U.S. stock futures drift higher on Europe optimism
Facebook in focus as investor Thiel sells 20 million shares
FRANKFURT (MarketWatch) — U.S. stock index futures posted small gains Tuesday, drifting higher as European markets rallied on growing hopes the European Central Bank will step in to pull down borrowing costs for troubled euro-zone governments and contain the region’s debt crisis. http://www.marketwatch.com/story/us-stock-fut...beforebell