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Quantum Portfolio Management LLC

Position in ARGX — Argenx SE

CIK 2003672 New York, NY

Position in ARGX

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$283,897
+$59,711 QoQ
Shares Held
306
-0.3% QoQ
Ownership
0.000%
of shares outstanding
% of Portfolio
0.14%
of 13F equity value
Holder Rank
#354
of 504 holders
Holding Since
Mar 2025
6 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ARGX Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

Quantum Portfolio Management LLC holds $1,425,090 across 6 Biotechnology names. ARGX ranks #2 (19.9% of the industry book) .

# Ticker Company Shares Value (USD) Open
2 ARGX
Argenx SE
This page
306 $283,897

All Filings in ARGX

Export CSV
6 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $283,897 306
2026-03-31 $224,186 307
2025-12-31 $518,866 617
2025-09-30 $691,093 937
2025-06-30 $642,171 1,165
2025-03-31 $1,271,326 2,148