# Page History

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All EDHECinfra index data is generated with a value of 1000 on Q1 2005 ( ) for indices starting on or before this date, and their inception date for indices starting after this date.

Starting from a base value of 1000, each successive index value is calculated by multiplying the preceding index value by (1 + quarterly return).

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Index _{t=0} = 1000

LaTeX Math Block
Index _{t} = Index _{t-1} \times (1 + TR_{t})

where

LaTeX Math Inline
body TR_{t}
is the Total Investment Return of the index.