Price fluctuation data on U.S. companies is widely available on the internet for free.

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While the cash figures for the first year are guaranteed, the Department for Communities and Local Government said subsequent payments were "indicative" and could fluctuate by 10% either way depending on work progress and fluctuation in local markets.

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"Exchange rates fluctuate on a daily basis and even a small fluctuation can potentially save the customer money, " he adds.

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Compared with surprise resignations or crisis-related upheavals, planned CEO transitions lead to a narrower range of stock-price fluctuation for a company, both on the day of the announcement and six months later, according to research findings by FTI Consulting Inc.

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Options are trading at one third more than the historic volatility on the underlying shares--offering strong indication that traders are bracing for sudden fluctuation.

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Look, there are certain brands that are represented here today that, based on their previous -- based on the line of cars that they have, don't have a great fluctuation in their corporate average fuel economy.

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