Microvision ( MVIS) was on the rise after research firm MDB Capital Group initiated coverage of the company with a buy rating. Microvision, a producer of light scanning technologies for display and imaging products, was gaining 10.3% to $3.01.

Metabolix ( MBLX) was rising after naming Matthew Strobeck and Robert Van Nostrand to its board. Strobeck is a senior investment analyst at Westfield Capital Management. He previously served as a consultant to the senior economic adviser to the commissioner of the Food and Drug Administration. Van Nostrand is the senior vice president and chief compliance officer of OSI Pharmaceuticals ( OSIP). Shares were up 10.6% to $19.25.

Virco ( VIR) surged after the company said third-quarter sales increased 4.5% from last year and that it swung to a profit. Sales reached $73.7 million, up from $70.5 million last year. Virco earned $5.8 million, or 41 cents a share, compared with a loss of $2.2 million and 17 cents a share last year. The company said it expects to incur a loss in the fourth quarter but that it will be narrower than last year's. Shares were gaining 17.8% to $7.55.

Unifi ( UFI) slumped after it cut its expectations for the December quarter. The company previously forecast earnings before interest, taxes, depreciation and amortization of $10 million to $12 million, but now it expects actual results to be less than 50% of the original guidance. Unifi was down 28.5% at $1.73.

Corriente Resources ( ETQ) was dropping after it said it will temporarily suspend work at its Mirador project in Ecuador because of protests near the site. After a number of ineffective talks with the protesters, the government has asked Corriente to temporarily halt its Mirador activities to help in the negotiating process. Shares were losing 13% to $3.90.

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