Bill Koch, a billionaire oil and investments mogul, might be worth $2 billion; however, even by his lofty standards, scoring ...

Billionaire Bill Koch has listed his expansive Aspen estate for $125 million, a significant increase from the $26.5 million he paid for it in 2007. Shawn O'Connor Billionaire energy mogul Bill ...

Koch, 84, who is worth an estimated $2 billion according to Forbes, made his fortune through oil and investments—but over the years has plowed a hefty portion of that wealth into real estate.

The Supreme Court is adopting its first code of ethics, in the face of sustained criticism over undisclosed trips and gifts from wealthy benefactors to some justices. The policy was issued by the ...

Billionaire Bill Koch has relisted his huge Aspen compound for $125 million, its highest-ever price. He tried to sell it before with no luck, but he thinks the market is strong enough this time around ...

Billionaire energy mogul Bill Koch is looking to cash in on Aspen’s red-hot luxury real estate market by listing his sprawling 52-acre mountain estate for a staggering $125 million, the Wall ...