Shares of Moderna Inc.          MRNA,         -1.97%        were down 2.4% in trading on Monday after the company said Switzerland exercised an option to buy an additional seven million doses of its COVID-19 booster. Moderna said delivery of those shots is set to occur in the second half of 2022. Switzerland has ordered a total of 27.5 million doses from Moderna. The company’s stock is up 134.1% this year, while the broader S&P 500          SPX,         +0.07%        has gained 25.8%.