EC
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EcoR1 Capital’s argenx ARGX Stock Holding History

EcoR1 Capital’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
2024
Q1 		– Sell
-300,997
Closed -$115M – 61
2023
Q4 		$115M Buy
+300,997
New +$140M 2.97% 11
2022
Q4 		– Sell
-17,527
Closed -$6.19M – 67
2022
Q3 		$6.19M Sell
17,527
-107,473
-86% -$39.8M 0.18% 43
2022
Q2 		$47.4M Hold
125,000
– – 1.65% 17
2022
Q1 		$39.4M Buy
+125,000
New +$36.3M 1.23% 22
2020
Q1 		– Sell
-202,117
Closed -$32.4M – 52
2019
Q4 		$32.4M Sell
202,117
-329,048
-62% -$44.5M 3.08% 12
2019
Q3 		$60.5M Sell
531,165
-50,000
-9% -$6.76M 8.08% 5
2019
Q2 		$82.3M Sell
581,165
-243,922
-30% -$31M 8.48% 3
2019
Q1 		$103M Hold
825,087
– – 11.15% 1
2018
Q4 		$79.3M Buy
+825,087
New +$73.3M 9.12% 1

Other funds holding ARGX

T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Artisan Partners
Artisan Partners Milwaukee, Wisconsin $61.3B AUM 26.25% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $733B AUM 35.63% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return
BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
BG
Bellevue Group Kuesnacht, Switzerland $4.2B AUM 54.85% 1-Year Est. Return
Morgan Stanley
Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return