The definition
A single quarterly earnings release by a company, together with the stock's move that followed it. One print is one observation in a base-rate count.
How prints are counted
Counting starts from the earnings calendar: each quarterly release by a company is a candidate observation. A print is priced when the stock's reaction to the release is observable in the atlas. A print whose reaction could not be observed is recorded as unpriced and stays outside the count a base rate rests on.
The prints-counted field on a card is the priced count. It is the N every share and every median on that card is computed over.
On a base-rate card
The print is the first field read, because it sets the weight of the rest. A share or a median drawn from the count means what the count can support, and a count resting on few prints carries the small-sample flag beside it.
What it is not
A print, in this corpus, is not the earnings report on its own. The report without the move that followed it is not an observation here; the unit is the release and its reaction together.
One print is one observation — never weighted, never split, never counted twice.