The Dax has regained the 25,000-point level, opening Wednesday morning at 25,038 points with little change from the previous close.
The move marks a quick recovery for the German benchmark, which had slipped below the key psychological threshold just one day earlier.
The index's ability to reclaim the 25,000 mark suggests that selling pressure from Asian markets, which dragged the Dax down 1.2% to 24,851 points on Tuesday, has eased.
However, the flat opening indicates that investors are approaching the start of the second half of the year with caution, unwilling to commit to a strong directional bet immediately.
The 25,000 level has proven to be a critical battleground for the German benchmark in recent weeks.
Previous attempts to sustain gains above this threshold have faltered, highlighting a persistent lack of conviction among buyers.