Trump's trade war with China began March 22, 2018. https://en.wikipedia.org/wiki/China–United_States_trade_war This chart shows how serious the problem is. Anyone thinking that Trump is responsible for any profit they may have made on their investments should take a close look at this chart and use the scanning tool provided. https://www.macrotrends.net/1358/dow-jones-industrial-average-last-10-years Notice how the stock market jumped up roughly 2,000 points after the November election. The Republican Party took control of government and Wall Street reacted in a very positive way because business leaders are generally Republican. The important point is this. The Dow leaped ahead by 2,000 points before Trump took office on Jan. 20, 2017. He hadn't done anything yet. A far more important point is the fact that since Trump started his trade war with China, the Dow has actually lost ground. On Jan. 29, 2018, the Dow hit its 2018 high of 26,439. As of August 23, 2019, the Dow stood at 25,629, a net loss of 810.