Stock Price Processes with Infinite Source Poisson Agents

Details Stock Price Processes with Infinite Source Poisson Agents Stock Price Processes with Infinite Source Poisson Agents

2011-06-30

arxiv.org/abs/1106.6300v1

Mathematics

Probability

Scientific paper

We construct a general stochastic process and prove weak convergence results. It is scaled in space and through the parameters of its distribution. We show that our simplified scaling is equivalent to time scaling used frequently. The process is constructed as an integral with respect to a Poisson random measure which governs several parameters of trading agents in the context of stock prices. When the trading occurs more frequently and in smaller quantities, the limit is a fractional Brownian motion. In contrast, a stable Levy motion is obtained if the rate of trading decreases while its effect rate increases.

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