Dartcom is Africa's leading distributor of communication and renewable energy technology solutions.
Shares in Gemfields have reached their highest level in three years.
Shoprite will pay shareholders a final dividend of $141.1 million from its profit for the 2021 financial year.
In 2014, Wiese sold Pepkor to Steinhoff in exchange for about 20 percent of Steinhoff's issued shares.
Renewed buying interest in the shares of the retail giant led to a double-digit increase in its share price.
The loss in market value is linked to Shoprite's share price dropping on the Johannesburg Stock Exchange.