标题: HHI 1000 or 0.1 [打印本页] 作者: anshultongia 时间: 2011-7-13 16:44 标题: HHI 1000 or 0.1
if HHI is more than 1800, it is controled by few companies, if we remove the percentage, does it mean if HHI>0.18, industry is controled by few.
if HHI=0.15, does it mean we have SQRT(1/0.15 )=2 equal size companies?作者: Kapie 时间: 2011-7-13 16:44
why sqrt?
1/HHI = 1/0.15 ~~ 7 companies...
CP作者: YAhmed 时间: 2011-7-13 16:44
thanks, if HHI>0.18, does every change of 0.0015, government will intervene?
because HHI=square of market share, you need squart.
if your answer is 7 equal size companies, then what's the size?作者: random_walker47 时间: 2011-7-13 16:44
linping85 Wrote:
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> thanks, if HHI>0.18, does every change of 0.0015,
> government will intervene?
> because HHI=square of market share, you need
> squart.
>
> if your answer is 7 equal size companies, then
> what's the size?
I though govt will interfere with every change of 0.005, since the market is highly concentrated by one or few companies.
