Wealth Management and software firms such as SAP and Dassault Systemes plunged at the European market open. This followed a similar move on Wall Street after a tax-strategy AI tool rolled out Altruist sent shares of financial services firms and wealth managers lower in US trading hours. Elsewhere, sources said Elliot Investment Management has built a stake in London Stock Exchange Group as the FTSE 100 index owner grapples with disruption from artificial intelligence and a plunge in listings.