The two biggest publicly traded fortunes in Europe have risen more than 10 percent in 2015 despite the falling value of the euro in the same period, according to the Bloomberg Billionaires Index. Inditex SA founder Amancio Ortega is Europe's richest person with a $68.6 billion fortune. The Spanish billionaire's net worth has risen $7.5 billion since Jan. 1 and is less than $2 billion from overtaking Mexico's Carlos Slim, who's lost $2.4 billion. L'Oreal SA heiress Liliane Bettencourt's fortune is up $3.7 billion. Bill Gates, the richest person in the U.S. and the world, has lost $1.7 billion in 2015.
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