One day after Trump's inauguration, oil and gas billionaires see their total wealth boosted by more than $3 billion.

Julia. Julia Flesher Koch, who inherited a large stake in Koch Industries, is worth a reported $76 billion, and is the world's second richest woman. Francoise. Francoise Bettencourt Meyers ...

Fully 38% inherited all their wealth, including the three of the richest women in the world, Alice Walton ($104 billion), Julia Flesher Koch and family ($76 billion) and Françoise Bettencourt ...

A new report reveals US fossil fuel billionaires have got richer to the tune of over $40bn in the past nine months, thanks to ...

Huang now trails just behind Julia Flesher Koch — the widow of David Koch, a co-owner of US conglomerate Koch Industries — and her family, who are worth $69.3 billion, per Bloomberg.