Martingales and arbitrage in securities markets with transaction costs
Kallal, Hedi; Jouini, Elyès (1995), Martingales and arbitrage in securities markets with transaction costs, Journal of Economic Theory, 66, 1, p. 178-197. http://dx.doi.org/10.1006/jeth.1995.1037
Type
Article accepté pour publication ou publiéDate
1995-06Journal name
Journal of Economic TheoryVolume
66Number
1Publisher
Elsevier
Pages
178-197
Publication identifier
Metadata
Show full item recordAbstract (EN)
We derive the implications from the absence of arbitrage in dynamic securities markets with bid-ask spreads. The absence of arbitrage is equivalent to the existence of at least an equivalent probability measure that transforms some process between the bid and the ask price processes of traded securities into a martingale. The martingale measures can be interpreted as possible linear pricing rules and can be used to determine the investment opportunities available in such an economy. The minimum cost at which a contingent claim can be obtained through securities trading is its largest expected value with respect to the martingale measures.Subjects / Keywords
Investment; linear pricing rules; bid-ask spreadsRelated items
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