https://www.reuters.com/article/us-wirecard-accounts-history-factbox/factbox-german-payments-firm-wirecard-goes-from-boom-to-bust-idUSKBN23W1HE

Wirecard said on Thursday it was filing for insolvency after disclosing a $2.1 billion hole in its accounts only a week ago, capping a swift demise for a company that expanded rapidly over two decades to become a member of Germany's blue-chip share index.