By Sara Sjolin, MarketWatch

LONDON (MarketWatch) -- European stock markets posted solid gains on Wednesday after better-than-expected Chinese growth data encouraged investors to move back into riskier assets and weak euro-zone inflation added more pressure on the European Central Bank to loosen policy.

The Stoxx Europe 600 index jumped 1.3% to close at 330.82, recovering from its 1% loss on Tuesday, when sentiment was hampered by escalating tensions in Ukraine. The index moved a notch higher in the afternoon when the U.S. markets opened with solid gains after a strong reading on industrial production.

Also helping push the pan-European benchmark higher on Wednesday, shares of Tesco PLC added 2.6% after the supermarket chain reported full-year trading profit ahead of analyst expectations.

Euro-zone inflation at four-year low

More broadly, investors in Europe welcomed euro-zone inflation data confirming consumer prices rose by a meager 0.5% in March. The reading marked the lowest level of inflation since November 2009 and raised speculation the ECB will need to stimulate the economy further to fight the threat of deflation.

ECB President Mario Draghi has repeatedly brushed off fears of regional deflation, but said last weekend that a further rise in the euro could trigger additional monetary easing to keep inflation from falling too low. The euro (EURUSD) is currently trading around $1.3815, and economists fear that an appreciation to $1.40 will hurt exports and dampen the fragile economic recovery in the currency union.

"The ECB would risk losing serious credibility if it did not react to any further fall in euro-zone inflation, marked appreciation in the euro or stalling in the euro zone's economic recovery," said Howard Archer, chief European and U.K. economist at IHS Global Insight, in a note.

China growth data

Outside Europe, investors were also encouraged by Chinese growth data. The gross domestic product in the world's second-largest economy increased by 7.4% in the first quarter, beating forecasts of a 7.3% print, but below the 7.7% seen in the final quarter last year. Economists worry that a sharp slowdown in China's economy -- a so-called hard landing -- would hamper global growth and spark renewed volatility on financial markets.

Meanwhile, China's industrial production grew 8.8% in March, slightly below analyst expectations of 9%. Unexpected weakness in the country's manufacturing sector earlier in the year triggered a sharp selloff in risk assets, particularly in emerging-markets currencies.

"On the whole, bulls [are] taking solace from a case for more stimulus to bolster growth as well as growth not quite tanking either," said Mike van Dulken, head of research at Accendo Markets, in a note.

The conflict in Ukraine has recently kept investors on edge and on Wednesday the tensions escalated further when armored vehicles in the country's east raised Russian flags. Russia's MICEX index , however, closed 0.9% higher at 1,322.60, after sliding 2.5% on Tuesday. Year-to-date the benchmark was still down 12%.

Movers

Elsewhere, Germany's DAX 30 index rose 1.6% to 9,317.82, while France's CAC 40 index gained 1.4% to 4,405.66. The U.K.'s FTSE 100 index advanced 0.7% to 6,584.17.

The U.K. benchmark reacted little to upbeat labor-market data, showing unemployment fell to 6.9% in the three months to February, from 7.2% in January and below forecasts of 7.1%. With the drop, joblessness has fallen below the Bank of England's 7% threshold and likely activates the central bank's new "fuzzy" forward guidance on interest rates.

The pound (GBPUSD)rose to $1.6793 after the data, from $1.6723 late Tuesday. A faster-than-expected improvement in the labor market could make the Bank of England hike interest rates sooner than expected, which would be supportive for the pound.

Among notable stock movers in the European indexes, Sports Direct International PLC jumped 5.6% to 7.88 pounds ($13.19), after Bank of America Merrill Lynch raised its price target on the sports retailer to GBP10.70 a share, from GBP10.

On a more downbeat note, shares of Credit Suisse Group AG (CS) lost 1.5% after the Swiss bank reported first-quarter earnings below analyst expectations.

ASML Holding NV slid 5.3% after the Dutch chip maker cut its first-half guidance slightly to reflect lower demand from some of its clients.

Rémy Cointreau dropped 2.5% after Société Générale cut the drinks maker to sell from hold.

More must-reads from MarketWatch:

Can a bull run without growth leaders?

Asia markets live blog: China GDP in focus

Outside of your house, there's almost no inflation

Subscribe to WSJ: http://online.wsj.com?mod=djnwires

ASML Holding NV (NASDAQ:ASML)
Historical Stock Chart
From Mar 2024 to Apr 2024 Click Here for more ASML Holding NV Charts.
ASML Holding NV (NASDAQ:ASML)
Historical Stock Chart
From Apr 2023 to Apr 2024 Click Here for more ASML Holding NV Charts.