MARKET DATA

Market data overview

External fields, derived fields, storage, and consumption.

#Source boundary

The market service requests Robinhood Stock Token assets and current quotes. Zod validates the response before normalization.

#Flow

Robinhood REST → validation → chain-4663 filter → quote cache → typed selectors → UI / engine

#Source versus derived

Bid, ask, currency, halt state, volume, and generatedAt are source fields. The product displays bid, ask, currency, halt, and time. Midpoint, spread, cache age, and asset count are derived fields.

#Unavailable data

No financial zero is substituted for a failed or missing field. Components render an em dash or explicit DATA UNAVAILABLE state.