The S&P 500 is set to break a four-day streak of losses, as US stocks opened higher Wednesday. The S&P 500 losing streak is the index's longest since May.
US stocks closely watched as S&P breaks through key technical level. Futures suggest a slight rise in US stocks at the open.
Facebook shares close down $4.20 in Monday trading. Facebook stock dropped so much Monday morning that 'circuit breakers' kicked in to restrict sell orders.