Rising Dollar Weighs Down Commodities

On the upside

Shares of OSI Systems (Nasdaq: OSIS), which makes explosive materials detection equipment, continued to rise over expectations that its technology will be in demand after the failed Christmas Day attempted bombing.

The Department of Interior lifted the suspension on Kforce (Nasdaq: KFRC) and will allow the company to participate in federal work projects.

Magic Software Enterprises (Nasdaq: MGIC) declared a dividend of $0.50 per share payable on January 25, 2010 to shareholders of record January 11, 2010.

On the downside

Trico Marine (Nasdaq: TRMA) warned of lower fourth quarter earnings and amended its credit agreement.

The International Trade Commission determined that no infringement of Tessera Technologies' (Nasdaq: TSRA) patents has been demonstrated.

Shares of Fannie Mae (NYSE: FNM) and Freddie Mac (NYSE: FRE) fell as investors locked in profits. The two mortgage giants surged after the government lifted financial assistance caps last week.

In the broad market, declining issues outpaced advancers by a margin of 5 to 3 on the NYSE and by more than 9 to 7 on Nasdaq. The Russell 2000 which tracks small cap stocks lost 2 points to 631.