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Questions tagged [derivatives]

A financial contract whose payoff is linked to the evolution of an underlying security.

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Log-moneyness definition [closed]

Define the time-0 log-moneyness of a call on stock $S$ with strike $K$ and expiry $T$ to be: $$\log(S(0)\exp(rT)/K)$$ What does it mean for the strikes K to be at-the-log-moneyness?? I guessed this ...
-3
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1answer
284 views

Increasing the correlation of two asset reduce the value of spread option.

We know the payment function of Spread option is $$\max\{X_T - Y_T-K,0\}$$ here $$d X_t = (\mu_x - D_x)X_t dt + \sigma_xX_td W^x_t$$ $$d Y_t = (\mu_y - D_y)Y_t dt + \sigma_yY_td W^y_t$$ $$d W^x_td W^...
-4
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1answer
891 views

Why do we need derivatives? [closed]

I read somewhere that derivatives are the biggest weapons of financial destruction. Why do we need derivatives? If exploiting risk-proneness of people to make profit is the goal, why don't we stop ...