** HSBC shares down nearly 6 pct and are poised fortheir worst day in more than 3 years following underwhelming2014 results
** Stock the worst performer across the STOXX 600 as well as among European banks
** Profits miss forecasts which had already been trimmedover the past month
** Bank cuts its ROE target to "more than 10 pct". Had setROE target of 12-15 pct over medium term
** HSBC under a cloud following recent disclosures at itsSwiss private bank - where it has been accused of helpingclients dodge taxes
** Monday's drop wipes out about $9.3 bln off the bank'smarket value
(RM: vikram.subhedar.thomsonreuters.com@reuters.net)