Will it be Noel Tata, Ratan Tata's half brother?
Bloomberg's data notes that since last year, Bill Gates's net worth has decreased by $1.1 billion, while Ortega's has increased by an impressive $10.4 billion.
How well do you know Amancio Ortega? Here are 10 facts about the reclusive owner of Zara.
Zara co-founder Amancio Ortega has toppled Bill Gates to become the world's richest person four times. A peek into the life of the 81 year old even Jeff Bezos can't keep up with!