https://techcrunch.com/2020/11/25/slacks-stock-climbs-on-possible-salesforce-acquisition/ > News that Salesforce is interested in buying Slack, the popular workplace chat company, sent shares of the smaller firm sharply higher today. > Slack shares are up just under 25% at the moment, according to Yahoo Finance data. Slack is worth $36.95 per share as of the time of writing, valuing it at around $20.8 billion. The well-known former unicorn has been worth as little as $15.10 per share inside the last year, and worth as much as $40.07.