"You can't own them outright, you can't cut them up, you can't sell them," Stubbs said.
"The Government owns 51 per cent. So with the absence of a control premium, offshore buyers will not be so interested in these stocks."
Stubbs said there would probably be a high level of interest in buying shares shown by the New Zealand public.
"When you look at these sorts of floats here and around the world, quite often the public interest can really surprise people in terms of how many people are prepared to register for shares.
"And it looks like the Government wants to encourage that and the stock exchange is making positive noises about that as well."
Tower Investments was "completely agnostic" about the Government's "Mixed Ownership Model" but what needed to happen was for all the information to be out on the table, Stubbs said.
"The more clarity there is, the more accurately the shares will be priced," he said.
"Financial markets hate insecurity. If these come to the market where there's a good deal of insecurity, it will be reflected in the price that people are prepared to pay."
In the long-term, Stubbs said companies like his would be net buyers of stocks in the SOEs as Kiwisaver money came in.
"They fulfil the criteria that we look for - long-term stable dividends, well governed, unlikely to be any surprises in terms of what they do with their businesses having the Government as the majority shareholder.
"We think Kiwsaver funds will end up net buyers of these things for quite some time."
The Government is also planning to sell down its present shareholding in Air New Zealand to 51 per cent.