Yesterday at midday, a tweet from an anonymous account linked to a dodgy file-sharing site, where a PDF was available to download. The PDF was a 32-page dossier accusing the Kerry Group of various accounting issues.  Within half an hour, €2 billion was wiped off the value of Kerry Group. The shares have since recovered about €1 billion of the initial damage. The PDF is a report by an outfit called Ontake Research. Nothing is known about Ontake except that they’re claiming to be short sellers of some type, seeking to profit from a drop in the Kerry share price.…