Value Date
The maturity date of a foreign exchange contract, at which time two currencies are exchange. A spot deal is usually done for value two business days from the trading date.
Variation Margin
The minimum funds required by an FX brokerage firm to support an open position.
Violation of a Trendline
When a currency trades below an uptrend line or above a downtrend line.
Volatility
A measure the tendency of price to move up and down, based on its daily price history over the some time period ranging from 30 days to 12 months