Sector unusual-flow rollup

The day's unusual-flow premium, volume, average net delta and bullish/bearish symbol counts per sector label, ordered by total premium descending.

One row per label that had at least one symbol with unusual flow on the day; labels with no activity are not returned (no zero rows). Labels are the 11 GICS sectors (Communication Services, Consumer Discretionary, Consumer Staples, Energy, Financials, Health Care, Industrials, Information Technology, Materials, Real Estate, Utilities) plus Diversified and Unknown as delivered by the classification source, and Unclassified for symbols missing from the sector map - at most 14 rows, so the default limit always returns every group and count is the number of active labels.