As panic ensued when the Dow crashed to 1,000 points Monday right after the opening bell, some investors complained on Twitter that they weren't able to log into their online stock accounts.
Former U.S. Treasury Secretary Larry Summers claims that the aggressive sell-off on the global markets can lead to "a very serious situation" and raising interest rates could be a big mistake.
The S&P 500 and Nasdaq Composite rose on Wednesday following three days of losses as tech shares advanced, while the blue-chip Dow index ticked lower, weighed by Disney's largest daily drop in almost seven years.
U.S. stocks jumped on Wednesday, helped by gains in technology and financial shares and optimism that Greece may be closer to reaching a deal with creditors.
U.S. stocks ended marginally lower on Wednesday after Wall Street saw little in the minutes from last month's Federal Reserve meeting to alter expectations of when the central bank will raise interest rates.
U.S. stock indexes ended more than 1 percent higher on Friday after strong jobs data indicated U.S. economic growth was picking up momentum, but not enough to raise concerns about an earlier-than-expected interest-rate rise by the Federal Reserve.
The Dow and S&P 500 ended a volatile session higher on Tuesday, helped by strong earnings from Merck and gains in IBM after it boosted its dividend, while the Nasdaq fell with Apple.
U.S. stocks climbed more than 1 percent on Monday, rebounding from a sharp decline last week, helped by deal activity in healthcare and a bounce in energy shares.
U.S. stock index futures climbed on Friday after a one-day pullback as investors were reassured by a reform pledge by Greece to its EU creditors that could help avert a cash crunch.
Apple Inc (AAPL.O), the largest U.S. company by market value, will join the Dow Jones industrial average .DJI, replacing AT&T Inc (T.N), in a change that reflects the dominant position of the iPhone maker in the U.S. consumer economy.
U.S. stocks closed lower on Friday and the S&P 500 declined for a second straight week after a strong monthly jobs report as investors bet that the Federal Reserve could raise interest rates sooner than previously expected.
The S&P 500 posted its best monthly gain since October 2011 on Friday, but U.S. stocks ended lower for the day as U.S. economic growth slowed more sharply than initially thought in the fourth quarter.
Asian stock markets were subdued on Wednesday while major currencies barely budged as looming euro zone meetings to discuss the Greek debt crisis overshadowed a firmer finish on Wall Street.
Wall Street stocks fell on Friday as a better-than-expected U.S. jobs report raised expectations that the Federal Reserve will increase interest rates by midyear, while renewed worries over Greece's debt negotiations added to the bearish tone.
Most Asian share markets firmed on Tuesday and the euro clung to rare gains, relieved that European equities had weathered Greece's election outcome without too much disruption.