Marshall Wace
ARGX icon

Marshall Wace’s argenx ARGX Stock Holding History

Marshall Wace’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 		– Sell
-13,508
Closed -$11.4M – 3170
2025
Q4 		$11.4M Buy
13,508
+983
+8% +$841K 0.01% 824
2025
Q3 		$9.24M Sell
12,525
-165,199
-93% -$109M 0.01% 941
2025
Q2 		$98M Buy
177,724
+50,950
+40% +$29.6M 0.11% 174
2025
Q1 		$75M Sell
126,774
-64,779
-34% -$40.9M 0.1% 182
2024
Q4 		$118M Buy
191,553
+124,271
+185% +$72.8M 0.14% 119
2024
Q3 		$36.5M Sell
67,282
-46,490
-41% -$23.5M 0.04% 347
2024
Q2 		$48.9M Sell
113,772
-2,863
-2% -$1.1M 0.07% 264
2024
Q1 		$45.9M Sell
116,635
-9,036
-7% -$3.5M 0.07% 277
2023
Q4 		$47.8M Sell
125,671
-182,877
-59% -$85.2M 0.08% 245
2023
Q3 		$152M Buy
308,548
+116,433
+61% +$57M 0.31% 58
2023
Q2 		$74.9M Buy
192,115
+4,181
+2% +$1.64M 0.15% 153
2023
Q1 		$70M Buy
187,934
+57,274
+44% +$21.2M 0.15% 147
2022
Q4 		$49.5M Buy
130,660
+29,428
+29% +$11M 0.11% 204
2022
Q3 		$35.7M Buy
+101,232
New +$37.5M 0.08% 289
2022
Q1 		– Sell
-1,540
Closed -$540K – 3319
2021
Q4 		$540K Sell
1,540
-9,705
-86% -$2.95M ﹤0.01% 2754
2021
Q3 		$3.4M Buy
+11,245
New +$3.56M 0.01% 1187
2019
Q4 		– Sell
-353
Closed -$40K – 1676
2019
Q3 		$40K Buy
+353
New +$47.7K ﹤0.01% 1521
2019
Q2 		– Sell
-973
Closed -$121K – 1332
2019
Q1 		$121K Buy
+973
New +$114K ﹤0.01% 1409
2018
Q4 		– Sell
-7,477
Closed -$567K – 1576
2018
Q3 		$567K Buy
+7,477
New +$663K ﹤0.01% 901

Other funds holding ARGX

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $63.1B AUM 35.51% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Marshall Wace's ARGX Position: Q1 2026 in Review

Marshall Wace sold out of argenx (ARGX) in Q1 2026, closing a stake of 13,508 shares — an estimated $11.4M sold.

Marshall Wace first reported a position in ARGX in Q3 2018 and held it in 19 quarters. The position peaked at $152M in Q3 2023. 477 funds tracked by Wall St. Rank hold ARGX as of Q1 2026.

  • Marshall Wace reported no remaining argenx position as of Q1 2026 after selling out during the quarter.
  • Marshall Wace sold 13,508 argenx shares in Q1 2026, an estimated $11.4M.
  • Marshall Wace first reported a position in argenx in Q3 2018 and held it in 19 quarters.
  • Marshall Wace's argenx position peaked at $152M in Q3 2023.
  • 477 funds tracked by Wall St. Rank held argenx as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.