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 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.

US futures

US futures pointed to a lower open on Wall Street.

“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.”

Asia-Pacific shares

MSCI’s broadest index of Asia-Pacific shares outside Japan lost 0.5 per cent, on track for a decline of 1.7 per cent 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 per cent in early trade at 1,357 points, while the Germany’s DAX, France’s CAC 40 and Britain’s FTSE 100 were all down around 1 per cent too.

Surprisingly strong first quarter growth figures from Spain and France supported the euro, pushing it above $1.14. A high exchange rate hurts exporters, however, and European stocks suffered accordingly.

First quarter US and European earnings reports continued to stream in. Notable was Amazon’s upbeat figures that sent the stock up almost 13 per cent, easing the gloom after Apple shed 3 per cent when billionaire investor Carl Icahn said he no longer has a position in the tech giant.

Dollar dip

Japan’s Nikkei was closed on Friday for the Golden Week holidays which will run into next week, but closed 5.2 per cent lower this week.

The yen is up more than 4 per cent 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.

US GDP data

The dollar remained on the back foot following Thursday’s GDP data that showed the US economy virtually ground to a halt in the first quarter, expanding at only at 0.5 per cent 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 per cent on Friday and was on course for its third consecutive monthly decline, something not seen for five years.

“The decline in US 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 currency strategists said on Friday.

Elsewhere in currency markets China’s central bank fixed the yuan 0.5 per cent higher on Friday, marking its biggest one-day appreciation since the landmark revaluation in July 2005.

The 10-year US Treasury yield was down slightly on the day at 1.83 per cent, and down around 10 basis points since the Fed’s policy meeting on Wednesday.

Crude oil

The reversal in the US 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.

Brent crude was up 0.5 per cent at $48.40 a barrel, poised for a weekly gain of 7per cent. US crude was also up 0.5 percent at $46.30, on track for an increase of nearly 6 per cent for the week.

The two benchmarks are still up 20 per cent or more in April, with Brent on track for its largest monthly gain since May 2009.