Do any of you know of a way to remedy this issue?
When you fetch Yahoo data, and you pass a list of tickers and date ranges, there are times where some tickers in the list didn't trade within the particular date range. So what happens in the query ceases entirely. Ideally I'd want the returned data to just show NaNs for the dates that a particular issue didn't trade, next to the populated fields of other tickers that did trade and therefore have data.
As an example ... say I wanted adjusted close prices for 'IBM' and 'FB' (FaceBook) from May 2010 to today. IBM of course has been trading way before 2010, but FB didn't IPO until May '12 so from 2010 to May '12 there wouldn't be any data. So ideally I want to show NaNs for FB from 2010 to May '12 then the adjusted closing prices from May '12 to today.
Thanks in advance for any input.