Shares of US Airways (NYSE:

) gained about 5% after the company reported a 5.7% rise in its total December mainline traffic. The company's mainline traffic came in at 4.7 billion revenue passenger miles. LCC's total December capacity increased 3.7% y/y to 5.9 billion available seat miles. LCC's load factor for the period came in at 80.8%, versus 79.3% in the year-ago period. The company's total unit revenue increased around 5% for the period. Shares of Atheros Communications Inc (NASDAQ:

) gained about 1.2% after Qualcomm Inc (NASDAQ:

) agreed to purchase ATHR for $3.2 billion, or $45 per share in cash, representing a 22% premium over ATHR's closing price on Monday. The deal has been approved by the boards of both companies. QCOM is expecting the deal to close in the first half of this year. Shares of Autodesk Inc (NASDAQ:

) surged about 6.2% after analysts at Goldman Sachs upgraded the stock from “neutral” to “buy.” The target price for ADSK is set to $50. ADSK shares have advanced 52.41% over the past 52 weeks, while the S&P 500 index has gained 11.76% in the same period. Retail stocks dropped as Family Dollar Stores Inc (NYSE:

) reported weaker-than-expected FQ1 earnings. FDO shares lost about 7.8% following the results. US private-sector employment rose by 297,000 in December. The S&P Retail Index (RLX) fell about 1.24%. Some of the other decliners in the list included BJ's Wholesale Club Inc (NYSE:

), Dollar General Corp. (NYSE:

) and Dollar Tree Stores Inc (NASDAQ:

). Read more