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      "@value" : "Κεντρική ιδέα αυτής της εργασίας είναι η αποτίμηση ενός δικαιώματος προαίρεσης ευρωπαϊκού τύπου με υποκείμενο τίτλο μια μετοχή και η αντιστάθμιση του κινδύνου από την\nκατοχή του. Δεν απαιτείται κάποια προηγούμενη γνώση στα οικονομικά, καθώς οτιδήποτε\nπέραν των στοιχειωδών γνώσεων συζητείται. Η εργασία ξεκινάει με την αναζήτηση μιας\nδιαδικασίας που περιγράφει ικανοποιητικά την κίνηση της τιμής μιας μετοχής. Απορρίπτει\nτην ιδέα της Κίνησης Brown για αυτό το σκοπό και οδηγείται στην Γεωμετρική Κίνηση\nBrown, ακολουθώντας την από τη διαφορική μορφή της ως και την αναλυτική της λύση.\nΠαρουσιάζονται δύο μοντέλα αποτίμησης, το Διωνυμικό που είναι διακριτού χρόνου και το\nBlack-Scholes-Merton που είναι συνεχούς. Και τα δύο είναι αρκετά γνωστά μοντέλα που\nμάλιστα συνδέονται. Βασικό κομμάτι αυτής της εργασίας είναι η απόδειξη της σύγκλισης\nτου διωνυμικού τύπου για το ασφάλιστρο στον τύπο των Black-Scholes-Merton, καθώς\nκαι η κατασκευή της Γεωμετρικής Κίνησης Brown ως συνεχές ανάλογο της διωνυμικής\nδιαδικασίας. Τέλος παρουσιάζονται οι συντελεστές ευαισθησίας. Χρησιμοποιώντας αρχικά\nμόνο το δέλτα αντισταθμίζεται ο κίνδυνος αγοράς ενός δικαιώματος. Σε αυτό το κομμάτι\nπροσομοιώνονται πιθανά μονοπάτια της τιμής μιας μετοχής, εφαρμόζεται η μέθοδος και\nαναλύεται το αποτέλεσμα. Στη συνέχεια με την χρήση του Γάμμα προστατεύεται η ϑέση\nμας από έναν ακόμη κίνδυνο. Η εργασία κλείνει αναλύοντας συνοπτικά και τους άλλους\nτρεις βασικούς συντελεστές."
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