# Dealer Greek Term Structure

Net dealer gamma, delta, vega, theta, vanna and charm for each upcoming expiry in the current option book.

The **Dealer Greek Term Structure** widget groups the current options book by
expiry and shows one net dealer-exposure bar for each date. Choose Gamma,
Delta, Vega, Theta, Vanna or Charm without putting unlike units on the same
axis.

## What it shows

| Control or readout | What it means |
|---|---|
| **Greek** | The exposure shown on the chart and in the expiry list |
| **Blend / OI / Vol** | Engine positioning, printed open interest, or today's session volume |
| **DTE** | The furthest expiry included, from 7 through 90 days |
| **Green bar** | Positive net dealer exposure at that expiry |
| **Red bar** | Negative net dealer exposure at that expiry |
| **Total** | The selected exposure summed across the visible expiries |

Gamma is shown in dollars per 1% move, Delta in dollar delta, Vega in dollars
per volatility point, Theta in dollars per day, Vanna in delta dollars per
volatility point, and Charm in delta dollars per day. The unit changes with
the selected Greek and is printed beside the headline value.

## How to use it

- Start with **Gamma** to see whether one near-term expiry dominates the
  current dealer regime or whether the sign is consistent farther out.
- Switch to **Vanna** or **Charm** to locate the expiries where volatility or
  time decay has the largest current delta effect.
- Compare **OI** with **Vol** to separate established positioning from today's
  activity. Use **Blend** when you want the same positioning view used by the
  main engine widgets.
- Increase the DTE window to check whether a front-expiry extreme persists
  through later dates or quickly reverses.

Every bar is calculated from the option book available now. The widget does
not project how positions or price will change, and it is not available in
Replay because historical full-chain Greek terms are not stored.