Categories Articles Twitter market value jumps more than $4 billion on news Jack Dorsey is stepping down as CEO Post author By crystalg Post date November 29, 2021 Business Insider Business Insider Tags billion, Dorsey, Down, Jack, jumps, Market, More, News', Stepping, Than, Twitter, Value ← Make Your Vax, Mask and Office Decisions With Kindness and Generosity → Global temperatures warmer now than in past 10,000 years, solving climate mystery