"In going public on Thursday, Atlassian, a maker of business collaboration and development software, did two things many other market debutantes have been unable to do this year.Atlassian Shares Surge on Trading Debut - The New York Times
It priced its initial public offering above its expected range, and its shares enjoyed a healthy pop in their trading debut.
Shares in Atlassian were $27.22 in late-afternoon trading on Thursday, up nearly 30 percent above their offer price of $21. That valued the software maker at nearly $5.7 billion."
Friday, December 11, 2015
Atlassian Shares Surge on Trading Debut - The New York Times
Coincidentally, see Slack Expects Enterprise Version To Go To Market in Early 2016 (WSJ)