v3.26.1
Cover
6 Months Ended
Jun. 30, 2026
Cover [Abstract]  
Document Type 6-K
Entity Registrant Name ARGENX SE
Entity Central Index Key 0001697862
Amendment Flag false
Document Period End Date Jun. 30, 2026
Document Fiscal Period Focus Q2
Current Fiscal Year End Date --12-31
Document Fiscal Year Focus 2026