The London Stock Exchange Group. The Financial Times reported that the group had plans for a blockchain-based digital assets business. Photograph: Tolga Akmen/AFP European shares ended flat on Monday as gains driven by optimism around China’s stimulus measures to revitalise its economy fizzled out, while Danish drugmaker Novo Nordisk’s shares touched record highs. Stock market momentum was subdued as Wall Street was closed for a holiday. Dublin The Iseq index slipped 0.4 per cent on a quiet Monday. Ryanair edged 0.1 per cent higher after it said it flew a record 18.9 million passengers in August, up from 16.9 million...