Big move · Belgium stocks
argenx SE (ARGX) rises 6.9% to €780.20
Its biggest one-day rise in 2 months.
- Close
- €780.20
- On the day
- +6.9%
- Volume
- 1.4× average
- vs 52-week high
- −14.5%
argenx SE closing prices
The last 90 closes up to 20 October 2026. The live chart is on the ARGX page.
What happened
argenx SE (ARGX) closed at €780.20 on 20 October 2026, up 6.9% from €729.80 the session before.
It was ARGX's biggest one-day rise in 2 months. It was the second higher close in a row. Over 5 sessions the price is up 8.6%, and over 20 sessions it is down 8.8%.
The close is 14.5% below the highest close of the past year (€912.40 on 3 Sept 2026) and 33.8% above the lowest (€583.20 on 24 Mar 2026).
Volume was close to its recent average.
Across the 8 BRUSSELS stocks we track, 5 closed higher and 3 closed lower that day, with a median change of +0.71%. ARGX's change was +6.9%.
This page reports what the price and volume data show. It does not say why the price moved.
The numbers
| Previous close | €729.80 |
|---|---|
| Close | €780.20 |
| Change on the day | +6.91% |
| Change over 5 sessions | +8.57% |
| Change over 20 sessions | −8.79% |
| Volume | 135,789 |
| Average volume, up to 20 sessions before | 98,506 |
| Volume against that average | 1.4 times |
| Highest close in the past year | €912.40 (3 Sept 2026) |
| Lowest close in the past year | €583.20 (24 Mar 2026) |
The full chart and history are on argenx SE (ARGX). More from this market: BRUSSELS news today.