Bloomberg released the list of the 25 richest families in the world.

The Johnson family: This family is worth $72.4 billion and is involved in Fidelity Investments 

 The Thomson family: This family is worth $87.1 billion and is involved in Thomson   Reuters.

The Wertheimer family: This family is worth $88 billion and is involved in Chanel 

The Mars family: This family is worth $133.8 billion and is involved in confectionery and pet care 

The Ambani family: This family is worth $99.6 billion and is involved in Reliance Industries 

The Koch family: This family is worth $148.5 billion and is involved in the oil industry 

The Hermès family: This family owns the French luxury goods business and is worth $170.6 billion 

The Al Thani family: This royal family of Qatar is worth $172.9 billion 

The Al Nahyan family: This ruling family of the United Arab Emirates is worth $323.9 billion 

The Waltons: This family is worth $432.4 billion and owns 46% of Walmart