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Informed Option Trading Strategies

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Author Info
Jong, C.M. de (Erasmus Research Institute of Management (ERIM), RSM Erasmus University)
Abstract

We use a sequential trade model to clarify two mechanisms following the introduction of an option that may lead to increased efficiency in the underlying. On the one hand, market makers learn from trades in the option market and set more accurate prices. On the other hand, the proportion of informed traders in the stock market may be altered depending on the informed traders' strategies. If insiders trade a larger fraction than uninformed traders in the stock, for example because the immediate profits in the stock are larger, spreads in the stock widen, and price errors may increase. This reduces the efficiency increase from the 'learning' effect, possibly to the extent that overall efficiency deteriorates. We use simulations to analyze the resulting impact in a dynamic setting. For realistic parameter values we find that option trading leads to lower price errors in the underlying. The more popular options are, the more quickly information is incorporated in the underlying prices. However, uninformed traders do not necessarily benefit from this speedier convergence. Their stock performance crucially depends on the insider's trading strategy and the fraction of informed trading.

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Publisher Info
Paper provided by Erasmus Research Institute of Management (ERIM), ERIM is the joint research institute of the Rotterdam School of Management, Erasmus University and the Erasmus School of Economics (ESE) at Erasmus University Rotterdam. in its series Research Paper with number ERS-2001-55-F&A Revision_Date: 2008-11-19.

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Date of creation: 18 Oct 2001
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Handle: RePEc:dgr:eureri:2001115

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Web page: http://www.erim.eur.nl/

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Related research
Keywords: Options; market efficiency; price discovery; asymmetric information; leverage;

This paper has been announced in the following NEP Reports:

References listed on IDEAS
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  1. Biais, Bruno & Hillion, Pierre, 1994. "Insider and Liquidity Trading in Stock and Options Markets," Review of Financial Studies, Oxford University Press for Society for Financial Studies, vol. 7(4), pages 743-80. [Downloadable!] (restricted)
  2. Fleming, Jeff & Ostdiek, Barbara, 1999. "The impact of energy derivatives on the crude oil market," Energy Economics, Elsevier, vol. 21(2), pages 135-167, April. [Downloadable!] (restricted)
  3. Skinner, Douglas J., 1989. "Options markets and stock return volatility," Journal of Financial Economics, Elsevier, vol. 23(1), pages 61-78, June. [Downloadable!] (restricted)
  4. Raman Kumar & Atulya Sarin & Kuldeep Shastri, 1998. "The Impact of Options Trading on the Market Quality of the Underlying Security: An Empirical Analysis," Journal of Finance, American Finance Association, vol. 53(2), pages 717-732, 04. [Downloadable!] (restricted)
  5. David Easley & Maureen O'Hara & P.S. Srinivas, 1998. "Option Volume and Stock Prices: Evidence on Where Informed Traders Trade," Journal of Finance, American Finance Association, vol. 53(2), pages 431-465, 04. [Downloadable!] (restricted)
  6. Back, Kerry, 1993. "Asymmetric Information and Options," Review of Financial Studies, Oxford University Press for Society for Financial Studies, vol. 6(3), pages 435-72. [Downloadable!] (restricted)
  7. Damodaran, Aswath & Lim, Joseph, 1991. "The effects of option listing on the underlying stocks' return processes," Journal of Banking & Finance, Elsevier, vol. 15(3), pages 647-664, June. [Downloadable!] (restricted)
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