European stocks closed stable on Wednesday amid mixed earnings reports, with a decline in shares of French payments company Worldline offset by encouraging results from Dassault Systèmes and Deutsche Bank. The Stoxx 600 index reversed earlier losses and closed flat, with mining stocks leading the gains, rising by 0.9%. The interest-rate-sensitive real estate sector led the declines, falling by 1.9%. Worldline's shares dropped to a record low, plummeting 59.2% after the French payment firm lowered its annual targets, citing an economic slowdown that has hurt its business. Meanwhile, shares of French software company Dassault Systèmes rose by 8% after it raised its full-year profit target, and Deutsche Bank's shares increased by 8.2% as it promised more stock buybacks next year and surpassed third-quarter revenue estimates.