EU authorities placed six billionaires on a sanctions list Monday, barring the individuals from moving their property.
Hamm used an LLC and more than a dozen different trusts to complete the transfers.
Proposed rules would require family offices to disclose the names and addresses of shareholders.
Buffett's net worth has risen $2.4 billion this year to $111.3 billion and he now tops Zuckerberg by $1 billion
Space tourism gets a boost from the tourists' soaring wealth, tech advances and new rocket operators.
The Waltons are the world's wealthiest family, with a fortune estimated earlier this year at about $238 billion.
The value of the two fortunes is yet another watershed moment in what's shaping up to be a historic week for billionaires.
What they bought might surprise you.
The sale of the late Microsoft co-founder's yacht comes amid a record-hot market for luxury boats.
The bail amounts highlight a little understood part of the criminal justice system.