q1 2026, its #1494 holding.
  • Jane Street first reported a position in argenx in Q1 2018 and has held it in 27 quarters since.
  • Jane Street's argenx position peaked at $36.8M in Q3 2025.
  • 476 funds tracked by Wall St. Rank held argenx as of Q1 2026.

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