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Question about the EventVestor dataset

I've been working with the EventVestor dataset regarding CEO changes and I was wondering that if I'm pulling the data in an algorithm, when I'll first be able to access an entry. For example, if the asof_date is 2016-05-04 but the timestamp is 2016-05-05, will I first be able to get that data point on the 4th or on the 5th?

2 responses

The timestamp indicates the date and time when Quantopian fully processed the data and as such when the data is available for use by an algorithm. The as_of date is the date upon which the event occurred. So in your case, the CEO change occurred on the 4th, EventVestor likely posted new data that evening (either late the 4th or very early on the 5th) and we processed it some time on the 5th. If the timestamp is prior to 8:45am ET on the 5th, it will be available in before_trading_start() on the 5th.


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Alright. I haven't looked through the entire API yet but is there a way to set callbacks for when new data becomes available? If there is a callback and the data is processed before 8:45ET, will the callback be called when trading begins?