According to online reports, foreign media analysis of corporate information disclosures shows that Trump's trade war has caused more than US$34 billion in sales losses and higher costs to companies. The continued uncertainty of tariffs has paralyzed the decisions of some of the world's largest companies, and this loss is expected to rise. In the United States, Asia and Europe, companies such as Apple, Ford, Porsche and Sony have lowered or significantly lowered their profit forecasts, with the vast majority of companies saying that the instability of Trump's trade policies has prevented them from accurately estimating costs. The valuation includes 32 companies in the S & P 500, 3 companies in Europe's Stoxx 600 and 21 companies in Japan's Nikkei 225 index. Economists say companies 'losses could be multiple times the amount they have disclosed so far.