Slack shares soared Wednesday, forcing a halt during an already abbreviated session, on news that software as a service pioneer and newly minted Dow 30 member Salesforce has held talks to buy the messaging/workflow company.

BREAKING: Salesforce has recently been in talks to buy Slack Technologies, Dow Jones reports.$WORK halted for volatility after spiking 7%. https://t.co/6a0CZFlnp1 pic.twitter.com/TfzV9tBzAW

— CNBC Now (@CNBCnow) November 25, 2020

Slack shares were halted after soaring 7% higher.

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While shares of Salesforce slumped, dragging the Dow lower.

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As Slack shares soared, the joke was on the Twitter bulls who had held out hope that Salesforce might buy Twitter instead. Salesforce CEO Mark Benioff took a close look at Twitter three years ago but eventually revealed that shareholders were against such a deal.