# 1.5.3 Annualised Returns

The annualised rate of return (ARR) is geometric, time-weighted, and calculated by compounding index-level period returns. The measure gives an equal weight to each period. is reported in various horizons: the current quarter, one, three, five and 10 years, and the rate since inception of the index.

where:

is the annualised rate of return for a given period of time *n.*

denotes the quarterly A.1 - 1.5.2 Total Investment Return of the index.*n* denotes the given time period.