The Slack Technologies application is displayed on an Apple iPhone in an arranged photograph taken in Arlington, Virginia, on Monday, April 29, 2019.

Check out the companies making headlines in midday trading on Friday:

Slack — The work communications stock cratered after its earnings report, falling roughly 16% on Friday. The company said its growth remained steady last quarter despite a boom in people working from home. Revenue grew by 50% during the quarter, much less than the 169% growth reported by Zoom Video. The company also withdrew its guidance for calculated billings, which includes the deferred revenue the company hopes to earn from customers that have gotten credits during the pandemic. The stock is now trading near where it was on May 28 before a rally over the past week.