DAX edges higher as investors eye NVIDIA results and Fed speech

The DAX opened 0.38% higher at 26,206.01 points on Tuesday, with investors cautiously buying ahead of key events this week. The index remains focused on the 26,000 mark as sentiment stays positive. NVIDIA's quarterly results on Wednesday and Federal Reserve Chair Kevin Warsh's speech at Jackson Hole on Friday are expected to drive market direction. Investors are selling AI-related tech stocks defensively, following weak US cues, while falling oil prices supported indices. The US signaled a shift toward an "economic war" isolating Iran, though markets showed little reaction. Rising gas prices from the Strait of Hormuz blockade may pressure European margins and influence ECB policy, with the ifo index due today.