Will Pfizer's COVID Pill Crush the Hopes of Merck Investors?

Will Pfizer's COVID Pill Crush the Hopes of Merck Investors?

Source: 
Motley Fool
snippet: 
  • When Merck released findings from its COVID pill, its stock soared more than 10%.
  • But with Pfizer's pill showing superior efficacy, Merck shares have quickly reversed course.
  • The market could be large enough to support both pills -- but that relies on a lot of assumptions.