Market Extra: Here’s why concerns about omicron and doubts in the Fed’s ability to deliver aggressiv

Paul Ellis/Agence France-Presse/Getty ImagesInvestors flocked to the safety of Treasurys on Thursday, pulling down yields as concerns about the omicron variant flared and doubts lingered that the Federal Reserve will be able to lift interest rates aggressively to help combat inflation.The rally led to lower yields on everything from 1-month bills to the 20-year Treasury bond. Yields on 2-year to 7-year maturities, which capture the period in which the Federal Reserve plans to execute its...