Simplex Trading
ARGX icon

Simplex Trading’s argenx ARGX Stock Holding History

Simplex Trading’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 		$5.33M Buy
7,300
+100
+1% +$78.3K ﹤0.01% 1071
2025
Q4 		$6.05M Sell
7,200
-2,000
-22% -$1.71M ﹤0.01% 1147
2025
Q3 		$6.79M Sell
9,200
-4,700
-34% -$3.1M ﹤0.01% 1216
2025
Q2 		$7.66M Sell
13,900
-3,000
-18% -$1.74M ﹤0.01% 1052
2025
Q1 		$10M Sell
16,900
-8,000
-32% -$5.05M 0.01% 889
2024
Q4 		$15.3M Buy
24,900
+16,900
+211% +$9.9M 0.01% 778
2024
Q3 		$4.34M Sell
8,000
-8,900
-53% -$4.5M ﹤0.01% 1605
2024
Q2 		$7.27M Buy
16,900
+2,900
+21% +$1.11M ﹤0.01% 1214
2024
Q1 		$5.51M Sell
14,000
-30,600
-69% -$11.9M ﹤0.01% 1538
2023
Q4 		$17M Buy
44,600
+32,400
+266% +$15.1M 0.01% 794
2023
Q3 		$6M Sell
12,200
-20,000
-62% -$9.78M ﹤0.01% 1218
2023
Q2 		$12.5M Buy
32,200
+21,600
+204% +$8.5M 0.01% 767
2023
Q1 		$3.95M Sell
10,600
-7,000
-40% -$2.59M ﹤0.01% 1455
2022
Q4 		$6.67M Buy
17,600
+7,200
+69% +$2.69M 0.01% 1063
2022
Q3 		$3.67M Sell
10,400
-2,400
-19% -$889K ﹤0.01% 1438
2022
Q2 		$4.85M Buy
12,800
+6,100
+91% +$1.96M 0.01% 1167
2022
Q1 		$2.11M Sell
6,700
-4,800
-42% -$1.4M ﹤0.01% 2053
2021
Q4 		$4.03M Buy
+11,500
New +$3.5M ﹤0.01% 1385
2021
Q2 		– Sell
-55
Closed -$1.51M – 9983
2021
Q1 		$1.51M Sell
55
-19
-26% -$6K ﹤0.01% 1931
2020
Q4 		$2.18M Sell
74
-45
-38% -$12.4K ﹤0.01% 1692
2020
Q3 		$3.12M Sell
119
-92
-44% -$22.1K ﹤0.01% 1169
2020
Q2 		$4.75M Sell
211
-76
-26% -$13.5K 0.01% 880
2020
Q1 		$3.78M Buy
287
+199
+226% +$29.1K 0.01% 851
2019
Q4 		$1.41M Buy
88
+86
+4,300% +$11.6K ﹤0.01% 1779
2019
Q3 		$22K Buy
+2
New +$270 ﹤0.01% 5737
2019
Q1 		– Sell
-5
Closed -$48K – 7088
2018
Q4 		$48K Buy
+5
New +$444 ﹤0.01% 4560

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

Simplex Trading's ARGX Position: Q1 2026 in Review

Simplex Trading increased its argenx (ARGX) stake by 136% in Q1 2026, buying an estimated $799K and bringing the position to 1,771 shares worth $1.29M. The position accounts for ﹤0.01% of the portfolio, ranked #2233.

Simplex Trading first reported a position in ARGX in Q4 2018 and has held it in 15 quarters since. The position peaked at $2.7M in Q1 2023. 475 funds tracked by Wall St. Rank hold ARGX as of Q1 2026.

  • Simplex Trading held 1,771 shares of argenx worth $1.29M as of Q1 2026.
  • Simplex Trading bought 1,021 argenx shares in Q1 2026, an estimated $799K.
  • argenx made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #2233 holding.
  • Simplex Trading first reported a position in argenx in Q4 2018 and has held it in 15 quarters since.
  • Simplex Trading's argenx position peaked at $2.7M in Q1 2023.
  • 475 funds tracked by Wall St. Rank held argenx as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.