Siltronic AG has been readmitted to the MDAX stock index as of June 22, 2026, following a positive development in its free-float market capitalization over recent months. The company, which also remains a constituent of the TecDAX, is now once again among the 50 largest publicly listed mid-cap companies in Germany, according to a press release.
The inclusion results from Deutsche Börse AG’s regular quarterly review, where the key criterion is free-float market capitalization—the market value of shares available for trading. Siltronic’s return to the MDAX reflects growing investor confidence in the company’s strategic positioning and long-term growth prospects.
Dr. Michael Heckmeier, CEO of Siltronic AG, stated, "We are very pleased to be readmitted to the MDAX. This is a strong vote of confidence from the capital markets in our strategy and our long-term growth prospects, which are driven by global megatrends such as artificial intelligence."
Siltronic is a leading provider of high-tech wafer solutions, which are the foundation of the semiconductor industry. Wafers are essential for chips used in servers, computers, smartphones, electric cars, wind turbines, and other digital applications. The company operates production facilities in Asia, Europe, and the US, employing around 4,300 people worldwide.
The significance of this index readmission extends beyond Siltronic itself. As artificial intelligence continues to drive demand for advanced semiconductors, companies like Siltronic that supply critical components stand to benefit. The inclusion in the MDAX may enhance Siltronic’s visibility among institutional investors, potentially leading to increased liquidity and investment.
For industry leaders, Siltronic’s return to the MDAX signals the ongoing importance of semiconductor infrastructure in powering AI and other technologies. The company’s focus on operational excellence and innovation positions it to capitalize on the growth in digitalization and electrification trends.
Investors and analysts will be watching Siltronic’s performance closely, as its index membership could influence trading dynamics and serve as a bellwether for the mid-cap semiconductor sector. The company’s dual listing in both MDAX and TecDAX also underscores its technology focus and market valuation.
Siltronic AG shares have been listed in the Prime Standard of the German Stock Exchange since 2015. For more information, visit Siltronic's website.
