Shares on both sides of the Atlantic rose overnight as investors picked up some bargains following a two-day Brexit-inspired rout amid expectations that central banks will follow through on their promise to help if needed.
Europe's Stoxx 600 Index finished the day with an advance of 2.6 percent from the previous close. Germany's DAX index rose 1.9 percent, the UK's FTSE 100 index rallied 2.6 percent, while France's CAC 40 index also added 2.6 percent.
"Stocks are rebounding on the expectation that there will be a coordinated intervention by central banks," John Plassard, a senior equity-sales trader at Mirabaud Securities in Geneva, told Bloomberg. "What central banks can do is put confidence back in the market by telling everyone that they are here and ready to act. If we don't get that sort of support, we'll see further declines."
Wall Street also rose. In 2.49pm New York trading, the Dow Jones Industrial Average gained 1.1 percent, while the Nasdaq Composite Index rallied 1.8 percent. In 2.34pm trading, the Standard & Poor's 500 Index climbed 1.2 percent.
"This is a very volatile and churning environment," Eric Wiegand, senior portfolio manager at US Bank in New York, told Reuters. "It's not going to be the blank summer months that we had grown accustomed to."