American technology companies have resumed selling certain products to Huawei Technologies after concluding there are legal ways to work with the Chinese telecom giant in spite of its inclusion on a Trump Administration blacklist.

US stocks have slumped as trade tensions between the world’s two largest economies overshadowed positive earnings for Apple and the yield on 10-year Treasuries touched 3% for the first time since June.

Microsoft has posted earnings and revenue that beat Wall Street expectations in Satya Nadella’s first quarterly earnings release as chief executive, offering new justification for his focus on cloud computing.

Hewlett-Packard is being removed from the Dow Jones Industrial Average, a sign of waning confidence in the company’s turnaround efforts amid a historic slump in the PC industry.