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Modelli per il Calcolo del Value at Risk

Modelli per il Calcolo del Value at Risk

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Se gli h f<strong>at</strong>tori di rischio sono rappresent<strong>at</strong>i da<br />

variab<strong>il</strong>i di merc<strong>at</strong>o aventi rendimento<br />

le variazioni di valore <strong>del</strong> portafoglio sono d<strong>at</strong>e da<br />

dΠ<br />

=<br />

=<br />

R<br />

h<br />

∑<br />

i=<br />

1<br />

h<br />

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i=<br />

1<br />

=<br />

Δ<br />

Δ<br />

∑<br />

i=<br />

1<br />

∑<br />

i=<br />

1<br />

Slides AB <strong>Mo<strong>del</strong>li</strong> <strong>per</strong> <strong>il</strong> calcolo <strong>del</strong> <strong>Value</strong> <strong>at</strong> <strong>Risk</strong><br />

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dW<br />

W<br />

W<br />

i<br />

i<br />

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dW<br />

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1<br />

2<br />

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2<br />

i<br />

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= 1,...,h<br />

Γ<br />

i<br />

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)<br />

R<br />

i<br />

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)<br />

2<br />

57

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