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 		$3.29M Buy
4,500
+3,600
+400% +$2.82M ﹤0.01% 1428
2025
Q4 		$757K Sell
900
-5,300
-85% -$4.54M ﹤0.01% 2900
2025
Q3 		$4.57M Buy
6,200
+1,400
+29% +$923K ﹤0.01% 1545
2025
Q2 		$2.65M Buy
4,800
+3,800
+380% +$2.21M ﹤0.01% 1871
2025
Q1 		$591K Sell
1,000
-6,700
-87% -$4.23M ﹤0.01% 3216
2024
Q4 		$4.74M Sell
7,700
-8,600
-53% -$5.04M ﹤0.01% 1510
2024
Q3 		$8.84M Sell
16,300
-4,200
-20% -$2.12M 0.01% 1116
2024
Q2 		$8.81M Buy
20,500
+5,300
+35% +$2.03M 0.01% 1090
2024
Q1 		$5.98M Sell
15,200
-9,400
-38% -$3.64M ﹤0.01% 1467
2023
Q4 		$9.36M Buy
24,600
+12,000
+95% +$5.59M 0.01% 1134
2023
Q3 		$6.19M Buy
12,600
+500
+4% +$245K ﹤0.01% 1199
2023
Q2 		$4.71M Sell
12,100
-6,000
-33% -$2.36M ﹤0.01% 1352
2023
Q1 		$6.74M Buy
18,100
+8,300
+85% +$3.07M 0.01% 1111
2022
Q4 		$3.71M Buy
9,800
+6,300
+180% +$2.36M ﹤0.01% 1414
2022
Q3 		$1.24M Buy
3,500
+2,500
+250% +$926K ﹤0.01% 2411
2022
Q2 		$378K Buy
1,000
+600
+150% +$193K ﹤0.01% 3806
2022
Q1 		$126K Sell
400
-1,900
-83% -$552K ﹤0.01% 5819
2021
Q4 		$805K Buy
2,300
+1,000
+77% +$304K ﹤0.01% 3162
2021
Q3 		$395K Hold
1,300
– – ﹤0.01% 4465
2021
Q2 		$391K Buy
1,300
+1,296
+32,400% +$369K ﹤0.01% 4546
2021
Q1 		$110K Sell
4
-42
-91% -$13.3K ﹤0.01% 5611
2020
Q4 		$1.35M Buy
+46
New +$12.6K ﹤0.01% 2179
2020
Q3 		– Sell
-9
Closed -$202K – 7741
2020
Q2 		$202K Buy
+9
New +$1.6K ﹤0.01% 3988

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.