Yen Tumbles Most in 17 Months as BOJ Doubles Stimulus

The yen tumbled the most in 17 months against the dollar after the Bank of Japan outstripped forecasts and announced unprecedented economic stimulus measures that tend to devalue the currency.

The euro rose versus the dollar after the European Central Bank held interest rates steady and ECB President Mario Draghi said policy makers are “ready to act” if the region’s economy declines further. The pound gained as the Bank of England refrained from boosting asset purchases. The yen slid at least 2.9 percent versus all of its 16 most-traded peers as BOJ Governor Haruhiko Kuroda doubled monthly bond buying.