The thyssenkrupp spin-off will go public on October 28 and will be included in the MDAX for one day.October 26, 2026. FRANKFURT (Stoxx). Following the spin-off of tk accelis Group AG & Co. KGaA from thyssenkrupp AG, an index adjustment is necessary. tk accelis Group AG & Co. KGaA will be included in the MDAX for one day on October 28, 2026. This adjustment ensures that the index remains representative for investors. The MDAX will thus be calculated with 51 constituents for one day.In accordance with Rule 8.4 of the DAX Equity Index Calculation Guide (Spin-offs), the free float factor isRemoved Added - tk accelis Group AG & Co. KGaA Details are available in the guide on stoxx.com (PDF)Who’s in, who’s out: The process for index adjustments26. Oktober 2026 © Deutsche Börse AG