Slack’s initial public offering was pretty successful. Set to go off on the New York Stock Exchange at $26, its shares actually fetched $38.50 at their debut. (It has been all downhill from there, and now you can have some at about $21.) No wonder Ken Griffin’s little market-making business has made him $5 billion richer.
On the other hand, perhaps Slack’s IPO was a little too successful? And maybe some other tech unicorn IPOs, too? (Citadel also managed Uber’s listing, which, it must be said, priced at the low end of its range and not 50% above it.) The SEC’s just wondering out loud here. In information-request form.