What Happens to the DOM During a News Release?

Helious Desk · 4 August 2026 · 7 min read

At 8:29am ET the order book looks deep and orderly. By 8:30 most of it has gone, and nothing has broken. The people who filled that book stepped out of the way on purpose, and that decision sits behind almost every bad fill anyone has taken on a news release.

1. What is the DOM, and what does it show?

The DOM, short for depth of market, is the order book drawn as a vertical price ladder. Bids sit below the current price, offers above it, and each level shows the quantity resting there. Most futures traders watch it inside a platform such as Sierra Chart.

What the ladder shows is the limit orders people are willing to leave sitting there right now. It says nothing about intent, it cannot show you hidden size, and any of it can be pulled in a second. Read the ladder as a picture of supply and demand and you will get caught out, because what you are looking at is who has not cancelled yet.

2. What happens to the DOM in the seconds before a release?

It empties. In the last seconds before a scheduled release the ladder that looked deep a minute earlier thins out to a fraction of its usual depth, bid and ask drift apart, and the size at each level collapses. On a big number it is stark, and you see it on every CPI and payrolls morning.

That is rational behaviour, not a fault in your platform and not a sign that anything unusual is happening. It happens on every major print, so you can plan around it. Release times are on the economic calendar.

3. Why does the order book empty out?

Because leaving an order sitting in the book across a release is a losing trade for whoever left it. A limit order is a free option you have handed to everyone else, and they can trade against you at your price whenever they want. Most of the time that is fine, because you collect the spread. Seconds before a number lands, the only people taking that option are the ones who react faster than you can cancel, and you get filled at the exact moment your price is about to be wrong.

So market makers pull their quotes and come back once the number is public. They are careful precisely because the release is scheduled. Nobody hands out free liquidity into an event they can see coming.

4. What is a liquidity air pocket?

It is the hole an emptied book leaves behind, a stretch of price levels with little or no size resting on them. Feed a large market order into a full book and it chews through the size at each level, so price walks. Feed the same order into an air pocket and it clears several levels at once, because there is almost nothing there to absorb it.

That is why price jumps on a release instead of travelling. The move looks violent, so people assume something enormous went through. Often it was nothing of the sort. The same order that would have moved price two ticks an hour earlier moves it twenty, because the other side had gone home. Measure the move in basis points against a normal day and you can tell which of the two you are looking at.

5. Why did my stop fill so far from my price?

Because a standard stop turns into a market order the moment it triggers, and a market order takes whatever price it can find. In a thin book the next available price can be several ticks or points away, so your real loss is bigger than the number you set. A stop limit order avoids the ugly fill, but it swaps that for no fill at all while price keeps running against you.

Neither order type protects you from a gap, and believing otherwise costs more money than anything else in news trading. The only reliable protection is not carrying the position through the print. On a funded account that matters more still, because one gapped stop against a trailing drawdown can end the account, which we covered in which news to trade to pass prop firm evals.

6. How long does the book take to refill?

Not all at once. Liquidity comes back gradually, usually over seconds to several minutes, and the size of the surprise sets the pace. Market makers return as they work out where fair value now sits, so a number that matched expectations sees the book rebuild quickly while a genuine shock keeps it thin far longer.

So watch the spread, not the clock. When bid and ask come back to their normal distance apart and size reappears at each level, conditions have normalised and your usual stop distances make sense again. Until then they do not, whatever the timer says.

7. Can I read the DOM during the release, or is it noise?

For the first few seconds it is close to unreadable, and trading off it is how people get hurt. Displayed size is unreliable at the best of times, because orders can be pulled faster than you can act on them and bigger participants use iceberg orders that show a fraction of their real size. During a release both problems get worse: the book updates faster than anyone can read it, and a wall of support can be gone before you have finished reacting to it.

The ladder is worth reading again once the book refills, which is usually about when the move that holds gets going. Being late to a real move costs you a few ticks, and being early to a fake one on a thin book costs a great deal more than that.

8. Which releases empty the book the most?

The ones with the largest and least predictable effect on interest rate expectations. Nonfarm payrolls is the worst of them, because it carries several numbers that can contradict each other and the book stays thin while the market works out which one matters. CPI is close behind, though usually cleaner, since one number dominates. The Fed decision is its own category: the book thins twice, once at 2:00pm ET and again during the press conference questions.

Below that, retail sales, PPI and the ISM surveys thin the book noticeably, but nowhere near as much. Weekly jobless claims barely touch it on a normal Thursday, which is part of why it is a gentler release to learn on.

9. How should I adjust for it?

Know exactly when releases land. Being in the market by accident is the most avoidable mistake in trading, and an alert a few minutes ahead is enough to stop it happening. Then be flat into the major prints rather than trusting a stop that a gap can jump straight over. If you are going to be in anyway, widen what you expect from the range and cut your size, because your normal stop distance does not fit what these events produce.

Afterwards, wait for the spread to normalise before you treat the ladder as information again, and let the first move settle. The first spike often reverses once people read the detail.

If you trade a funded account, check your firm's news rules first. Many ban trading around high impact releases outright. Our post on news and futures prop firms covers what to look for.

10. How do I know what is coming, and whether it mattered?

Two separate problems, and the DOM solves neither. Knowing what is coming is a calendar problem you can settle in advance. Knowing whether the number mattered is the harder one, because the order book shows you the reaction and never the cause. A print that matched expectations and a print that genuinely shocked the market look identical on the ladder in the first seconds. Both give you a thin book and a fast move, and only one of them holds.

Telling them apart means comparing the release to what was forecast, then scaling that gap against how much that series normally misses by. That is what a surprise z-score does, and no price ladder will give it to you however closely you watch.

Where the terminal fits

Helious is not a charting or order flow tool and does not try to be. It sits next to your ladder. The calendar is there so nothing catches you out. Every release is scored against its own history the second it prints, with the curve reaction alongside so you can see whether rate expectations moved. There is a live squawk too, so you hear the number instead of reading for it. Keep your chart and add the news screen. If you would rather watch than read, there is a full walkthrough on YouTube covering how it works and why we built it.

It is $39.99 a month with a free tier, and the methodology page shows the workings.

Where to go next

• The economic calendar and alerts tell you what is coming.
• The releases that thin the book most are payrolls, CPI and everything on the FOMC hub.
• The surprise z-score and the release guide are how you tell a real move from a spike.
• The terminal walkthrough shows it working, and tells the story behind it.
• If you want more reading, try the best news event to trade on a prop firm account and NFP or unemployment claims.