Siltronic AG returns to the MDAX after a period in the TecDAX
Siltronic AG, a German semiconductor equipment manufacturer, has re‑entered the MDAX index on 22 June 2026, following a temporary inclusion in the TecDAX. The change was announced through a series of regulatory filings under § 40 Abs. 1 WpHG, as reported by eqs‑cockpit.com and www.finanzen.net . The announcement was made at 11:02 CET/CEST, indicating the company’s compliance with the disclosure requirements for European market participants.
Context of the index change
Siltronic’s move back to the MDAX comes after a period of heightened volatility in the German technology sector. On 23 June 2026, the TecDAX experienced a decline of 1.19 % to 3 923,59 points, while the broader MDAX fell 1.35 % to 32 133,31 points. Market commentary from www.finanzen.net highlighted the negative sentiment across technology stocks, with analysts noting the potential for a broader correction.
The re‑inclusion in the MDAX is significant for Siltronic, as it aligns the company with a larger index that encompasses medium‑cap German firms. This change may improve liquidity for the stock and enhance its visibility among institutional investors who track the MDAX as a benchmark.
Financial overview
- Market Capitalisation: €2.92 billion
- Closing price (2026‑06‑21): €96,30
- 52‑week high: €108,80 (2026‑05‑28)
- 52‑week low: €31,70 (2025‑09‑10)
- Price‑earnings ratio: –22,81 (negative due to current earnings shortfall)
Siltronic’s negative P/E reflects its ongoing investment in research and development for hyper‑pure silicon wafers, a core product for high‑performance electronic devices worldwide.
Investor perspective
A recent article on www.finanzen.net (23 June 2026) quantified the potential gains for investors who had entered the market a year earlier. The piece suggested that an early investment in Siltronic would have yielded substantial returns, underscoring the company’s recent performance rebound. While the article does not provide specific figures, the implication is that the stock’s upward trajectory has been noteworthy.
Conclusion
Siltronic AG’s return to the MDAX marks a strategic shift that may enhance its market profile and attract new institutional interest. The company’s robust product portfolio in the semiconductor equipment sector, combined with the recent price recovery, positions it as a focal point for investors monitoring the German technology landscape.




