The corporate regulator is probing the biggest funder of "right-wing" disinformation group Advance – as it can be revealed an illegal company structure was use to funnel more than $1 million.

A mining exploration company chaired by Warren Mundine has failed to raise even one-fifth of the $10 million sought and must return money to investors.

A mystery shell company with secret owners – and a coal billionaire — were among the biggest funders of the “No” campaign against the Voice, filings reveal.

A mining company “investment” being heavily spruiked by anti-Indigenous Voice campaigner Warren Mundine is a sham, with investors at risk of losing millions of dollars.

A minerals exploration company spruiked by Warren Mundine has been shunned by investors.

A uranium exploration company that lavished Warren Mundine with hundreds of thousands in remuneration has suffered a fierce rebuke from its shareholders.