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Tuesday's Small-Cap Winners & Losers

Globalstar falls due to concerns over deterioration of its satellites.


(GSAT) - Get Globalstar, Inc. Report

plunged more than 26% after the company said that performance degradation in some of its satellites is accelerating at a faster rate than anticipated and that it might not be able to correct the problem.

If the deterioration continues unabated, the company predicts that, following a steady decline in mobile communications services, all of Globalstar's current satellites will essentially be out of commission by 2008 for those purposes. The Milpitas, Calif., company had surmised early last year that the problem was workable until the launch of a new breed of satellites in 2009.

Wachovia downgraded the stock to market perform from outperform, while an analyst with J.P. Morgan said that investors were overreacting and maintained his overweight rating on the company. Shares were losing $3.84 to $10.64.

Dawson Geophysical

(DWSN) - Get Dawson Geophysical Company Report

, which sells services for oil and gas exploration, was riding high after it smashed Wall Street expectations for the fiscal first quarter. The Midland, Texas, company earned $5.4 million, or 71 cents a share, compared with last year's $2.3 million, or 30 cents a share. Revenue was up 51% to $53.7 million. Analysts polled by Thomson Financial were expecting income of 58 cents a share on sales of $49.7 million. Shares were gaining $4.96, or 13.9%, to $40.68.

Online financial-rate publisher



jumped after it posted fourth-quarter earnings of $5.2 million, or 27 cents a share, excluding items, beating Wall Street estimates by 3 cents a share. Year-ago profits totaled $2.6 million, or 15 cents a share. Sales leapt 49% from last year to $20.7 million, just edging past estimates. The Florida-based company was up $5.36, or 13.8%, to $44.14.

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Hoku Scientific


shot up after the Hawaii-based company extended its planned polysilicon contract with German solar power developer


. Hoku, which makes clean energy technologies, now expects to see about $175 million worth of polysilicon sales over several years under the deal, up from a prior estimate of between $120 million and $140 million. Shares were rising 45 cents, or 8.4%, to $5.78.

Shares of

Movie Gallery


were higher after the Alabama-based company said it would refinance its existing senior secured credit facility. The transaction, which will be arranged by Goldman Sachs, is expected to close within the first quarter. The video-store chain's stock was rising 34 cents, or 9.1%, to $4.11.

Oncolytics Biotech

(ONCY) - Get Oncolytics Biotech Inc. Report

sank after the Canada-based company said it will sell about $10.2 million worth of stock and purchase warrants (converted from Canadian dollars), with an underwriter's option worth about $1.5 million. The offer will likely close Feb. 22. Shares were trading down 40 cents, or 14.7%, to $2.33.