Matthew Skene said he was not sure why allegations were made against him in the Federal Court at Brisbane in Thursday.

The lawyer for Goldsky liquidators put to him accusations from director Ken Grace and his wife Jane that he was responsible for $24 million being unaccounted for since Goldsky's 2018 collapse.

"It's totally untrue - that's ridiculous," Mr Skene told the court.

"This is coming from a person who had a loaded gun, who was after my address at some stage."

Mr Skene did not elaborate on that comment.

Mr Grace told the court on Wednesday he believed Mr Skene gained access to accounts which were used as part of the fund.

However, Mr Skene said he "absolutely had no access" to any accounts when asked in court.

He was the second of three former investors to be called on Thursday in the public examination of Goldsky, an alleged Ponzi scheme.

Another investor, Gold Coast businessman Kane McDonald, said he believed he was still owed up to $900,000 since Goldsky went into receivership.

Mr McDonald, who is the director of Penguin Concrete Construction, said Mr Grace never told him where his money was being invested.

This is in direct contract to Mr Grace's claims he regularly invested in companies at Mr McDonald's request.

"At not one stage were we ever told," Mr McDonald said on Thursday.

"I didn't know what Mr Grace was going to buy at any stage."

He also told the court information from Mr Grace about his investments was scarce and he only ever received statements when he requested them.

The hearing will continue on Friday.

Australian Associated Press