U.S. software stocks fell on Thursday after SAP's cautious cloud outlook and a post-earnings drop in ServiceNow ​shares reinforced investor concerns about mounting competition from artificial intelligence-related ‌companies. ServiceNow dropped 9.6% despite forecasting annual subscription revenue above Wall Street estimates. The double-whammy dragged Salesforce shares down 5.6%, while Photoshop maker Adobe and ‍cloud security firm Datadog fell 3.1% each.