Iceberg Orders Explained
Hidden liquidity, refilling bids and offers — and how to read them without guessing.
Learning guide · 6 min read
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An iceberg order shows a small size on the DOM but keeps refilling, hiding a much larger order. You spot it when a level trades far more volume than displayed and price fails to break through — a form of absorption.
Signs of an iceberg
| Where | What you see |
|---|---|
| DOM | Bid/offer keeps refilling after being hit |
| Time & sales | Traded volume far exceeds visible size |
| Footprint | Heavy volume at one price, little movement |
| Price | Repeated tests fail to break the level |
Reading icebergs on the DOM and footprint
On the DOM ladder, watch for a bid or offer that keeps reloading as market orders hit it. On the footprint chart, it appears as outsized volume at a single price with aggressive traders failing to push through.
Location matters more than the iceberg
An iceberg at a random price is noise; one at a key level — a prior POC, value area edge or liquidity zone — is meaningful. My daily ES & NQ orderflow levels share the locations I prepare each day, as context rather than trade signals. The full framework is in orderflow trading explained.
Mistakes to avoid
- Assuming every refill is an institution defending a level.
- Entering before price shows a reaction.
- Ignoring that icebergs can be fully filled.
Iceberg Orders FAQ
What is an iceberg order?+
A large order that shows only a small visible quantity on the order book and automatically refills as it gets filled, hiding its true size.
Why do traders use iceberg orders?+
To buy or sell size without revealing it, which reduces market impact and avoids other traders front-running the order.
How do you spot an iceberg order?+
Look for a price level that keeps trading far more volume than the visible DOM size, with the bid or offer refilling and price not moving through.
Is an iceberg order the same as absorption?+
Related. Absorption is the effect you see — aggression failing to move price. An iceberg is one way that absorption happens.
Do icebergs mean price will reverse?+
No. Icebergs can be fully filled and price can continue. Treat them as context and wait for confirmation.
Which tools detect iceberg orders?+
Platforms like Bookmap, ATAS, Sierra Chart and Quantower offer DOM, heatmap or iceberg-detection features. Check each tool's current features.