Growth optimal investment and pricing of derivatives

Erik Aurell, Roberto Baviera, Ola Hammarlid, Maurizio Serva and Angelo Vulpiani

Physica A: Statistical Mechanics and its Applications, 2000, vol. 280, issue 3, 505-521

Abstract: We introduce a criterion how to price derivatives in incomplete markets, based on the theory of growth optimal strategy in repeated multiplicative games. We present reasons why these growth-optimal strategies should be particularly relevant to the problem of pricing derivatives. Under the assumptions of no trading costs, and no restrictions on lending, we find an appropriate equivalent martingale measure that prices the underlying and the derivative security. We compare our result with other alternative pricing procedures in the literature, and discuss the limits of validity of the lognormal approximation. We also generalize the pricing method to a market with correlated stocks. The expected estimation error of the optimal investment fraction is derived in a closed form, and its validity is checked with a small-scale empirical test.

Date: 2000
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:280:y:2000:i:3:p:505-521

DOI: 10.1016/S0378-4371(00)00005-4

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