The company's shares recently dropped to a four-week low.

VOA: standard.2009.10.15

Under his control, the stock sank to a low 52 week low of 2.10 after a public spat with Clearwire drove both stocks to extreme low prices in the fall of 2011.

FORBES: Softbank Must See The Value in Clearwire's 2.5 Ghz Spectrum

The index hit a nine-week low last week.

FORBES: Comex Gold Modestly Higher Following Greece Government Passing Austerity Measures

Aluminum and tin also fell to seven-week lows Monday, while nickel hit a nearly 10-week low and zinc hit an eight-week low.

FORBES: Base Metals Slide In Recent Weeks On Demand Worries; Better Days Seen Ahead