Most of the US stock indices rose in early trading on Tuesday, as Dow Jones and S&P 500 jumped to new record highs.
The markets are following the coronavirus pandemic developments, as daily infections in many countries around the world continue to increase, especially due to the Omicron variant.
Observers believe that a "corona tsunami" in the US means that infections are rising by 1 million cases every day, which has already happened during the past 24 hours.
Meanwhile, countries in Europe, including France and the UK, are seeking to control the record spike in infections.
As for stocks, Dow Jones rose 0.8% or 285 points to 36,876 as of 15:14 GMT, and S&P 500 rose 0.2% or 13 points to 4,809, while Nasdaq fell 0.6% or 97 points to 15,735.