In other news
Oil prices have recovered after the Iran nuclear talks were extended until July 7, giving oversupplied markets a breather.
US stocks have lifted, following European equities higher on hopes for a deal with Greece as US data showed private-sector hiring accelerated in June.
Asian markets have tracked global stocks higher on hopes for a deal to keep Greece in the eurozone, but Shanghai tumbled again.
The major JSE indices were up by midday, after the Resources index recovered strongly from the previous day's slump.
Stephen Koseff, chief executive officer of Investec, received R56.9m in salary and bonus for the fiscal year ended in March, a 23% increase from a year earlier.
Human activity is leading to a decline in the variety of plants and animals through extinction, as organisms not useful to human needs are killed off, according to a new study.
Europe's main markets have closed higher, with London's benchmark FTSE 100 index of top companies rising 1.34% to end the day at 6 608.59 points.
Iron ore and manganese producer Assore says its full year earnings are expected to be up to two thirds lower after the dollar prices for its commodities fell during the period.