A Zimbabwe deadline for all firms to transfer most of their shares to black Zimbabweans has passed, but it is not clear how many have complied.
The government had said that companies should meet the requirements of a 2008 indigenisation law by the end of March.
Theoretically, non-compliance could lead to a company losing its license.
This was a key part of Robert Mugabe's 2013 election campaign - on the basis that black people were discriminated against during the colonial era.
But it has proved controversial, with detractors saying that it could discourage much-needed foreign direct investment.
The Reuters news agency quotes the minister responsible, Patrick Zhuwao, as saying that most of the country's foreign-owned banks and mining companies have not submitted their indigenisation plans, adding that he thought they would do soon.
But Mr Zhuwao told the BBC's Focus on Africa programme that his ministry was currently "going through submissions made by companies [and] we don't have statistics yet" on who has complied.
He dismissed concerns that the measures would scare off foreign investors.
"Those statements come from voodoo economists," he said, "and these statements are really very far removed from reality."
Now as a investor why would I place a penny at risk there?