RANKED number 259 on the list released by Forbes's wealthiest 400 billionaires. In 2017, he ranked number 248. Mr.Trump's net worth has flatlined at $3.1 billion. In 2015, Forbes VALUED his net worth at $4.5 billion. Forbes attributes his declining wealth to deeper REPORTING about his assets, the decline in brick-and-mortar retail, the SLOWDOWN in real estate, particularly in the luxury sector, and how being President AFFECTS the brand.