US Stock Futures Down, Focus on G-20 meeting and Quadruple Witching

US stock futures exhibited weakness today, indicating that the markets may begin largely even or sparingly lower at the opening bell. Investors are getting prepared for quadruple witching; the expiration of four different types of futures and options contracts, which may result in a volatile session today. A key G-20 meeting, which will be held next week, also remained in focus. The Dow Jones Industrial Average futures fell 1 point to 10364. While futures for the S&P 500 dropped 1.2 points to 1110.50, those for the Nasdaq 100 slipped 0.5 points to 1909.25. The markets are likely to be weighed down by the news of the forthcoming G-20 meeting in Toronto on June 26-27, with the EU standing united against China, Brazil and Canada. The financial tax and regulation proposals being presented currently also seem to render a bearish touch to the markets. Stocks likely to be in focus include BP PLC BP and Sanofi-Aventis SNY. While shares of BP climbed more than 3% in the pre-market session, SNY shares slipped almost 5%. Read more from Benzinga's Markets.