Trump's fortune drops to $3.1 billion, ties Snap's Evan Spiegel on new Forbes 400 rich list By: CNBC.com News October 17, 2017 at 08:00 AM EDT President Donald Trump's net worth fell by $600 million to $3.1 billion, according to Forbes. Read More >> Related Stocks: Amazon.com Berkshire Hathaway Microsoft Snap Inc