Jordan Novet / CNBC:
Slack reports Q2 revenue of $145M, up 58% YoY, says it had over 100,000 paid customers, up 37% YoY; stock is down ~15%+ after hours — KEY POINTS — Stewart Butterfield, co-founder and CEO of Slack, at the 2018 WEF in Davos, Switzerland. — Shares of Slack, maker of the popular workplace chat app …