1 of 1 snapchat logo
(Alternative crop) The Snapchat logo is displayed on a mobile phone, March 1, 2017 in Glendale, California. After a dearth of technology listings in 2016, Snapchat parent Snap is set for its market debut as early as this week. The initial public offering (IPO) if successful could presage a wave of listings from the sector's so-called "unicorns" -- those with a valuation of at least $1 billion based on private funding sources. / AFP PHOTO / Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)