European stocks opened higher on Wednesday, amid optimism over economic reopenings and speculation that the European Union will announce a massive stimulus program. The Stoxx Europe 600 index /zigman2/quotes/210599654/delayed XX:SXXP -0.84% rose 0.4% to 350.36, the German DAX /zigman2/quotes/210597999/delayed DX:DAX -0.80% rose 0.3% and the French CAC 40 /zigman2/quotes/210597958/delayed FR:PX1 -0.96% rose 0.5%. The European Commission is due to present its proposal for a bailout package, potentially backing efforts by France and Germany for a 500 billion euro fund to aid recovery efforts. Airline and travel shares extended Tuesday's gains, with International Consolidated Airlines Group SA /zigman2/quotes/208070069/delayed UK:IAG -3.04% up over 6% and TUI AG /zigman2/quotes/207049334/delayed UK:TUI -5.54% climbing 12%. U.S. stock futures indicated a stronger start for Wednesday, with Dow /zigman2/quotes/210598065/realtime DJIA +2.13% futures up over 150 points.