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Stock Returns and Market Making with Inventory

  • Park, Seyoung (Department of Industrial and Management Eng., POSTECH) ;
  • Jang, Bong-Gyu (Department of Industrial and Management Eng., POSTECH)
  • Received : 2012.04.23
  • Accepted : 2012.06.11
  • Published : 2012.11.30

Abstract

We study optimal trading strategy of a market maker with stock inventory. Following Avellaneda and Stoikov (2008), we assume the stock price follows a normal distribution. However, we take a constant expected rate of the stock return and assume that the stock volatility is an inverse function of the stock price level. We show that the optimal bid-ask spread of the market maker is wider for a higher expected rate of stock returns.

Keywords

References

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