Traders say investors should always use limit orders, which specify the price at which they are willing to buy or sell.

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It also allows them to specify the maximum price they are willing to pay so that users receive an alert when prices drop to a certain level.

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The company did not specify the number of shares it plans to offer or a price range for them.

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"If you specify that rooms have got to be bigger then you will drive the price up, " warns Steve Turner, from the Home Builders Federation.

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