United, Delta and Alaska Air drew buy ratings Friday as Goldman Sachs resumed coverage of nine passenger carriers. Goldman Sachs analyst Catherine O’Brien is picking winners among U.S. carriers in the face of a choppy post–COVID-19 world for the sector, as she resumes coverage of nine airlines.

Goldman Sachs resumed coverage of various U.S. airlines in a note Friday, issuing Buy ratings for Delta Air Lines (NYSE:DAL), United Airlines (UAL), and Alaska Air Group (NYSE:ALK). The firm also assigned Sell ratings to

Goldman Sachs has resumed coverage of nine airlines and gave a broad overview of the year ahead for the airline sector. Here's a look at the winners and losers in the industry, according to Goldman Sachs.