Ahead of important economic data later in the week, Dax investors are initially staying on the sidelines on Monday.

The leading German index opened little changed at 18,163 points despite strong data on German production. "Trading is likely to remain nervous ahead of the US inflation data on Wednesday, as there were signals from the US Federal Reserve last week that interest rate cuts could be canceled altogether this year if inflation does not continue to fall," warned analyst Jochen Stanzl from broker CMC Markets.

Investors are also eagerly awaiting the meeting of the European Central Bank (ECB) on Thursday. On Friday, foreign trade data from Germany's most important trading partner China and the first quarterly reports from the major US banks are also due. These herald the start of the new balance sheet season. Monday's calendar, on the other hand, is largely empty.

Tui was in the spotlight among the companies. Around ten years after switching to the London Stock Exchange, Europe's largest travel group returned to Germany with its main listing. The share price rose by 1.4 percent to 7.73 euros at the start of trading in Frankfurt. The shares of online fashion retailer Zalando and chemicals group Wacker Chemie were also in demand, rising by 4.2 and 3.7 percent respectively following upgrades. Borussia Dortmund shares, on the other hand, fell 2.7 percent after the home defeat against VfB Stuttgart.

(Report by Zuzanna Szymanska, edited by Christian Götz. If you have any questions, please contact our editorial team at berlin.newsroom@thomsonreuters.com (for politics and the economy) or frankfurt.newsroom@thomsonreuters.com (for companies and markets).)