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Modelli per il Calcolo del Value at Risk

Modelli per il Calcolo del Value at Risk

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Vol<strong>at</strong><strong>il</strong>ità mens<strong>il</strong>e <strong>del</strong> valore <strong>del</strong> portafoglio<br />

( ) 2<br />

$ 7,<br />

7⋅<br />

0,<br />

0583 + ( −$<br />

16⋅0,<br />

0118)<br />

2×<br />

( −0,<br />

114)<br />

×<br />

( $ 7,<br />

7⋅<br />

0,<br />

0583)<br />

× ( −$<br />

16⋅0,<br />

0118)<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 />

⇓<br />

2<br />

+<br />

=<br />

$ 506,<br />

45<br />

VaR(1 mese; 99%) <strong>del</strong> portafoglio è pari a:<br />

2,33 × $ 506,45 = $ 1,18 mld<br />

⇓<br />

Perdita effettiva: $ 1,3 mld<br />

37

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