When two companies merge, what happens to the stock ticker data?
For example; ATVI is the ticker for Activision / Blizzard, but
Activision and Blizzard didn't merge until late 2008.
What exactly am I looking at with Google's price data before that
period? Is it an average of the two? Is it just one? Is there a way
to separate them?
Being very new to all this, I couldn't find the answer immediately