[frik]

The first IPO in YCombinator portfolio. Quite interesting they had to invest in 1450 companies first and now after 12 years the first IPO.

  As of 2017, Y Combinator had invested in ~1,450 companies 
  including Dropbox, Airbnb, Coinbase, Stripe, Reddit, 
  Zenefits, BuildZoom, Instacart, Twitch.tv, Machine Zone, 
  Weebly, Paribus, and Chinese startup Raven Tech. The 
  combined market capitalization of YC companies was over $80B.

A handful of the YC companies are well known including Dropbox, AirBnB, Stripe, Reddit, InstaCart, Twitch (bought by Amazon) and two rather infamous ones Zenefits and Coinbase.

The next IPO will be AirBnB, but then ahead is another lean period.