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Wall Trader

See the walls before price gets there.

Wall Trader reads every SPX 0DTE spread as it prints and draws where it was sold: calls above, puts below, strike by strike. Live from 9:30 ET.

  • Free during beta
  • Read-only, never places orders
  • Traded live on Discord every morning
SPX on 7 October 2026 from noon to the close, between the call wall at 7,830 and the put walls belowCall wall 7,830 · resistancePut walls 7,745 · 7,715 · support
7 October 2026, noon to the close. SPX finished at 7,801.72, between the walls.

One real session, 7 October.

Straight from the dashboard that day. Nothing is back-tested or redrawn.

  1. 10:00

    The puts are there first.

    7,715 already holds 4,753 puts sold. The biggest call wall has 406.

  2. 11:30

    Calls stack at 7,830.

    From 406 to 2,272 contracts in ninety minutes. SPX sits between the two walls.

  3. 16:00

    Both walls held.

    The day's range was 7,763.63 – 7,806.65: the low 49 points above the put wall, the high 23 under the call wall.

Walls don't always hold. The dashboard shows where the size sits and how it changes; what price does next is up to the market.

What's on the screen.

One dashboard for the whole session, on a phone or a computer.

Walls and heatmap

Walls and heatmap

Every 0DTE spread sold, by strike, building through the day.

Opening positions

Opening positions

The book from earlier sessions, ready before the bell.

The spread tape

The tape

Each spread as it prints: opening or closing, and at which wall.

Dealer exposure by strike

Dealer exposure

Gamma, vanna and charm by strike for today's expiry.

Watch it used live.

Every weekday at the open we trade SPX 0DTE on Discord with the dashboard on screen. Come and see how the walls are read, and ask anything.

09:30 ET

Monday to Friday, at the NYSE open.

Questions.

What does it cost?

Nothing while it is in beta.

Does it place trades?

No. It is read-only and never places orders.

Is this financial advice?

No. It shows what traded; what you do with it is up to you.

Where does the data come from?

The full options trade tape and live exchange quotes, processed in-house.

Which tickers?

SPX in full, plus SPY, QQQ, IWM and DIA with walls, the tape, quotes, IV and RVOLM.

Does it work on a phone?

Yes. It runs in the browser on a phone, tablet or computer. There is nothing to install.

Free while it's in beta.

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