Business and Personal Finance Dictionary

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• PIN RISK
  
  Is the uncertainty that an option position may be exercised into the underlying instrument. It is risky because it often refers to markets flirting with the prevailing at-the-money level. At such times, the gamma on a position is very erratic and difficult to hedge. Also, there are doubts about the exercise or assignment process. A trader can experience significant changes in net positions due to option exercises.
  
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