* Soaring yen dominates world markets
* Stocks, dollar fall
* Oil has $50/barrel in its sights
By Jamie McGeever
LONDON, April 29 (Reuters) - The yen rallied to an 18-month high on Friday as investors wagered the Bank of Japan might be done adding fresh stimulus to the economy, weighing on stock markets around the world.
With Japan on holiday, speculators drove the yen through 107.00 per dollar JPY= for the first time since October 2014.
Often seen as a sign of broader risk aversion among investors, the move coupled with a decline on Wall Street overnight to pushed Asian and European stocks into the red.
U.S. futures pointed to a lower open on Wall Street ESc1 .
"With data continuing to show the economy is stuck in a rut and deflation returning, the last thing the BOJ need to see is a stronger yen," Rabobank analysts wrote in a note on Friday.
"For global markets there are worrying messages here. Conventional monetary policy is at its limits, and, it seems, maybe so is unconventional monetary policy. If so, we are stuck in this environment. This is as good as it gets."
MSCI's broadest index of Asia-Pacific shares outside Japan .MIAPJ0000PUS lost 0.5 percent, on track for a decline of 1.7 percent for the week. That would be its biggest weekly loss in over two months.
The index of 300 leading European shares was down 1.2 percent in early trade at 1,357 points, while the German DAX .GDAXI , France's CAC 40 .FCHI and Britain's FTSE 100 .FTSE were all down around 1 percent too.
Surprisingly strong first quarter growth figures from Spain and France supported the euro, pushing it above $1.14 EUR= . A high exchange rate hurts exporters, however, and European stocks suffered accordingly. quarter U.S. and European earnings reports continued to stream in. Notable was Amazon's AMZN.O upbeat figures that sent the stock up almost 13 percent, easing the gloom after Apple AAPL.O shed 3 percent when billionaire investor Carl Icahn said he no longer has a position in the tech giant. DIP
Japan's Nikkei was closed Friday for the Golden Week holidays which will run into next week, but closed 5.2 percent lower this week.
The yen is up more than 4 percent against the dollar this week, putting it on track for its best week since the depths of the global crisis in October 2008 and one of its best weeks since the 1990s.
It had been at 111.67 yen per dollar before Thursday's surprise decision by the BOJ not to ease policy further.
The dollar remained on the back foot following Thursday's GDP data that showed the U.S. economy virtually ground to a halt in the first quarter, expanding at only at 0.5 percent annualised pace. That was the slowest growth in two years.
The dollar index, a measure of the greenback's value against a basket of currencies, fell 0.4 percent .DXY on Friday and was on course for its third consecutive monthly decline, something not seen for five years.
"The decline in U.S. yields leaves the dollar vulnerable and we remain long euro/dollar, looking for the pair to reach $1.16 in the next two months," BNP Paribas (PA:BNPP) currency strategists said on Friday.
Elsewhere in currency markets China's central bank fixed the yuan 0.5 percent higher on Friday, marking its biggest one-day appreciation since the landmark revaluation in July 2005. CNY=SAEC .
The 10-year U.S. Treasury yield was down slightly on the day at 1.83 percent US10YT=RR , and down around 10 basis points since the Fed's policy meeting on Wednesday.
The reversal in the U.S. dollar proved a boon for most commodities with oil reaching 2016 highs for a third straight session. Brent has climbed nearly 80 percent since hitting 12-year lows of around $27 a barrel in late January. O/R
Brent crude LCOc1 was up 0.5 percent at $48.40 a barrel, poised for a weekly gain of 7percent. U.S. crude CLc1 was also up 0.5 percent at $46.30, on track for an increase of nearly 6 percent for the week.
The two benchmarks are still up 20 percent or more in April, with Brent on track for its largest monthly gain since May 2009.
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https://t.co/YqIYLIbInP Chinese A-shares vs developed and emerging stocks
http://link.reuters.com/rac25w
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