Alumina (ASX:AWC) share price cools off but it’s up 19% in September. Here’s why

The Alumina Ltd (ASX: AWC) share price has been outpaced by its ASX benchmarks over the last few weeks.

Whereas the S&P/ASX 200 Index (ASX: XJO) has slipped 2.6% into the red over the last month, Alumina shares have soared 19% in September alone and…