The Role of Liquidity Individuals in the Decision-Making

Steinbacher, Matjaz (2009): The Role of Liquidity Individuals in the Decision-Making.

Abstract

We simulate social network games of a portfolio selection to analyze the role of liquidity individuals for the developments in individuals’ decision-making in financial markets. Liquidity individuals prove to be a significant element in the decision-making process of the entire network, as they keep the information of non-dominant strategies alive. Their role is especially significant under omniscient individuals, whereas a little less under non-omniscient individuals. As long as individuals do not lose the information of all the alternatives, their role is insignificant.

• Item Type: MPRA Paper
• Language: English
• Keywords: social networks, portfolio analysis, stochastic finance
• Subjects: G - Financial Economics > G1 - General Financial Markets > G11 - Portfolio Choice; Investment Decisions; Z - Other Special Topics > Z1 - Cultural Economics; Economic Sociology; Economic Anthropology > Z13 - Economic Sociology; Economic Anthropology; Social and Economic Stratification; C - Mathematical and Quantitative Methods > C7 - Game Theory and Bargaining Theory > C73 - Stochastic and Dynamic Games; Evolutionary Games; Repeated Games

References

Axelrod, R. (1984). The Evolution of Cooperation. New York: Basic Books.

Banerjee, A. (1992). A Simple Model of Herd Behavior. Quarterly Journal of Economics, 107(3), 797-818.

Bikhchandani, S., Hirshleifer, D., Welch I. (1998). Learning from the Behavior of Others: Conformity, Fads, and Information Cascades. Journal of Economic Perspectives, 12(3), 151-170.

Hayek, F.A. (1945). The Use of Knowledge in Society. American Economic Review, 35(4), 519-530.

Hirshleifer, D. (2001). Investor Psychology and Asset Pricing. Journal of Finance, 56(4), 1533-1597.

Osborne, M., Rubinstein, A. (1990). Bargaining and Markets. New York: Academic Press.

Rubinstein, A. (1998). Modeling Bounded Rationality. Cambridge: MIT Press.

Szabó, G., Tőke C. (1998). Evolutionary Prisoner’s Dilemma Game on a Square Lattice. Physical Review E, 58(1), 69-73.

Wasserman, S., Faust K. (1998). Social Network Analysis: Methods and Applications. Cambridge: Cambridge University Press.

Watts, D., Strogatz S. (1998). Collective Dynamics of Small World Networks. Nature, 393(4), 440-442.