Netherlands: Monthly Stock Market Performance Insight - September 2025

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Monthly Gainers

103

Monthly Losers

103

Average Return

4.99%

Total Stocks

219

View Detailed Market Cap Breakdown

Market Cap	Monthly Gainers	Monthly Losers	Average Return	Total Stocks
Large Cap	29	23	1.10%	53
Mid Cap	13	14	-0.74%	29

Monthly Streak Leaders for September 2025

All (10) Large Cap (4) Mid Cap (4) Small Cap (2)

Stock	Streak	Streak Return
P Prosus N.V \| PRX Communication Services \| Large Cap	5 months ↑	44.09%
Prosus N.V gains traction with a 5-month winning streak (41.60 → 59.94), delivering 44.1% gains. With 740.0M revenue generating only 1.1B profit (147.6% margin) in Qtr ending Sep 2019, the market prices in future margin expansion potential.
A Argenx SE \| ARGX Healthcare \| Large Cap	3 months ↑	31.60%
Argenx SE starts to shine with a 3-month winning streak (469.00 → 617.20), delivering 31.6% gains. With 809.7M revenue generating only 209.6M profit (25.9% margin) in Qtr ending Jun 2025, the market prices in future margin expansion potential.
H Heineken N.V \| HEIA Consumer Defensive \| Large Cap	5 months ↓	-16.16%
HEIA under pressure with 5 straight negative months, declining 16.16%.
I IMCD N.V \| IMCD Basic Materials \| Large Cap	4 months ↓	-25.14%
IMCD under pressure with 4 straight negative months, declining 25.14%.
A AMG Critical \| AMG Basic Materials \| Mid Cap	6 months ↑	100.00%
AMG Critical shows consistent strength with a 6-month winning streak (14.34 → 28.68), delivering 100.0% gains. With 374.9M revenue generating only 10.6M profit (2.8% margin) in Qtr ending Jun 2025, the market prices in future margin expansion potential.
N Nedap N.V \| NEDAP Technology \| Mid Cap	5 months ↑	52.99%
NEDAP maintains strong performance with 5 straight positive months, gaining 52.99%.
A AFC Ajax N.V \| AJAX Communication Services \| Mid Cap	5 months ↓	-4.80%
AJAX under pressure with 5 straight negative months, declining 4.80%.
N Nx Filtration N.V \| NXFIL Industrials \| Mid Cap	4 months ↓	-34.88%
NXFIL under pressure with 4 straight negative months, declining 34.88%.
P Playa Hotels \| PLYA Consumer Cyclical \| Small Cap	3 months ↑	1.13%
Playa Hotels gains traction with a 3-month winning streak (13.33 → 13.48), delivering 1.1% gains. The financials tell a compelling story: 267.3M revenue generating 43.1M net profit (16.1% margin) demonstrates exceptional profit margins as of Qtr ending Mar 2025.
P Pharming Group N.V \| PHAR Healthcare \| Small Cap	1 months ↓	5.76%
Pharming Group N.V consolidates with a 1-month decline (13.71 → 14.50), down 5.8%. Weak margins on 93.2M revenue with only 4.6M profit (4.9% margin) in Qtr ending Jun 2025 validate market skepticism. Structural improvements needed before sentiment shifts.

Netherlands Market Monthly Gainers & Losers: September 2025

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

Top Netherlands Stock Gainers (September 2025)

Stock	Month Open	Month Close	Monthly Change	Avg Daily Volume	Month Volume
T Theon International \| THEON Industrials \| Large Cap	€24.45	€32.50	30.52%	271.7K	6.0M
A ASML Holding N.V \| ASML Technology \| Large Cap	€626.60	€828.10	30.08%	705.0K	15.5M
A ASM International \| ASM Technology \| Large Cap	€406.90	€510.80	24.37%	165.2K	3.6M
P Prosus N.V \| PRX Communication Services \| Large Cap	€52.96	€59.94	13.50%	2.3M	51.4M
A ABN AMRO Bank N.V \| ABN Financial Services \| Large Cap	€24.69	€27.25	10.55%	2.4M	53.6M
H Hydratec Industries \| HYDRA Industrials \| Mid Cap	€169.00	€189.00	11.83%	72	1.6K
A AMG Critical \| AMG Basic Materials \| Mid Cap	€26.16	€28.68	9.22%	249.9K	5.5M
K Kendrion N.V \| KENDR Industrials \| Mid Cap	€13.10	€14.10	8.46%	32.4K	711.8K
P PostNL N.V \| PNL Industrials \| Mid Cap	€0.96	€1.04	8.33%	2.9M	64.7M
F Fastned B.V \| FAST Consumer Cyclical \| Mid Cap	€20.85	€22.60	7.88%	17.1K	376.5K

Biggest Netherlands Stock Losers (September 2025)

Stock	Month Open	Month Close	Monthly Change	Avg Daily Volume	Month Volume
F Fugro N.V \| FUR Energy \| Large Cap	€11.79	€9.09	-22.84%	816.9K	18.0M
I InPost S.A \| INPST Industrials \| Large Cap	€12.36	€10.45	-15.79%	1.4M	30.9M
C CVC Capital Partners \| CVC Financial Services \| Large Cap	€16.99	€14.82	-14.09%	759.9K	16.7M
D DSM-Firmenich AG \| DSFIR Basic Materials \| Large Cap	€83.46	€72.52	-13.15%	726.8K	16.0M
R Randstad N.V \| RAND Industrials \| Large Cap	€40.39	€36.17	-10.45%	397.7K	8.8M
O OCI N.V \| OCI Basic Materials \| Mid Cap	€4.88	€3.94	-19.26%	1.0M	22.1M
E Envipco Holding N.V \| ENVI Industrials \| Mid Cap	€7.60	€6.28	-16.49%	48.1K	1.1M
Y Younited Financial \| YOUNI Financial Services \| Mid Cap	€8.35	€7.25	-13.17%	43	948
N Nx Filtration N.V \| NXFIL Industrials \| Mid Cap	€3.07	€2.80	-8.50%	70.4K	1.5M
A Azerion Group N.V \| AZRN Communication Services \| Mid Cap	€1.38	€1.29	-6.52%	30.1K	661.7K

Most Active Netherlands Stocks During September 2025

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

Stock	Month Open	Month Close	Monthly Change	Avg Daily Volume	Monthly Volume
P Pharming Group N.V \| PHARM Healthcare \| Mid Cap	€1.25	€1.24	-0.80%	17.5M	385.0M
K Koninklijke KPN N.V \| KPN Communication Services \| Large Cap	€4.09	€4.09	0.25%	8.5M	187.4M
I ING Groep N.V \| INGA Financial Services \| Large Cap	€20.47	€22.08	8.45%	7.8M	171.0M
A Aegon \| AGN Financial Services \| Large Cap	€6.72	€6.83	1.64%	5.6M	122.2M
S Shell plc \| SHELL Energy \| Large Cap	€31.57	€30.47	-3.55%	5.2M	114.6M
P PostNL N.V \| PNL Industrials \| Mid Cap	€0.96	€1.04	8.33%	2.9M	64.7M
A ABN AMRO Bank N.V \| ABN Financial Services \| Large Cap	€24.69	€27.25	10.55%	2.4M	53.6M
O OCI N.V \| OCI Basic Materials \| Mid Cap	€4.88	€3.94	-19.26%	1.0M	22.1M
A AMG Critical \| AMG Basic Materials \| Mid Cap	€26.16	€28.68	9.22%	249.9K	5.5M
B B&S Group S.A.R.L \| BSGR Industrials \| Mid Cap	€5.89	€5.91	0.17%	225.2K	5.0M