Twitter shares tumble on forecasts for weaker revenue, higher costs
https://www.reuters.com/article/us-twitter-results/twitter-shares-tumble-on-forecasts-for-weaker-revenue-higher-costs-idUSKCN1PW1AS
Twitter Inc forecast that revenue in the first quarter would be weaker than expected while full-year operating costs would rise, sending shares down more than 10 percent in midday trading on Thursday.