get_event_seller_concentration

Reads only.

Use this for one current reading of how concentrated one event's inventory is among its sellers. Use get_event_seller_series instead for how sellers moved hour by hour, and get_event_seller_market for the prices of chosen sellers. How concentrated one event's inventory is among the sellers behind it, anonymously. sellers_active is how many distinct sellers hold inventory; top1_share and top3_share are the share of attributed tickets the largest one and the largest three hold, 0 to 1; hhi is the Herfindahl-Hirschman index on the same 0 to 1 scale and shape is the band it falls in, spread, concentrated or dominated; coverage_pct is how much of the event's inventory could be attributed to a seller at all, and a low coverage means the shares describe a small part of the house, so quote it beside them. as_of is when the inputs were read. concentration is null only when the event has no reading, which is the common case and not an error. An account whose plan does not include this reading gets a plan_required error instead, with entitled false and required_tier naming the plan that unlocks it: say the plan, never that there is no data. No seller is named, ranked or identified, here or anywhere else on this surface, and there is no way to ask for one.

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