In any forex trading, a pip is the smallest unit of price for any foreign currency. Nearly all currency pairs consist of five significant digits, and most pairs have the decimal point immediately after the first digit; that is, EUR/USD equals 1.2812. In this instance, a single pip equals the smallest change in the fourth decimal place, that is, 0.0001. Therefore, if the quote currency in any pair is USD, then one pip always equals 1/100 of a cent.
One notable exception is the USD/JPY pair, where a pip equals US$0.01 (one U.S. dollar equals approximately 107.19 Japanese yen). Pips sometimes are called points. Just as a pip is the smallest price movement (the y axis), a tick is the smallest interval of time along the x axis that occurs between two trades. (Occasionally, the term tick is also used as a synonym for pip.) When trading the most active currency pairs (such as EUR/USD and USD/JPY) during peak trading periods, multiple ticks may (and will) occur within the span of one second. When trading a low-activity minor cross-pair (such as the Mexican peso and the Singapore dollar), a tick may occur only once every two or three hours.
In forex trading ticks, therefore, do not occur at uniform intervals of time. Fortunately, most historical data vendors will group sequences of streaming data and calculate the open, high, low, and close over reg- ular time intervals (1, 5, and 30 minutes, 1 hour, daily, and so on).
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