By Caitlin Ostroff 


 
   -- Amazon.com](https://www.wsj.com/market-data/quotes/AMZN) and [Alphabet 
      (https://www.wsj.com/market-data/quotes/GOOG) will report quarterly 
      earnings after markets close Tuesday. Both companies are expected to have 
      benefited from a surge in online holiday shopping. 
 
   -- Some of the most heavily traded stocks among individual investors fell in 
      premarket trading Tuesday after rallies last week. Shares of GameStop] 
      (https://www.wsj.com/market-data/quotes/GME) fell 23%, [AMC Entertainment 
      Holdings (https://www.wsj.com/market-data/quotes/AMC) declined 21% and 
      headphone manufacturer Koss dropped 24%. 
 
   -- Silver prices slipped early Tuesday after a leading metals exchange 
      slapped higher margin requirements on traders. Comex silver futures were 
      down 6% at $27.68 a troy ounce. 
 
   -- Shares in blank-check company Holicity 
      (https://www.wsj.com/market-data/quotes/HOLUU) rallied 68% premarket. 
      Space-launch company Astra said Tuesday it is going public via a merger 
      with the SPAC in a deal with an enterprise value of about $2.1 billion. 
 
   -- United Parcel Service (https://www.wsj.com/market-data/quotes/UPS) shares 
      gained 3.4% premarket after the package-delivery giant posted an adjusted 
      profit and revenue that rose above forecasts.

Click here for a full briefing on what to watch when markets open Tuesday (https://www.wsj.com/articles/gamestop-ups-silver-what-to-watch-when-the-stock-market-opens-today-11612267341?mod=latest_headlines).

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(END) Dow Jones Newswires

02-02-21 0802ET