Japan grounds Dreamliners

Japan’s two leading airlines grounded their fleets of Boeing 787s yesterday after a Dreamliner jet made an emergency landing.

Boeing’s shares fell 3.3% as analysts began to lose some of their conviction in the stock, which had held up relatively well despite the dozen or so issues with the plane in the last six weeks.

All Nippon Airways (ANA) said that instruments aboard a domestic flight indicated a battery error.