The DAX index in Frankfurt experienced a 0.5% increase on Tuesday, surpassing the 23,600 mark and recovering from Monday’s downturn. This uptick was driven by worldwide enthusiasm for artificial intelligence, following the announcement of a partnership between Nvidia and OpenAI. Investors were also anticipating insights into future policy directions from U.S. central bank chair Jerome Powell's upcoming economic outlook speech scheduled for later in the day, while simultaneously monitoring the release of new PMI data from Europe’s leading economies.