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Corrigés des exercices - Pearson

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Tab. 7.1 : Scénarios attachés aux stratégies d’écart haussières (Bullish) et baissières (Bearish)Bull Spread de callS T K 1 K 1 S T K 2 K 2 S Tposition longue call (K 1 ) 0 S T − K 1 S T − K 1position courte call (K 2 ) 0 0 − (S T − K 2 )Total 0 S T − K 1 K 2 − K 1Bull Spread de putS T K 1 K 1 S T K 2 K 2 S Tposition longue put (K 1 ) K 1 − S T 0 0position courte put (K 2 ) − (K 2 − S T ) − (K 2 − S T ) 0Total − (K 2 − K 1 ) − (K 2 − S T ) 0Bear Spread callS T K 1 K 1 S T K 2 K 2 S Tposition courte call (K 1 ) 0 − (S T − K 1 ) − (S T − K 1 )position longue call (K 2 ) 0 0 (S T − K 2 )Total 0 − (S T − K 1 ) − (K 2 − K 1 )Bear Spread de putS T K 1 K 1 S T K 2 K 2 S Tposition courte put (K 1 ) − (K 1 − S T ) 0 0position longue put (K 2 ) K 2 − S T K 2 − S T 0Total K 2 − K 1 K 2 − S T K 2 − K 1Fig. 7.3 : Revenus à échéance <strong>des</strong> stratégies d’écarts40Écart Haussier (Bullish)Bull Spread Call40Écart Baissier (Bearish)Bear Spread Call2020payoff0payoff02020400 50 100 150 200400 50 100 150 200S TS T40Bull Spread Put40Bear Spread Put2020payoff0payoff02020400 50 100 150 200400 50 100 150 200S TS T103© 2010 <strong>Pearson</strong> France – Synthex Finance de marché – Franck Moraux

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