Investec reported a 10.2 per cent rise in full-year profit on Thursday.
Tiger Brands suffered setbacks in its foreign businesses after operations in Nigeria were affected by devaluation of the naira.
South Africa's Harmony Gold on Friday narrowed its quarterly loss as job cuts helped offset lower gold output.
Gold Fields on Thursday swung to a quarterly loss as production fell 10 per cent.
Glencore on Tuesday reported a 9 per cent fall in first-quarter copper production mostly due to lower copper grades.