Citigroup, the world's largest bank, on Tuesday said it regretted executing a jumbo trade of European government bonds in August. The trade shook the market and prompted an investigation by financial regulators in the UK and Europe.
?We did not meet our standards in this instance and, as a result, we regret having executed this transaction,? wrote Tom Maheras, Citigroup's head of global capital markets, in an e-mail to employees seen by the Financial Times.





