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"An iceberg order, also known as an iceberg or hidden order, is a type of order in financial markets where only a portion of the total order quantity is displayed to the market, while the remaining quantity remains hidden or undisclosed."
What is Iceberg Order?
The intention behind an iceberg order is to prevent the full size of the order from being immediately visible to other market participants, thus minimizing the impact on the market price.
The visible portion of the iceberg order is typically a small percentage of the total order size, often referred to as the "display quantity." The display quantity is usually set to a level that will not significantly affect the supply and demand dynamics of the market. This allows traders to discreetly execute large orders without causing significant price fluctuations.
The hidden or undisclosed portion of the iceberg order is referred to as the "reserve quantity." It remains unseen by other market participants until the visible portion is filled. As the visible quantity is executed, additional portions of the reserve quantity are automatically displayed until the entire order is completed. This gradual disclosure of the hidden quantity helps to prevent order book imbalance or excessive market impact.
Iceberg orders are commonly used by institutional investors and large traders who need to execute sizable orders without causing excessive price movement or revealing their full trading intentions to the market. By hiding the true size of the order, iceberg orders aim to minimize market participants' reactions and prevent front-running or price manipulation.
It is worth noting that the use of iceberg orders may vary across different trading platforms and exchanges. The specific mechanics and parameters of iceberg orders, such as the display quantity and increment size, can be customized based on the trader's preferences and the rules of the trading venue.
Overall, iceberg orders provide a way for traders to tactically execute large orders while minimizing market impact. By gradually revealing the hidden quantity, iceberg orders strike a balance between achieving order execution objectives and maintaining market liquidity and stability.
Let's consider an example to illustrate how an iceberg order works:
Suppose an institutional investor wants to buy a large quantity of shares in Company XYZ, which is currently trading at $50 per share. The investor has a total order size of 50,000 shares but wants to avoid creating significant price movement by revealing the full size of the order at once. They decide to use an iceberg order with a display quantity of 1,000 shares and a reserve quantity of 49,000 shares.
The investor places the iceberg order to buy 1,000 shares of Company XYZ at the market price. Initially, only the display quantity of 1,000 shares is visible in the order book, indicating their intention to buy a smaller quantity. Other market participants see this displayed quantity and may choose to trade with it.
As the visible quantity is executed, let's say 200 shares are filled. The remaining visible quantity decreases to 800 shares. At the same time, another portion of the reserve quantity is automatically displayed, such as an additional 1,000 shares. Now, the order book shows a visible quantity of 800 shares and a reserve quantity of 48,800 shares.
This process continues as the visible quantity is executed and the reserve quantity is gradually disclosed. The order book displays only a fraction of the total order size, making it appear as if the investor is buying smaller quantities. This helps avoid arousing suspicion or triggering aggressive price movements due to the large order size.
By using an iceberg order, the investor can discreetly buy the entire 50,000 shares of Company XYZ without significantly impacting the market price. The gradual disclosure of the reserve quantity allows the investor to execute the order over time, taking advantage of existing liquidity and avoiding potential market disruptions.
It's important to note that the parameters of an iceberg order, such as the display quantity and reserve quantity, can be customized based on the trader's preferences and the rules of the trading platform or exchange. The example above is simplified for illustration purposes and may not reflect the exact mechanics or quantities used in real-world trading scenarios.