Fluidstack, a British startup selling cloud-computing services for artificial intelligence, is in talks with investors to raise up to $200 million in Series A financing, according to people familiar with the matter.The discussions began shortly before the company announced plans to build a €10 billion ($10.4 billion) “supercomputer” in France, said the people, who spoke on condition of anonymity to discuss private information. The data center facility is expected to open in 2026 and have a gigaw...