It is investigating whether the registered prospectuses of Hanover Finance, Hanover Capital and United Finance breached the Securities Act when Hotchin was a director of all three.
Some 16,000 investors have lost more than $500 million in the companies.
Justice Winkelmann dismissed an application in May to overturn the freeze on some of Hotchin's New Zealand assets and said the authority had "good grounds" to investigate him for alleged breaches of the Securities Act.
The asset preservation orders were put in place to ensure that if any investors wished to take civil action against Hotchin in the future, money would be available should they win.
Although parts of Hotchin's assets are still frozen, Justice Winkelmann has removed the freeze over household assets for use by Hotchin's Australia-based family.