Eighty-one companies in the Bloomberg Star Tribune 100 Index lost ground in Tuesday's markets sell-off. Shares of the 10 largest losers all dropped more than 5 percent.

Company 1-day % chg.

ValueVision Media Inc. -12.1

SurModics Inc. -10.1

Multiband Corp. -7.9

WSI Industries Inc. -7.5

Polaris Industries Inc. -7.0

Select Comfort Corp. -6.4

Northern Oil and Gas Inc. -5.5

Christopher & Banks Corp. -5.4

Life Time Fitness Inc. -5.2

Entegris Inc. -5.2