Belgian short selling: week 39, 2026

From 21 Sep 2026 to 25 Sep 2026, 14 Belgium companies had disclosed short positions across 5 publication days. Changes are percentage points (pp) of issued share capital, between each company's last figure before the week and its last figure of the week, from official FSMA data.

Biggest rises

No disclosed positions rose this week.

Biggest falls

Company	Start	End	Change (pp)
SYENSQO	0.79%	0.68%	−0.11
MELEXIS	0.59%	0.51%	−0.08

New disclosures

ARGENX, first disclosed figure 0.50%

Most shorted at week end

SOLVAY, 1.39%
BIOCARTIS, 1.21%
UMICORE, 1.20%
BARCO, 1.02%
CP INVEST, 0.98%

Full table: most shorted Belgian stocks.