ARGX — Argenx SE

Ownership history in BB BIOTECH AG  ·  5 quarters on record

This page tracks every 13F SEC filing in which BB BIOTECH AG reported a position in Argenx SE (ARGX). Data includes quarterly share count, position size as % of portfolio, estimated market value, and end-of-quarter stock price — sourced directly from SEC EDGAR 13F filings.

Peak position
2.84% (2019 Q1)
Avg. % of fund
1.8%
First filed
2018 Q1
Last filed
2019 Q1
Quarters held
5
Quarter Action Shares Change Chg % % of Fund Mkt Value Price (EOQ)
2019 Q1 ADDED 904,739 +20,000 +2.3% 2.84% $112.9M $124.84
2018 Q4 ADDED 884,739 +150,000 +20.4% 2.72% $85.0M $96.07
2018 Q3 ADDED 734,739 +285,690 +63.6% 1.47% $55.7M $75.84
2018 Q2 ADDED 449,049 +52,230 +13.2% 1.07% $37.2M $82.86
2018 Q1 INITIATED 396,819 — — 0.88% $31.9M —
% of Fund (quarterly)    ARGX price (monthly, adj. close)

Other funds also holding ARGX

As of 2025 Q4 — sorted by position size

Checkpoint Capital L.P. 37.31% Eagle Health Investments LP 3Y 11.59% Avoro Capital Advisors LLC 3Y 7Y 8.18% Artia Global Partners LP 3Y 7.71% Bellevue Group AG 3Y 7Y 7.36% RTW INVESTMENTS, LP 3Y 7Y 5.67% Patient Square Capital LP 3Y 4.68% Rock Springs Capital Management LP 3Y 7Y 4.45% Tri Locum Partners LP 3Y 4.11% DCF Advisers, LLC 3Y 3.08%
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