Which Belgium stocks moved this week? (Aug 31, 2026)

Taking the Belgium holdings inside the ETFs we track, here is where the movement was in the latest data.

Biggest gains:

• BUD (AB InBev) $80.13, 1.30% — held by 1 ETF
• KBCSY (KBC Group) $76.46, -0.27% — held by 1 ETF
• ARGX (Argenx SE) €895.20, -0.27% — held by 1 ETF
• UMICF (Umicore) $27.00, -0.95% — held by 1 ETF
• UCBJY (UCB S.A.) $125.29, -2.75% — held by 1 ETF

Biggest falls:

• UCBJY (UCB S.A.) $125.29, -2.75% — held by 1 ETF
• UMICF (Umicore) $27.00, -0.95% — held by 1 ETF
• KBCSY (KBC Group) $76.46, -0.27% — held by 1 ETF
• ARGX (Argenx SE) €895.20, -0.27% — held by 1 ETF
• BUD (AB InBev) $80.13, 1.30% — held by 1 ETF

Two cautions on reading a list like this. A single day's move tells you very little about a business, and small companies move further on less volume — so the top of a gainers list is often the least liquid name rather than the most improved one.

Companies trading within 5% of their 52-week high this week: KBCSY, ARGX.

Where a stock sits in its 52-week range is a momentum observation, not a valuation one — a company can sit at a high and still be cheap, or at a low and still be expensive.

The more useful follow-up for a fund investor is which ETFs hold these companies and at what weight, because that is what actually moves your portfolio. Each name above links to that breakdown.