New users share

Users with no prior session in their identified history are counted as "new"; their share of total users in the selected range is computed. This is the complement of the returning-user share.

Imagine you want to know how well an acquisition campaign or fresh content brought in genuinely new audience, rather than just pulling back old visitors; this metric answers exactly that. A high new-user share is good for growth campaigns, but if it stays high while returning users never grow, the site isn't succeeding at retention.