Iceberg Order
An iceberg order is a large limit order that exposes only a small display quantity to the public order book. As the visible quantity trades, more size is released from a hidden reserve. The market sees the tip; the total quantity remains hidden.
Some exchanges support native iceberg or reserve orders. A trader can also reproduce similar behavior with an execution algorithm that submits a new child order whenever the previous one fills.
How an iceberg order works
Suppose a participant wants to buy 100 BTC without displaying the full order:
- A 5 BTC bid appears at a chosen price.
- Trades consume the visible 5 BTC.
- Another 5 BTC appears at the same price.
- Replenishment continues until the reserve is filled, cancelled or moved.
Hiding the total size reduces the information revealed to other participants. A fully displayed order can change quotes, attract competing orders or increase the cost of completing the trade.
How to Investigate Possible Crypto Market Manipulation walks through this in more detail.
What an iceberg looks like on the tape
The hidden reserve is not printed as a separate field in ordinary public market data. It is inferred from the relationship between trades and displayed depth. Common clues include:
- executed volume at one price greatly exceeding the quantity that was displayed;
- a similar displayed quantity repeatedly returning after fills;
- many trades at the same level without the expected price movement;
- persistent absorption of aggressive buying or selling.
No single print proves that a native iceberg exists. Several participants can quote at the same price, and an execution algorithm can create the same footprint. The useful observation is the replenishing liquidity and its effect on the tape, not the label attached to the order type.
Iceberg order vs spoofing
An iceberg is intended to trade while concealing its full size. A spoof order is displayed to influence other participants and is normally cancelled before execution. The practical distinction appears in the tape:
- iceberg or replenishing liquidity: the displayed size is repeatedly executed;
- spoof-like behavior: the displayed size moves or disappears as the market approaches it.
Both behaviors must be evaluated over time. A visible wall can be cancelled, and replenishing liquidity can stop once the participant finishes or changes its execution plan.
Why iceberg orders matter
Icebergs help explain why price can stall at a level even when the visible book appears thin. Aggressive orders keep arriving, yet hidden or algorithmically replenished liquidity absorbs them. When that liquidity is exhausted or withdrawn, the balance at the level changes and price can begin moving again.
This makes iceberg analysis useful for understanding:
- where large execution is taking place;
- whether aggressive flow is being absorbed;
- why displayed depth understates traded liquidity;
- when a previously persistent level stops replenishing.
The Kingfisher tape and order-flow workspace lets traders compare live trades with changes in displayed liquidity across venues. The relevant evidence is the sequence: what traded, what replenished and how price reacted.