He is followed by Lakshmi Mittal (No. 56; $16.4 bn); Azim Premji (No. 72; $14.9 bn); Dilip Shanghvi (No. 84; $13.7 bn) and Shiv Nadar (No. 102; $12.3 bn), to round off the top five Indian entries in the list. His net worth went up, but not as fast as his peers.
CEO Carl Cook has a net worth of $7.4 billion, Forbes said, placing him 186th on the magazine's annual list of the world's billionaires.
Forbes ranks Trump as the world's 544th richest person, after coming in at No. 324 a year ago. Tepper's net worth is listed at $11 billion.
According to its methodology, Forbes bases its billionaires list on a "snapshot of wealth" taken on February 17 by valuing assets using stock prices and worldwide exchange rates.
Microsoft co-founder and philanthropist Bill Gates topped this year's rich list for a fourth consecutive year, with an estimated fortune of around $86bn. During the campaign he said that he was worth $8.7 billion and said past year in a personal financial disclosure form filed with the federal government that his net worth was "in excess of $10 billion".
Jeff Bezos: The CEO and founder of e-commerce giant Amazon, Bezos' current net worth is $73.8 billion.
Notable newbies include Patagonia sportswear founder Yvon Chouinard; Viking Cruises founder Torstein Hagen of Norway; US hedge fund tycoon Cliff Asness and two of his partners; and John and Patrick Collison, Irish citizens who cofounded San Francisco-based Stripe, which enables online payments. "Rinehart took her late father's bankrupted estate and rebuilt it into something much larger", says Forbes.
Forbes said the $1bn fall in his wealth was due to the slow U.S. property market. "What happens in that micromarket does more to affect the net worth of Donald Trump than anything else in the world".
Also on the list are 15 new self-made women, all but one of whom are from Asia-Pacific, Forbes said. Mike Cannon-Brooks is said to have a net worth of $2.7 billion.
The U.S. continues to have more billionaires than any other nation, with a record 565.