** Shares of Westpac WBC.AX shed 8.8% so far this week, set for their weakest week since February 17, if losses hold
** Australia's no.2 mortgage lender missed expectations for first-half results on Monday
** Shares also slip on ex-dividend trade on Thursday, set to pay A$0.76 per share
** Westpac up 1.7% on the day, tracking gains on the ASX Financials sub-index .AXFJ
** Stock down 4% YTD, including current session's moves
(Reporting by Nikita Maria Jino in Bengaluru)
((Nikita.Jino@thomsonreuters.com;))