Shares of Salesforce traded 8,50% lower today at $220,78. Since the Salesforce-Slack deal reached the ears of the public, shares of the CRM giant have fallen, while shares of the enterprise social upstart have risen sharply. That Slack did well since news of the deal broke is not a surprise. Salesforce is paying more for the company than it had been worth, the premium to its prior value constituting its argument that Slack's investors should approve the deal. Salesforce also announced 4 quarter earnings which are lower than analysts’ estimates.