https://www.reuters.com/article/us-wirecard-accounts/wirecard-files-for-insolvency-becoming-first-dax-member-to-fail-idUSKBN23W176 >Wirecard said on Thursday it was filing for insolvency after disclosing a $2.1 billion financial hole in its accounts, becoming the first sitting member of Germany's blue-chip share index to go out of business.