Insurance & Pension Policies
Bank & Building Society Accounts

Hirschmann-Herfindahl Index

Specific measurement of market concentration, that is of the extent to which a small number of firms account for a large proportion of output. The HHI is used as one possible indicator of market power or competition among firms. It measures market concentration by adding the squares of the market shares of all firms in the industry. Where, for example, in a market five companies each have a market share of 20%, the HHI is 400 + 400 + 400 + 400 + 400 = 2000. The higher the HHI for a specific market, the more output is concentrated within a small number of firms. In general terms, with an HHI below 1000 the market concentration can be characterised as low, between 1000 and 1800 as moderate and above 1800 as high.

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Which company now looks after your policy? Who can you contact about your policy? What do all those words and phrases on my policy document actually mean?

Policy Detective is a UK company for UK customers. We help you to track-down the Administrators for policies which you or your loved ones may have in the bureau or the attic. You never know how much money there could be in that old policy. It's not easy to find this information, as companies through time are taken-over, merge with other companies and even change their names. We can help you find the company which now deals with your policy. Some companies even allow us to check the status of your policy.

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