@Huoya
The IPO year for GOOG appears as 2014, which makes the correponding dog to be yellow. The shares negociated under GOOGL have IPO from 2004. So, should the IPO date follow the time when the specific ticker started to be available in the market, or should it be related to when the company started as a public company?
My understanding is that the time since IPO is one of the ways to provide higher confidence on the auditted data the company provides. In this case, the IPO date should be the same for all classes of shares.
What are your thoughts on this matter?