Wash trade - A "wash trade" is a matched deal, which produces neither a gain nor a loss.
Whipsaw - "Whipsaw" is a term for where a trader takes a position, and then experiences a move against it, triggering stop loss limits and liquidation of positions, followed by a reversal and move in the original direction. Normally occurs in volatile markets.
Working day - A "working day" is a day on which the banks in a currency's principal financial center are open for business. For FX transactions, a working day only occurs if the bank in both financial centers are open for business (all relevant currency centers in the case of a cross are open).
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