Belgium: Daily Stock Market Performance Insight - December 17, 2025

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Daily Gainers

Daily Losers

Average Return

0.01%

Total Stocks

125

View Detailed Market Cap Breakdown

Market Cap	Daily Gainers	Daily Losers	Average Return	Total Stocks
Large Cap	15	21	0.02%	38
Mid Cap	17	13	0.42%	33

Daily Streak Leaders for December 17, 2025

All (9) Large Cap (4) Mid Cap (4) Small Cap (1)

Stock	Streak	Streak Return
U Umicore \| UMI Industrials \| Large Cap	6 days ↑	12.58%
T Titan Cement \| TITC Basic Materials \| Large Cap	3 days ↑	3.28%
M Melexis N.V \| MELE Technology \| Large Cap	8 days ↓	-7.13%
Melexis N.V faces persistent headwinds with a 8-day decline (60.35 → 56.05), down 7.1%. However, fundamentals remain robust: 211.6M revenue generating 37.8M profit (17.9% margin) as of Qtr ending Jun 2025 suggests this could be a temporary setback. Value hunters take note.
S Syneos Health \| SYENS Basic Materials \| Large Cap	3 days ↓	-6.29%
Syneos Health takes a breather following a 3-day decline (71.58 → 67.08), down 6.3%. Weak margins on 1.7B revenue with only 2.0M profit (0.1% margin) in Qtr ending Mar 2025 validate market skepticism. Structural improvements needed before sentiment shifts.
B Bpost SA \| BPOST Industrials \| Mid Cap	5 days ↑	7.94%
Bpost SA shows promise with a 5-day winning streak (1.89 → 2.04), delivering 7.9% gains. With 1.1B revenue generating only 1.3M profit (0.1% margin) in Qtr ending Jun 2025, the market prices in future margin expansion potential.
A Ascencio SCA \| ASCE Real Estate \| Mid Cap	5 days ↑	1.97%
X X-Fab Silicon \| XFAB Technology \| Mid Cap	3 days ↓	-6.08%
X-Fab Silicon pulls back after a 3-day decline (5.26 → 4.94), down 6.1%. Financial struggles compound the decline: despite 183.7M revenue, - 334,560 losses persist (-0.2% margin) as of Qtr ending Jun 2025. Until profitability improves, caution remains warranted.
E Exmar N.V \| EXM Energy \| Mid Cap	3 days ↓	-1.00%
C CMB Tech N.V \| CMBT Energy \| Small Cap	2 days ↓	-1.02%
CMB Tech N.V pulls back after a 2-day decline (9.79 → 9.69), down 1.0%. However, fundamentals remain robust: 235.0M revenue generating 40.4M profit (17.2% margin) as of Qtr ending Mar 2025 suggests this could be a temporary setback. Value hunters take note.

Belgium Market Daily Gainers & Losers: December 17, 2025

All (20) Large Cap (10) Mid Cap (10)

Top Belgium Stock Gainers (December 17, 2025)

Stock	Day Open	Day Close	Daily Change	Volume	Daily Volume
U Umicore \| UMI Industrials \| Large Cap	€17.37	€17.45	3.81%	1.5M	1.5M
A Argenx SE \| ARGX Healthcare \| Large Cap	€729.20	€744.80	2.50%	87.2K	87.2K
E Elia Group SA/NV \| ELI Utilities \| Large Cap	€104.30	€106.30	2.41%	76.9K	76.9K
C Cofinimmo SA \| COFB Real Estate \| Large Cap	€75.50	€76.75	2.33%	88.2K	88.2K
A Aedifica N.V \| AED Real Estate \| Large Cap	€64.70	€65.70	1.78%	134.5K	134.5K
O Ontex Group N.V \| ONTEX Consumer Defensive \| Mid Cap	€4.38	€4.70	7.06%	277.9K	277.9K
F Floridienne S.A \| FLOB Industrials \| Mid Cap	€600.00	€605.00	3.42%	72	72
N Nyxoah S.A \| NYXH Healthcare \| Mid Cap	€4.15	€4.24	3.16%	34.8K	34.8K
I Ion Beam \| IBAB Healthcare \| Mid Cap	€11.50	€11.82	2.96%	27.4K	27.4K
H Home Invest Belgium \| HOMI Real Estate \| Mid Cap	€17.96	€18.30	1.89%	10.8K	10.8K

Biggest Belgium Stock Losers (December 17, 2025)

Stock	Day Open	Day Close	Daily Change	Volume	Daily Volume
C Colruyt Group N.V \| COLR Consumer Defensive \| Large Cap	€30.92	€31.50	-3.37%	233.5K	233.5K
S Syneos Health \| SYENS Basic Materials \| Large Cap	€68.62	€67.08	-2.41%	162.2K	162.2K
D Deme Group N.V \| DEME Industrials \| Large Cap	€139.60	€137.00	-1.72%	10.7K	10.7K
A Ackermans & Van \| ACKB Industrials \| Large Cap	€231.60	€228.20	-1.47%	40.3K	40.3K
C CMB Tech N.V \| CMBT Energy \| Large Cap	€8.35	€8.19	-1.33%	289.4K	289.4K
E Exmar N.V \| EXM Energy \| Mid Cap	€10.04	€9.90	-2.37%	1.7K	1.7K
C Campine S.A \| CAMB Industrials \| Mid Cap	€169.00	€169.00	-1.74%	963	963
C CFE \| CFEB Industrials \| Mid Cap	€8.90	€8.92	-1.55%	1.1K	1.1K
I Immobel S.A \| IMMO Real Estate \| Mid Cap	€23.50	€23.20	-1.28%	2.1K	2.1K
R Recticel S.A \| RECT Industrials \| Mid Cap	€9.65	€9.58	-1.03%	51.0K	51.0K

Most Active Belgium Stocks on December 17, 2025

All (10) Large Cap (5) Mid Cap (5)

Stock	Day Open	Day Close	Daily Change	Volume	Daily Volume
A Anheuser-Busch InBev \| ABI Consumer Defensive \| Large Cap	€54.54	€55.58	1.31%	2.3M	2.3M
U Umicore \| UMI Industrials \| Large Cap	€17.37	€17.45	3.81%	1.5M	1.5M
A Azelis Group NV \| AZE Basic Materials \| Large Cap	€9.24	€9.30	0.22%	688.1K	688.1K
K KBC Group NV \| KBC Financial Services \| Large Cap	€110.85	€111.90	1.27%	501.5K	501.5K
P Proximus \| PROX Communication Services \| Large Cap	€6.94	€7.01	-0.57%	345.9K	345.9K
O Ontex Group N.V \| ONTEX Consumer Defensive \| Mid Cap	€4.38	€4.70	7.06%	277.9K	277.9K
B Bpost SA \| BPOST Industrials \| Mid Cap	€2.03	€2.04	0.49%	134.0K	134.0K
B Barco N.V \| BAR Technology \| Mid Cap	€11.90	€11.87	0.17%	121.1K	121.1K
O Onward Medical N.V \| ONWD Healthcare \| Mid Cap	€3.95	€3.95	0.77%	93.7K	93.7K
D Deceuninck NV \| DECB Industrials \| Mid Cap	€2.26	€2.27	0.44%	93.3K	93.3K