Nvidia’s market cap takes a $600bn battering – the biggest one-day Wall Street wipe-out in history. The emergence of DeepSeek sees $1tn knocked off big tech stocks amid a market panic reverberating in Japan and in European AI-related shares. In Germany, Siemens attempts to stem losses from the sell-off with preliminary Q1 revenue narrowly beats forecasts at €9bn. German cloud-computing giant SAP boosts guidance on the back of a strong AI-driven Q4 order pipeline. And President Trump touts Microsoft as a potential company to acquire social media platform TikTok.

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