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Rossby Financial’s argenx ARGX Stock Holding History

Rossby Financial’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
Q2 		$68.7K Sell
74
-13
-15% -$10.7K 0.01% 618
2026
Q1 		$64.7K Buy
87
+16
+23% +$12.5K 0.01% 668
2025
Q4 		$59.7K Hold
71
– – 0.02% 515
2025
Q3 		$54.5K Buy
71
+38
+115% +$25.1K 0.02% 521
2025
Q2 		$18.2K Buy
+33
New +$19.2K 0.01% 669

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
JT
Jupiter Topco New York $245B AUM
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
ACA
Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 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
Morgan Stanley
Morgan Stanley New York $1.89T AUM 35.08% 1-Year Est. Return

Rossby Financial's ARGX Position: Q2 2026 in Review

Rossby Financial reduced its argenx (ARGX) stake by 15% in Q2 2026, selling an estimated $10.7K and leaving 74 shares worth $68.7K. The position accounts for 0.01% of the portfolio, ranked #618.

Rossby Financial first reported a position in ARGX in Q2 2025 and has held it in 5 quarters since. 508 funds tracked by Wall St. Rank hold ARGX as of Q2 2026.

  • Rossby Financial held 74 shares of argenx worth $68.7K as of Q2 2026.
  • Rossby Financial sold 13 argenx shares in Q2 2026, an estimated $10.7K.
  • argenx made up 0.01% of Rossby Financial's portfolio in Q2 2026, its #618 holding.
  • Rossby Financial first reported a position in argenx in Q2 2025 and has held it in 5 quarters since.
  • 508 funds tracked by Wall St. Rank held argenx as of Q2 2026.

Based on Rossby Financial's 13F filing for Q2 2026, filed 4 Aug 2026.