April 26 (Reuters) - Westpac Banking Corp WBC.AX :
* WESTPAC REAFFIRMS PERFORMANCE OF MORTGAGE PORTFOLIO-WBC.AX
* ACKNOWLEDGES MEDIA AND ANALYST REPORTS ON APRA'S 2016 INDUSTRY REVIEW OF CERTAIN CONTROLS ON MORTGAGE SERVICEABILITY REQUIREMENTS
* AT 31 DECEMBER 2017 WESTPAC'S MORTGAGE 90+ DAY DELINQUENCIES IN AUSTRALIA WERE 0.67%