The euro fell a full cent against the dollar and government borrowing costs dropped on Thursday, after the European Central Bank vowed not to raise euro zone interest rates before the middle of next year.
The bank said it was pulling the plug on its €2.55 trillion stimulus programme but after the Federal Reserve raised US interest rates for the second time this year on Wednesday the ECB rate promise came as a relief.
The pan-European STOXX 600 index raced back into positive territory after a morning in the red, though basic resources stocks stayed down more than 1% after weak data from big metals consumer China.
Germany's DAX and France's CAC40 led the stocks rebound, while the euro tumbled back towards $1.17 from well over $1.18. Euro zone government borrowing costs slid too as traders recalibrated prices for a longer period of sub-zero ECB rates.
"The Governing Council expects the key ECB interest rates to remain at their present levels at least through the summer of 2019 and in any case for as long as necessary (to get inflation back to near 2%)," the ECB said.
Germany's Bunds were offering 0.46% compared with 0.49% before the ECB statement.
US Treasuries meanwhile were down to 2.94% having briefly topped 3% overnight after the Federal Reserve had pushed up its interest rates.
"I think its pragmatic for the Fed to take these moves, because if you are not going to make them now, when are you going to take them?" Kully Samra, European managing director at $3 trillion US asset manager Charles Schwab, said.
The ECB had probably been too slow to reduce stimulus, Samra added, though recent weaker data showed Europe still had underlying issues.
His biggest complication is the increasingly murky economic European outlook, a developing trade war with the United States, a populist challenge from Italy's new government and softening export demand.
Trade tensions
Also keeping investors in check were concern about US threats to impose tariffs on $50 billion of Chinese goods. US President Donald Trump will meet with his trade advisers later to decide whether to activate the tariffs, a senior administration official said on Wednesday.
In Asia, surprisingly soft Chinese retail sales and investment data had also hit sentiment. China's central bank then left its interest rates on hold, rather than follow the Fed as it sometimes does.
MSCI's broadest index of Asia-Pacific shares outside Japan lost 1%.
Shares in South Korea and Taiwan fell over 1.8 and 1.4%, Japan's Nikkei dropped 1% while mainland China's Shanghai composite index hit a 20-month closing low.
Another event markets were gearing up for was the start of soccer's World Cup in Russia. Russia's timezones mean there will be more matches during European or US and Latin American trading hours than any previous tournament.
A study done during the last one with similarly timed games, the 2010 finals in South Africa, showed trading volumes on share markets dropped by a third on average when matches were on and 55% when a market's own team played.
US retail sales figures were also due too. S&P 500 and Dow Jones and Nasdaq futures were lifted by the ECB's signals and all pointed to slightly higher restart having been lower earlier.
It saw the dollar kick up a full cent against the euro to $1.1721 and a more modest few pips to 110.13 yen after earlier falling from a post-Fed three-week high of 110.85.
The dollar index, which tracks it again six top currencies, was swung round to stand 0.3% high having been down 0.4%.
Among commodities, China-sensitive industrial metals sagged but gold and other precious metals made ground.
Oil prices were little changed, underpinned by a bigger-than-expected decline in US crude inventories and surprise drawdowns in gasoline and distillates, which indicated strong demand in the world's top oil consumer.
Brent and US crude futures traded at $76.63 and $66.89 a barrel respectively, to extend their recovery from eight-week lows touched last week.