Page 36 - FINAL CFA SLIDES DECEMBER 2018 DAY 5
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Session Unit 4:
    LOS 15.g: Describe the use and limitations
    of concentration measures in identifying                            15. The Firm & Market Structures
    market structure., p.41.




      Herfindahl-Hirschman Index (HHI) sum of the squares of the market shares of the largest firms



































     Both ignore barriers to entry!                   Market share not equal to pricing power if entry barriers
                                                      are low!
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