Universe
Point-in-time S&P 500 membership, and the pre-market batch that screens it.
Index
As-of date
Members
Point-in-time membership
Snapshot date
Point-in-time membership
Membership is point-in-time: a name appears only on dates it was actually in the index, so historical screens are not survivor-biased.
Pre-market batch
Batch planner
Screen the point-in-time universe and propose the top names worth a full analysis. Preview is a dry run: it costs nothing and queues nothing. Each real analysis is roughly 1M tokens.
20 names would be reviewed