Belgium: Monthly Stock Market Performance Insight - May 2026
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Monthly Gainers
79
Monthly Losers
61
Average Return
0.85%
Total Stocks
156
View Detailed Market Cap Breakdown
| Market Cap | Monthly Gainers | Monthly Losers | Average Return | Total Stocks |
|---|---|---|---|---|
| Large Cap | 27 | 16 | 4.00% | 43 |
| Mid Cap | 16 | 15 | 1.91% | 33 |
Monthly Streak Leaders for May 2026
| Stock | Streak | Streak Return |
|---|---|---|
|
A
Ageas N.V | AGS
Financial Services
|
Large Cap
|
7 months ↑ | 18.85% |
|
AGS has shown exceptional momentum with 7 consecutive positive months, delivering 18.85% returns. |
||
|
A
Azelis Group NV | AZE
Basic Materials
|
Large Cap
|
1 months ↓ | -13.67% |
|
AZE has posted 1 consecutive negative months with 13.67% losses. |
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|
S
Solvay SA | SOLB
Basic Materials
|
Large Cap
|
1 months ↓ | -7.44% |
|
Solvay SA pulls back after a 1-month decline (27.96 → 25.88), down 7.4%. Financial struggles compound the decline: despite 1.1B revenue, - 93.0M losses persist (-8.5% margin) as of Qtr ending Dec 2025. Until profitability improves, caution remains warranted. |
||
|
C
CFE | CFEB
Industrials
|
Mid Cap
|
2 months ↑ | 28.10% |
|
CFEB has posted 2 consecutive positive months with 28.10% gains. |
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|
C
Campine S.A | CAMB
Industrials
|
Mid Cap
|
2 months ↑ | 29.80% |
|
CAMB has posted 2 consecutive positive months with 29.80% gains. |
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|
O
Ontex Group N.V | ONTEX
Consumer Defensive
|
Mid Cap
|
4 months ↓ | -46.52% |
|
ONTEX under pressure with 4 straight negative months, declining 46.52%. |
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|
B
Banque Nationale de | BNB
Financial Services
|
Mid Cap
|
4 months ↓ | -14.48% |
|
BNB under pressure with 4 straight negative months, declining 14.48%. |
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Belgium Market Monthly Gainers & Losers: May 2026
Top Belgium Stock Gainers (May 2026)
| Stock | Month Open | Month Close | Monthly Change | Avg Daily Volume | Month Volume |
|---|---|---|---|---|---|
|
U
Umicore | UMI
Industrials
|
Large Cap
|
€19.00 | €25.28 | 47.15% | 883.2K | 19.4M |
|
V
Viohalco S.A | VIO
Industrials
|
Large Cap
|
€14.98 | €20.45 | 40.07% | 6.3K | 139.0K |
|
S
Syneos Health | SYENS
Basic Materials
|
Large Cap
|
€57.00 | €67.20 | 19.25% | 184.8K | 4.1M |
|
E
Euronav NV | EURN
Energy
|
Large Cap
|
€11.82 | €13.56 | 16.70% | 243.5K | 5.4M |
|
C
CMB Tech N.V | CMBT
Energy
|
Large Cap
|
€11.82 | €13.56 | 16.70% | 243.5K | 5.4M |
|
C
CFE | CFEB
Industrials
|
Mid Cap
|
€11.40 | €13.45 | 18.50% | 5.2K | 115.1K |
|
I
Ion Beam | IBAB
Healthcare
|
Mid Cap
|
€13.50 | €15.72 | 17.49% | 29.0K | 638.3K |
|
C
Campine S.A | CAMB
Industrials
|
Mid Cap
|
€221.00 | €257.00 | 16.82% | 710 | 15.6K |
|
J
Jensen-Group N.V | JEN
Industrials
|
Mid Cap
|
€69.20 | €80.00 | 16.62% | 3.5K | 76.8K |
|
E
Econocom Group S.E | ECONB
Technology
|
Mid Cap
|
€1.41 | €1.55 | 9.93% | 28.7K | 630.7K |
Biggest Belgium Stock Losers (May 2026)
