Stocks on both sides of the Atlantic gained, pushing the Standard & Poor's 500 Index to a record high, after the European Central Bank reduced borrowing costs, while US unemployment claims posted a surprise decline.
And Warren Buffett, the 82-year-old billionaire, sent his first tweet-and then promptly attracted followers at an initial rate of about 1,000 a minute.
The key news was the ECB dropping its deposit rate to a record low 0.5 per cent from 0.75 per cent after policy makers met today-and a hint it was open to the idea of a negative rate-to help stem further deterioration in the euro zone economy.
Indeed, the region's manufacturing output shrank in April for a 21st consecutive month, according to Markit Economics data.
"The cut in interest rates should contribute to support prospects for a recovery later in the year," ECB president Mario Draghi said in a statement. "Against this overall background, our monetary policy stance will remain accommodative for as long as needed."