Derivative Financial instrument whose payoff depends on the value
Derivative Financial instrument whose payoff depends on the value

...  For a call : 0 < Δ < 1. For a put : −1 < Δ < 0  Deep in the money : close to 1 (any variation of the underlying is directly added to the price of the call). At the money : close to 0.5. Out of the money : Close to 0  Hence delta positive means bullish expectation, delta negative for bearish. Del ...
Valuing Stock Options: The Black
Valuing Stock Options: The Black

Greeks (finance)

In mathematical finance, the Greeks are the quantities representing the sensitivity of the price of derivatives such as options to a change in underlying parameters on which the value of an instrument or portfolio of financial instruments is dependent. The name is used because the most common of these sensitivities are denoted by Greek letters (as are some other finance measures). Collectively these have also been called the risk sensitivities, risk measures or hedge parameters.