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The Order Book panel shows the live ladder of buy and sell orders for a market — who’s willing to trade, at what price, and in what size. Open it with / → OB, or use the book built into the Event Viewer. Order book ladder with asks above, bids below, and the spread row between

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Reading the ladder

  • Asks (above the spread, red) — what sellers are asking. The lowest ask is the price you’d pay to buy right now.
  • Bids (below the spread, green) — what buyers are offering. The highest bid is what you’d receive to sell right now.
  • The spread row separates them and shows the current gap. A 1¢ spread means a liquid, cheap-to-trade market.
  • Each level shows the quantity resting there and its dollar total, so you can see exactly how much size the market can absorb at each price.
  • The footer tracks the day’s traded value for the market.

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Using it

Click a price to trade there

Clicking a level pre-fills a limit order at that exact price — the fastest way to place a resting order where you want it.

Lock to the spread

The Lock control keeps the ladder centered on the spread as prices move, so the action never scrolls out of view.

Size up your order

Before a big market order, check how much is available at the top of the book — it tells you your real fill price.

Watch for walls

A huge resting order at one price acts like support or resistance — the price has to eat through it to move past.
Classic layout: dock the Order Book beside a Chart — price history on one side, live depth on the other. See Panels, tabs & layouts for how to arrange them.