Shares of Absa Group tumble more than 3 percent to 137.04 rand, extending losses for a third straight session and hitting their lowest level since November.
Investors have hammered the South African lender since it warned on Tuesday that first-half profits were likely to fall as much as 10 percent, citing an increase in mortgage-related bad debts.
Absa, which is majority owned by Britain's Barclays, has since seen 13.4 billion rand ($1.6 billion) of its market value wiped out, according to Thomson Reuters data. - Reuters