Introduction of TKMS AG & Co KGaA in Xetra trading on 20 October 2025
044/2025 Introduction of TKMS AG & Co KGaA in Xetra trading on 20 October 2025 Xetra Circular 044/25
1. Introduction
As part of the spin-off of TKMS AG & Co KGaA from thyssenkrupp AG, subject to the issuer's admission to the Regulated Market (Prime Standard), we hereby inform you about the procedure for the first price determination on trading venue Xetra (MIC: XETR) for shares of TKMS AG & Co KGaA on 20 October 2025.
First trading day: 20 October 2025
2. Required action
Trading Participants have to make sure that the Product Assignment Group of the new instrument is assigned to their trader groups.
3. Details of the first price determination
The following trading parameters will apply:
Trading model: Continuous Trading
Effective 21 October 2025, TKMS AG & Co KGaA shares will be assigned to the Product Assignment Group GER0.
Please note that the market opening for the TKMS AG & Co KGaA share will take place in parallel to the thyssenkrupp AG share. For details, please refer to the paragraph below or the table with the schedule for the first price determination.
Pre-trading on the first trading day will start from 07:30 CE(S)T. The call phase for the first auction (Opening Auction - Opening Auction Call; display in Xetra: “OpnA”) will start at 08:50 CE(S)T and will last at least 10 minutes. Consequently, the first price determination on Xetra trading will take place not earlier than 09:00 CE(S)T.
The following will apply to the Opening Auction:
During the Opening Auction Call Phase, if the order book is crossed, the indicative auction price, auction volume and auction surplus (volume and side) will be displayed. If the order book is not crossed during the Opening Auction Call Phase, the best bid limit and the best ask limit with their respective volumes will be displayed.
Once the Opening Auction concludes, Continuous Trading will commence.
Please note the following special procedures:
- Orders entered with trading restriction “OAO” (Opening Auction only) will only be considered in the first auction of the exchange trading day, i.e. in the first price determination for the shares. Orders entered with trading restriction “AOO” (Auction only) will be considered in the opening auction, the intraday auction and the closing auction.
- The usual safeguards in Xetra (MIC: XETR) will also be applied in the Opening Auction. Therefore, a volatility interruption may occur following the Auction Call Phase.
- The intraday auction starts at 13:00 CE(S)T and takes at least two minutes.
- If an exceptional number of orders is executed in any one auction, it may lead to delays in processing confirmations.
- Moreover, the “Market Model for the Trading Venue Xetra®” applies.
Treatment regarding the MDAX® index:
Following the spin-off of TKMS AG & Co KGaA from thyssenkrupp AG, an adjustment to the index is required. On 20 October 2025, TKMS AG & Co KGaA will be included in the MDAX® for one day. This adjustment ensures the trackability of the index for investors.
On 20 October 2025, after close of trading, the TKMS AG & Co KGaA share will be removed from the MDAX® index and the weighting of the thyssenkrupp AG share will be adjusted accordingly.
Schedule for the first price determination for shares of TKMS AG & Co KGaA on 20 October 2025 on trading venue Xetra (MIC: XETR):
* CE(S)T = Central European (Summer) Time. The actual changes of trading phases in the Xetra trading system are decisive.
Further information