| Stock | Month Open | Month Close | Monthly Change | Avg Daily Volume | Month Volume |
|---|---|---|---|---|---|
|
A
Azelis Group NV | AZE
Basic Materials
|
Large Cap
|
€11.41 | €9.85 | -12.68% | 482.2K | 10.6M |
|
S
Solvay SA | SOLB
Basic Materials
|
Large Cap
|
€27.96 | €25.88 | -7.24% | 407.6K | 9.0M |
|
F
Fluxys Belgium NV | FLUX
Energy
|
Large Cap
|
€21.80 | €20.40 | -6.42% | 4.3K | 94.4K |
|
S
Shurgard Self | SHUR
Real Estate
|
Large Cap
|
€26.30 | €24.60 | -6.11% | 76.6K | 1.7M |
|
S
Sipef NV | SIP
Consumer Defensive
|
Large Cap
|
€101.60 | €95.60 | -5.91% | 6.5K | 143.4K |
|
E
Evs Broadcast | EVS
Technology
|
Mid Cap
|
€37.50 | €31.20 | -16.80% | 31.7K | 696.8K |
|
O
Ontex Group N.V | ONTEX
Consumer Defensive
|
Mid Cap
|
€2.92 | €2.61 | -10.31% | 261.5K | 5.8M |
|
V
Van de Velde NV | VAN
Consumer Cyclical
|
Mid Cap
|
€32.80 | €30.70 | -6.12% | 3.7K | 80.9K |
|
C
Compagnie du Bois | COMB
Financial Services
|
Mid Cap
|
€330.00 | €320.00 | -4.19% | 413 | 9.1K |
|
B
Barco N.V | BAR
Technology
|
Mid Cap
|
€9.56 | €9.20 | -3.36% | 78.2K | 1.7M |
Most Active Belgium Stocks During May 2026
| Stock | Month Open | Month Close | Monthly Change | Avg Daily Volume | Monthly Volume |
|---|---|---|---|---|---|
|
A
Anheuser-Busch InBev | ABI
Consumer Defensive
|
Large Cap
|
€64.62 | €69.00 | 7.14% | 2.0M | 44.0M |
|
U
Umicore | UMI
Industrials
|
Large Cap
|
€19.00 | €25.28 | 47.15% | 883.2K | 19.4M |
|
A
Azelis Group NV | AZE
Basic Materials
|
Large Cap
|
€11.41 | €9.85 | -12.68% | 482.2K | 10.6M |
|
P
Proximus | PROX
Communication Services
|
Large Cap
|
€6.52 | €6.68 | 2.61% | 409.8K | 9.0M |
|
S
Solvay SA | SOLB
Basic Materials
|
Large Cap
|
€27.96 | €25.88 | -7.24% | 407.6K | 9.0M |
|
O
Ontex Group N.V | ONTEX
Consumer Defensive
|
Mid Cap
|
€2.92 | €2.61 | -10.31% | 261.5K | 5.8M |
|
B
Bpost SA | BPOST
Industrials
|
Mid Cap
|
€1.81 | €1.80 | -0.55% | 187.1K | 4.1M |
|
O
Onward Medical N.V | ONWD
Healthcare
|
Mid Cap
|
€2.69 | €2.70 | 1.50% | 170.0K | 3.7M |
|
D
Deceuninck NV | DECB
Industrials
|
Mid Cap
|
€2.15 | €2.14 | 0.00% | 87.3K | 1.9M |
|
B
Barco N.V | BAR
Technology
|
Mid Cap
|
€9.56 | €9.20 | -3.36% | 78.2K | 1.7M |
Belgium Sector Performance During May 2026
Industrials
8.79%
18 stocks
Top Performers by Market Cap:
Large Cap:
UMI
+47.15%
Mid Cap:
CFEB
+18.50%
Healthcare
4.40%
12 stocks
Top Performers by Market Cap:
Large Cap:
UCB
+8.87%
Mid Cap:
IBAB
+17.49%
Technology
2.19%
9 stocks
Top Performers by Market Cap:
Large Cap:
MELE
+13.67%
Mid Cap:
ECONB
+9.93%
Financial Services
1.59%
15 stocks
Top Performers by Market Cap:
Large Cap:
KBCA
+4.76%
Mid Cap:
MOPF
+0.00%
Communication Services
0.92%
5 stocks
Top Performers by Market Cap:
Large Cap:
PROX
+2.61%
Mid Cap:
ROU
+3.44%
Real Estate
-0.55%
29 stocks
Top Performers by Market Cap:
Large Cap:
RET
+4.57%
Mid Cap:
WEHB
+1.15%
Consumer Defensive
-3.70%
15 stocks
Top Performers by Market Cap:
Large Cap:
SPA
+9.76%
Mid Cap:
WHATS
+0.70%
Consumer Cyclical
-18.73%
4 stocks
Top Performers by Market Cap:
Large Cap:
DIE
-2.39%
Mid Cap:
VAN
-6.12%
Data is updated regularly. Monthly performance is calculated based on closing prices.