SINGAPORE: Shares of commodity trader Noble Group Ltd fell 4.6 percent in early trade on Monday to its lowest level in about a year, its second straight session of decline after reporting a quarterly loss last week.

The shares were the biggest losers in a broader market which was flat.

Singapore-listed Noble's stock has lost nearly 23 percent of its value since obscure research firm Iceberg Research issued reports last month questioning the company's accounting standards.

Copyright Reuters, 2015