The stock market and the US-China tension

The stock market falls today due to the increasing tension between the US and China, the Nasdaq fell by over 2% as the Wall Street feared the restriction on Chinese investment in US companies would reduce the investment in the US stock market and the demand for the US shares. Many US companies, including many tech companies, have earned billions of dollars in the Chinese market. Once the US has put a restriction on the Chinese investment, it is very likely for China to fight back and make American companies' businesses more difficult, then these US companies which are making billions of dollars in China will suffer significant losses. 

It is obvious that when the US and China continue this trade war, the stock market is highly likely to keep falling. Moreover, the US is only fighting with China. The US Treasury secretary, Steven Mnuchin, states that the US not only targets China but also targets other countries which try to steal US technology. And the ongoing trade tension between the US and its allies, the EU, Canada and Mexico. This is definitely bad news for the world stock market, because the world stock market is influenced by the global economy and trade wars between the US, the biggest economy and most powerful country, and other countries will definitely do a huge damage. 

Overall, unnecessarily all companies will suffer. Some companies provide domestic goods and services with inelastic demands, their businesses are less likely to be affected international trade tension and bad economic status.