The DAX 40 closed about 1% down at 24,937 on Tuesday, following yesterday's advance, dragged by tech-related stocks amid concerns over AI firms' capital expenditures and prospective Fed rate hikes. Meanwhile, investors also monitored progress on US-Iran negotiations, including the 60-day license granted by the US allowing Iran to sell its oil on the international market. The chip segment was the hardest hit, with Infineon Technologies sliding over 6%. The construction company Hochtief (-4.3%) and Siemens Energy (-3.9%) also posted steep losses. Both had benefited significantly from the massive investments in data centers in recent months. Vonovia shares dropped 2.9% following the announcement of a convertible bond issue. On the upside, heavyweight SAP and Airbus were the top gainers, adding nearly 2% each. Utility RWE rose marginally after announcing a €4 billion capital raise for a majority stake in Amprion. It also plans to invest €6.5 billion by 2031 in Germany’s grid expansion.