* Graphic: World FX rates in 2018 tmsnrt.rs/2egbfVh
* U.S. stocks rise, MSCI world index up, but still down for week
* Euro rises after German, French business activity data
* Trade concerns continue; oil rises sharply on OPEC news (Updates to U.S. close; adds comments)
By Sinéad Carew
NEW YORK, June 22 (Reuters) - World shares rose on Friday but still registered their biggest weekly decline in three months on continuing global trade tensions, while oil prices surged after OPEC decided on only modest increases in crude production.
U.S. Treasury yields were little changed as risk appetite improved a bit though investors remained cautious over a trade conflict with China.
The euro rose on improved regional growth data and assurances by Italian politicians that Italy would not leave the single currency.
The pan-European FTSEurofirst 300 index rose 1.18 percent. MSCI's gauge of stocks across the globe gained 0.49 percent for the day, but for the week fell 1 percent in its biggest weekly drop in three months.
"The market's saying we're a little nervous about a trade war but we really don't think there will be one," Gail Dudack, chief investment strategist at Dudack Research Group, said. "Nothing major has happened today so the market is rebounding having discounted a lot of trade fears already."
On Wall Street, the Dow Jones Industrial Average rose 119.19 points, or 0.49 percent, to 24,580.89 snapping an eight-day losing streak. The S&P 500 gained 5.12 points, or 0.19 percent, to 2,754.88, and the Nasdaq Composite dropped 20.14 points, or 0.26 percent, to 7,692.82.
"It's not like stocks are getting a major bounce. It's a little stop of the bleeding. We're taking our breath and focusing on the oil market," said Ryan Detrick, senior market strategist at LPL Financial in Charlotte, North Carolina. "Oil is the bigger story today with the OPEC news."
The energy sector was the biggest gainer of the benchmark S&P 500 index, rising 2.2 percent, while the technology sector was the weakest with a 0.4 percent drop.
Oil prices rose sharply after OPEC agreed to only a modest increase in output, well below some of the figures that had been discussed ahead of the meeting.
"There was a lot of anticipation in the market that there was going to be a lot of new oil coming to market, and that isn't going to happen, at least for now," said John Kilduff, a partner at Again Capital.
U.S. crude rose 5.77 percent to $69.32 per barrel and Brent was last at $75.61, up 3.5 percent on the day.
Investors grew more nervous this week about the possibility of a full-blown trade war due to increasingly sharp rhetoric between the United States and China, and growing evidence of the wider economic impact of the conflict.
Chinese state media said on Friday that U.S. protectionism was self-defeating and a "symptom of paranoid delusions" that must not distract China.
European carmakers' shares fell sharply after U.S. President Donald Trump threatened to impose a 20 percent tariff on all European Union-assembled cars imported into the United States, if EU "tariffs and trade barriers" are not removed. Trump's threat, made in a tweet, followed the EU's announcement that it would place duties on a range of U.S. products.
The euro rose after IHS Markit data showed business activity in Germany and France, the euro zone's top two economies, picked up in June despite U.S.-Europe trade tensions.
The dollar index, which tracks the dollar against six major currencies, fell 0.22 percent. The euro was up 0.5 percent to $1.1659.
The Japanese yen strengthened 0.01 percent versus the greenback, at 110.00 per dollar. The Mexican peso gained 1.45 percent versus the U.S. dollar, at 20.03.
Benchmark 10-year notes last /32 in price to yield 2.8967 percent, from 2.897 percent late on Thursday.
The 30-year bond last rose 3/32 in price to yield 3.0386 percent, from 3.043 percent late on Thursday. (Additional reporting by Jessica Resnick-Ault, Andres Guerra Luz and Chuck Mikolajczak in New York, Ritvik Carvalho in London; Editing by David Gregorio and Leslie Adler)