https://www.siliconvalley.com/2020/05/29/bay-area-stocks-on-edge-ahead-of-trumps-china-comments/

Bay Area business stalwarts such as Twitter, Apple and Facebook recorded mild losses on the stock market Friday amid a broad retreat on Wall Street as investors awaited what President Donald Trump would have to say at a news conference about China.

Trump offered no details about the subject matter of the news conference, other than it would focus on China. Trump has often blamed China for what he considers to be the country’s coverup of early details about the severity of coronavirus, which initially arose around the Chinese city of Wuhan late last year. Trump administration officials this week have also been critical of new Chinese security measures that run against the independence of Hong Kong.