Slack stock soars after direct listing By: MarketWatch June 20, 2019 at 12:18 PM EDT Slack Inc. shares did jumped about 50% on Thursday, after the creator of a popular workplace-chat tool made its public debut via an unconventional route. Read More >> Related Stocks: Crowdstrike Holdings Inc Lyft Inc Cl A Pagerduty Inc Renaissance IPO ETF Slack Technologies Inc Spotify Technology S.A. Uber Technologies Inc Zoom Video Communications Cl A