ZUG (dpa-AFX) - The hacker attack has now also cost the battery group Varta its index membership. The stock will be delisted from the SDax as of May 9, Deutsche Borse announced late Monday evening. Instead, the shares of the tank transmission manufacturer Renk, which has only been listed on the stock exchange since the beginning of February, will be included in the index of smaller stocks.

According to the announcement, the reason for the removal of the Varta share is the failure to publish the audited annual financial report "on time". In mid-March, the company announced that it would not be able to publish this before April 30 due to the hacker attack that was made public on February 13. Against the backdrop of increased armaments efforts by various countries, the Renk share has already risen by half since the stock market flotation./he/ajx