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Official template · basic · Option flow

See the session’s 0DTE share two ways.

Answer "how much of today was 0DTE" with a number that is not quietly exaggerated.

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0DTE Share Today · 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.

0DTE Share Today · real test-app reportMarket session Sep 22, 2026Swipe to inspect →
Real 0DTE Share Today report in the TradingFlow test app, showing By root 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.

0DTE Share Today · how the report is assembledConceptual map
  1. 01Index-complex session
  2. 02Same-day expiry share
  3. 03Contracts + premium

These are shares of the scoped index complex.

Read the output

  1. 01Same-day-expiry share of contracts and of premium for SPX, SPXW, SPY and QQQ.
  2. 02The 0DTE contract and premium totals behind those shares.
  3. 03The same split per root.

Keep in mind

The contract share is not "0DTE is most of the market" — same-day options are cheap and trade in size.

Explore the concept behind this report
Visual explainer
Calendar highlighting today expiration next to a jagged same-session price path.0DTE — expires todayCalendarExpires todaySession path riskgamma + theta move fastFilter DTE on Option Trades — same-day tape is high noise without structure

0DTE options expire the same day. Gamma and theta move fast, filter DTE on the tape and validate with structure.

How to read it

From report to evidence

  1. 01

    Compare the two shares

    Contracts runs far above premium. The gap is the whole point.

  2. 02

    Check the roots

    SPXW carries SPX’s same-day expiries and is shown separately rather than folded in.

  3. 03

    Look at the trend

    The 0DTE Share Tracker follows the same measure across a session window.

Method and limitations

A one-screen Cookbook tool: today’s same-day-expiry share of the index complex, measured two ways. Official app template: 0DTE Share Today.

What the report computes

  • Same-day-expiry share of contracts and of premium for SPX, SPXW, SPY and QQQ.
  • The 0DTE contract and premium totals behind those shares.
  • The same split per root.

What it does not claim

  • The contract share is not "0DTE is most of the market" — same-day options are cheap and trade in size.
  • Scoped to the index complex, where daily expiry exists; it is not a whole-market figure.
  • It measures activity, not positioning or dealer exposure.

Reports the premium share beside the contract share, which is the pair that shows 0DTE dominating volume without dominating the dollars.

Frequently asked questions

Is 0DTE really most of options volume?
By contract count in the index complex it is a large share. By premium it is far smaller, because each same-day contract carries little value. Quoting only the contract share overstates it.
Why only SPX, SPXW, SPY and QQQ?
Those are the roots with daily expiries. Averaging across thousands of single names that list no same-day expiry would dilute the number into meaninglessness.

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

Open 0DTE session share
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