Overview: DAX Performance in May 2025
In May 2025, the DAX showed significant dynamics, with individual stocks recording strong price movements. The analysis of the biggest winners and losers is particularly relevant for investors to better assess opportunities and risks in the current market environment. The DAX itself has developed robustly in the year 2025 so far and was up by +20.7 percent compared to the previous year as of May 20. However, there were also noticeable fluctuations within the index in the month of May.
Biggest Losers in the DAX (May 2025)
The following companies were among the biggest losers of the month (based on Xetra prices between April 30, 2025, and May 30, 2025):
- Sartorius vz: -7.09 %
- Merck: -5.25 %
- Münchener Rückversicherungs-Gesellschaft: -5.02 %
- BASF: -5.00 %
- Allianz: -4.23 %
These values indicate a clear weakness in the areas of biotechnology (Sartorius), pharmaceuticals/chemicals (Merck), insurance/reinsurance (Münchener Rück), and chemicals/basic chemicals (BASF).
Biggest Winners on the Ranking Day
For specific trading days, there are also current top-winner lists. For example, on May 30, the biggest daily winners were:
| Company | Performance (%) |
|---|---|
| Beiersdorf AG | +0.66 |
| Heidelberg Materials | +0.63 |
| Siemens Energy | +0.61 |
| Allianz SE | +0.60 |
| E.ON SE | +0.58 |
Beiersdorf benefited from its defensive character in uncertain markets; Heidelberg Materials from declining financing costs; Siemens Energy from positive impulses from wind power and infrastructure investments; Allianz from stable capital allocation; and E.ON as a defensive supplier with an attractive valuation amid interest rate cut expectations.
Note: The daily winner list does not necessarily reflect the monthly top performers.
Summary
Monthly losers were mainly stocks from defensive sectors like chemicals/pharmaceuticals and insurance/reinsurance – possibly a sign of sector weakness or corrections for overvaluations. Daily winners, on the other hand, benefited from defensiveness or specific market impulses like interest rate cut expectations or infrastructure investments.
A detailed monthly list of the absolute top winners is not explicitly included in the available rankings – they primarily focus on the flops or underperforming values. For investors, it remains important: even within a generally strongly rising index, significant differences exist between individual values – diversification remains crucial for risk distribution.
For a complete monthly winner list, it is advisable to check specialized stock market portals with daily updates.