Save South Africa says it is "shocking news" that Atul Gupta is in 7th position on the Sunday Times's Rich List.

"For one man to have acquired so much wealth, so fast, is in itself very disturbing," Save South Africa, a collective of organisations, civil society groups, business leaders and prominent individuals who aim to keep government accountable, said in a statement on Sunday.

"But when it is Atul Gupta, a man whose every business activity is being questioned because of corruption, money-laundering and his penchant for peddling posts in public office, we really have to say: there is something fundamentally wrong."

The rich list, published on Sunday, ranks the 200 richest South Africans based on, according to the publication, "the value of disclosed directors' holdings in JSE-listed companies" for between December 1 last year to November 20 this year.

Gupta is said to have amassed a personal wealth of R10-billion. In its statement on Sunday, Save South Africa asked President Jacob Zuma to stop "ducking and diving" in his appointment of a full judicial enquiry into the scale of state capture.

"Jacob Zuma... stands at the centre of not only the Guptas' illicit economic empire, he actively facilitates it. He abuses our Constitution; he consistently disrespects the rule of law, and involves members of his own family in the looting."

Save South Africa also expressed concern at the decrease of black ownership in the economy. Black men occupied only 35 of the 200 positions on the rich list, with women claiming just seven.

"It is clear that, under Zuma's watch, black ownership of the economy is shrinking and the entire black economic empowerment project has regressed," Save South Africa said.