@pilias_simber, They are still sales of the title and in a GLS, that would include digital sales of a game as publishers/developers know these numbers and are most of the times included in their press releases. Digital distribution sales are tracked and recorded - just not in a way that is freely available to the public via NPD numbers. NPD futures would not include digital sales as they are not tracked by NPD, but GLS stocks would because they are still sales of a title.
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They are still sales of the title and in a GLS, that would include digital sales of a game as publishers/developers know these numbers and are most of the times included in their press releases. Digital distribution sales are tracked and recorded - just not in a way that is freely available to the public via NPD numbers. NPD futures would not include digital sales as they are not tracked by NPD, but GLS stocks would because they are still sales of a title.