Darkpool Time Profile

WHEN one ticker's off-exchange volume traded, by price, for one session: a sparse 5-minute × price grid of shares, per-row and per-bucket totals, the POC and 70 % value area, and the largest block prints at their report time. A session still being built answers 503 with Retry-After.

cells_side = flat [buy, sell, away] share triples in cells order: buy pressure = shares at the ask + 60 % of those near it, sell = at the bid + 60 % near it, away = more than 0.1 % (and 2 cents) outside the quote, left out of pressure; the rest of a cell is neutral. totals adds buy_volume / sell_volume / away_volume. Absent when the profile was built without quotes.