- Asia's stocks rose as strong technology earnings boosted Wall Street. The yen swung wildly ahead of the BoJ's first policy decision under its new governor.

- Following the greatest day for the S&P 500 since the first week of the year and a 2.8% increase for the tech-heavy Nasdaq 100, stocks in Japan, Australia, South Korea, and China all climbed.

- The gains, though, began to fade in early Asian trade. Futures in the United States fell significantly after Amazon warned of a slowing in revenue growth for its cloud computing sector.

- After a Nikkei report that the BoJ will alter its forward guidance and analyse the effects of monetary easing in its policy decision on Friday, the yen fluctuated between gains and losses. The central bank is unlikely to change its yield-curve-control policy, according to the Nikkei, without attribution.