Dropbox expects drop in first-quarter operating margin, shares fall
https://www.reuters.com/article/us-dropbox-results/dropbox-expects-drop-in-first-quarter-operating-margin-shares-fall-idUSKCN1QA2RV
File sharing and storage company Dropbox Inc forecast a drop in current-quarter operating margins from a year earlier, sending its shares down nearly 11 percent in extended trading.