SINGAPORE (Reuters) - Shares in Noble Group dropped 6 per cent to a one-week low of S$1.015 on Wednesday.

The stock was on course for its biggest daily decline in a year, after the company posted a sharp fall in third-quarter net profit.

The Hong Kong-based commodities trader reported a 70 per cent drop in its net profit for the three months ended September, it said on Tuesday.

This was largely due to losses in its associate Yancoal Australia.