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Opening: Principle of highest executable volume used for Start of Trading

The opening of an exchange day takes the form of an auction, with the opening price established in accordance with the principle of highest executable volume.

The following conditions must be fulfilled at opening:

  • The price must be determined in such a way that the greatest trading volume can be achieved.
  • All market orders must be executed.

Opening of individual trading segments

Opening is as per the trading hours. The Exchange System determines when each segment opens by selecting a random time within a two-minute slot.

Opening of trading in different securities

If, during opening, there are no trades in the respective securities, there is no official opening price for the day in question.

With certain securities, the following cases may arise: