Shares of Slack rose 27% Wednesday following a Wall Street Journal report that Salesforce held talks to buy the company. Salesforce stock dropped more than 4% on the news.
https://www.cnbc.com/2020/11/25/slack-shares-jump-following-report-of-possible-salesforce-acquisition.html
https://www.cnbc.com/2020/11/25/slack-shares-jump-following-report-of-possible-salesforce-acquisition.html