DAX Closes Marginally Down

Frankfurt's DAX 40 reversed somer early gains to close marginally down at 25,251 on Tuesday, snapping a two-day winning streak, pressured by renewed concerns over AI spending, while oil prices trimmed their losses. Meanwhile, major US banks delivered mixed results at the start of the earnings season. The tech sector was among the weakest performers, with chip maker Infineon Technologies dropping over 4% amid concerns over new Chinese competition.