GameStop, AMC End a Wild Week; J&J Says Covid-19 Vaccine 66% Effective

P.M. Edition for Jan. 29. GameStop and AMC stocks bounced back Friday, after online brokers eased trading restrictions. But now securities regulators are reviewing this week's frenzy. Markets reporter Akane Otani has more on the wild week on Wall Street, and financial-enforcement reporter Dave Michaels explains what regulators are reviewing. Plus, Johnson & Johnson says its Covid-19 vaccine is 66% effective. Health and medicine editor Jonathan Rockoff has the details. Annmarie Fertoli hosts. Learn more about your ad choices. Visit megaphone.fm/adchoices