The Associated PressNEW YORK (AP) ¿ The following stocks were among those that moved substantially or traded heavily Monday on the New York Stock Exchange: NYSE: KBR Inc., down $1.41 at $22.61 An analyst downgraded the military contractor and said profit could decline significantly this year as U.S. troops exit Iraq. ION Geophysical Corp., up 90 cents at $4.44 The world's largest land seismic contractor announced a global joint venture that will dramatically cut its debt. RadioShack Corp., up $2.49 at $18.15 RadioShack's third-quarter profit slipped as it closed some kiosks and dealt with a continued pullback in consumer spending. Symmetry Medical Inc., down $1.72 at $7.84 Symmetry slashed its annual profit and revenue forecasts, saying demand from orthopedic and non-orthopedic customers has been weak. NASDAQ: Ares Capital Corp., up $1.30 at $11.99 The finance company will buy Allied Capital Corp., which provides financing for buyouts, in an all-stock deal worth $648 million. WebMD Health Corp., down 21 cents at $34.07 An analyst raised his rating on the stock after the health Web site operator completed a merger with HLTH Corp., its former parent. Sohu.com Inc., down $11.43 at $59.92 The major Chinese Web portal's quarterly earnings fell on lower revenue from its online games unit, while total sales rose to a record. BioCryst Pharmaceuticals Inc., up $1.28 at $10.94 The experimental drug peramivir received emergency use authorization from the Food and Drug Administration as a swine flu treatment.