Volatilità di Alumina Limited è 1.88%
Volatilità o percentuale dell'intervallo reale medio (ATRP 14) è l'ATR espresso come percentuale del prezzo di chiusura.
Average true range percent (ATRP) measures volatility on a relative level. This is opposed to the ATR, which measures volatility on an absolute level. ATRP allows securities to be compared whereas ATR does not. That means lower-priced stocks won't necessarily have lower ATR values than higher-priced stocks.
The period used in the calculation is 14 days and the normalized indicator oscillates between 0 and 100 percent of recent price variation. Importantly, the indicator doesn't predict the direction of price but it describes the current volatility. The volatility is comparable across all securities and all markets.
Volatility expresses the degree of price movement. The use of ATRP as volatility compared to ATR is preferred in cases when different securities or different time periods are compared. Examples are stock screening, filtering strategies, and studying seasonality and volatility patterns over long periods of time and different markets
Alumina Limited, through its 40% interest in Alcoa World Alumina and Chemicals, engages in bauxite mining, alumina refining, and aluminum smelting businesses. The company has a network of bauxite mines and alumina refineries in Australia, Guinea, Brazil, and Spain, and Saudi Arabia; and a 55% interest in the Portland aluminium smelter in Victoria, Australia. It is also involved in shipping operations. The company was formerly known as WMC Limited and changed its name to Alumina Limited in December 2002 as part of the demerger of the WMC Group. Alumina Limited was incorporated in 1970 and is headquartered in Southbank, Australia.