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Official template · advanced · Option flow

Compare sector flow with snapshot gamma.

See which SIC groups absorbed premium and how snapshot net GEX sits, without treating Rank’s sector column as SQL.

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Sector Flow & GEX Aggregation · 21-second walkthroughMarket session Sep 25, 2026

The report UI is recreated from the test app's Sep 25, 2026 session, not a live screen. A historical example with music; no narration.

Sector Flow & GEX Aggregation · real test-app reportMarket session Sep 22, 2026Swipe to inspect →
Real Sector Flow & GEX Aggregation report in the TradingFlow test app, showing Premium and snapshot GEX by SIC sector for the September 22, 2026 market session.

Captured Sep 23, 2026 on testapp.tradingflow.com. This is a historical example; results on this page do not refresh. Swipe across the image to inspect its columns.

Sector Flow & GEX Aggregation · how the report is assembledConceptual map
  1. 01Session flow + SIC
  2. 02Group by sector
  3. 03Premium + snapshot GEX

Session premium and prior-close GEX have different clocks.

Read the output

  1. 01Session premium and bull/bear shares by raw SIC description (plus unclassified).
  2. 02Convention-based net GEX (same kernel as Gamma Structure Map) summed in that SIC group.
  3. 03Name counts per group. ETF/index tape is excluded; those names usually have no SIC anyway.

Keep in mind

SIC is not Rank’s coarser sector families. Semiconductors stay separate from Prepackaged Software.

How to read it

From report to evidence

  1. 01

    Run the sector rollup

    Open Sector Flow & GEX Aggregation in Cookbooks.

  2. 02

    Read premium first, then net GEX

    A loud SIC group with negative net GEX is two facts. Do not treat the row as a sector fade.

  3. 03

    Drill a name, not the SIC string

    Rank and Option Trades still work at symbol grain. This report does not open a sector tape.

Method and limitations

A paid Cookbook that groups single-name session premium and convention-based net GEX by raw SEC SIC sector. Unclassified is missing SIC, not a hidden mega-sector. Not Rank’s Technology/Healthcare buckets. Official app template: Sector Flow & GEX Aggregation.

What the report computes

  • Session premium and bull/bear shares by raw SIC description (plus unclassified).
  • Convention-based net GEX (same kernel as Gamma Structure Map) summed in that SIC group.
  • Name counts per group. ETF/index tape is excluded; those names usually have no SIC anyway.

What it does not claim

  • SIC is not Rank’s coarser sector families. Semiconductors stay separate from Prepackaged Software.
  • Net GEX is snapshot-era, not dealer inventory.
  • Sentiment-tagged premium is not signed DEX; trade-grain DEX stays unsigned.

Grouping is raw SEC SIC on SymbolMetaData.sector, which is finer than Rank’s sector families and is not queryable as those families in SQL.

Frequently asked questions

Is this the same as Rank’s sector filter?
No. Rank rolls SIC into coarser families in the app. This cookbook groups the raw SIC string. They will not match row-for-row.
What is (unclassified)?
A missing SIC on SymbolMetaData — common for ETFs and indices. This report also limits the tape to STOCK so unclassified is mostly holes, not SPY.

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The public page explains the report. Run the official template in TradingFlow for a selected completed market session.

Open Sector GEX
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