What’s Moving These Shares April 5th?

The Dow Jones (NYSE:DIA) is higher at 12,429, the S&P 500 (NYSE:SPY) is increasing to 1336 and the Nasdaq (NASDAQ:QQQ) is above 2,800 on the 65th trading day of 2011, and here is a group of stocks making moves on our radar and the reasons why:

1) National Semiconductor Corporation (NYSE:NSM): Shares of National Semiconductor are trading higher 71.50% to $24.13 per share today. Over 136 million shares have traded hands. Texas Instruments (NYSE:TXN) agreed to purchased NSM for $6.5 billion. National Semiconductor Corporation designs, develops, manufactures, and markets a wide variety of analog and mixed-signal integrated circuits. The Company produces systems on a single chip as well as analog, mixed-signal, and other multichip integrated circuits. National provides solutions for the information appliance, personal computing, consumer, and communication markets.

2) Inspire Pharmaceuticals, Inc. (NASDAQ:ISPH): Shares of Inspire Pharmaceuticals are trading higher 24.62% to $4.95 per share today. Merck (NYSE:MRK) announced it will acquire the company for roughly $430 million. As we’ve mentioned prior, there is much speculation rising for Insmed (NASDAQ:INSM) as we’ve seen the stock rise from the $5 range to $8 per share rather quickly. Pharma M&A is heating up. Inspire Pharmaceuticals, Inc. discovers and develops pharmaceutical products to treat diseases that result from deficiencies in the body’s natural mechanisms of mucosal hydration. The Company’s lead products target respiratory and opthtalmic diseases with inadequate current treatments, including a respiratory for chronic bronchitis and an opthtalmic for dry eye disease.

3) Microsoft Corporation (NASDAQ:MSFT): Shares are up 1.5% to $25.95 per share today. Over 50 million shares have traded hands. The Nasdaq announced changes in weighting their index that benefit MSFT. Microsoft Corporation develops, manufactures, licenses, sells, and supports software products. The Company offers operating system software, server application software, business and consumer applications software, software development tools, and Internet and intranet software. Microsoft also develops video game consoles and digital music entertainment devices.

4) KB Home (NYSE:KBH): Shares of KB Home are trading lower 3.6% to $11.74 per share today. Over 11.52 million shares have traded hands. The homebuilder lost $114.5 million, or $1.49 a share, relative to a loss of $54.7 million, or $.71 cents a share, a year earlier. Analysts were expecting $.27 cents a share. Revenues dropped 25% to $196.9 million, missing the Street’s expectation of $223.6 million.KB HOME builds single-family homes in the United States, primarily targeting first-time and first move-up homebuyers. The Company has operating divisions in Arizona, California, Colorado, Florida, Georgia, Illinois, Nevada, Wisconsin, New Mexico, North Carolina, South Carolina, and Texas in the United States. KB Home also derives income from mortgage banking, title and insurance services.

5) Intersil Corporation (NASDAQ:ISIL): Shares are up over 9.65% to $13.29 per share today. Over 6.5 million shares have traded hands. The news of a hot tech M&A market is giving a major lift to the other chip stocks today. Intersil Corporation designs and manufactures high performance analog semiconductors. The Company’s products are used in flat panel displays, optical storage, and power management applications.

6) Questcor Pharmaceuticals, Inc. (NASDAQ:QCOR): Shares of Questcor Pharmaceuticals are trading higher 22.5% to $18.27 per share today. Over 5 million shares have traded hands. The company upped its guidance and investors are happy. QCOR plans to report first quarter revenue of about $48.6 million, higher than $34.3 million in sales expected by analysts on the Street consensus. Questcor Pharmaceuticals, Inc. develops and commercializes novel central nervous system-focused therapeutics that address significant unmet medical needs. The Company’s primary product is a natural source adrenocorticotropic hormone indicated for the treatment of acute exacerbations of multiple sclerosis, as well as a number of other conditions.

7) Texas Instruments Incorporated (NYSE:TXN): Shares of Texas Instruments Incorporated are trading higher 1.88% to $34.75 per share today. Over 22 million share have traded hands. The tech company is growing its presence in 2011 with the recent acquisition of National Semiconductor (NYSE:NSM). Texas Instruments Incorporated is a global semiconductor company that designs and supplies analog technologies, digital signal processing (DSP) and microcontroller (MCU) semiconductors. The Company also operates materials and controls, and educational and productivity solutions businesses. Texas Instruments has manufacturing or sales operations in countries around the world.

8) Cubist Pharmaceuticals, Inc. (NASDAQ:CBST): Shares of Cubist Pharmaceuticals are trading higher 15.6% to $29.20 per share today. Over 9.5 million shares have traded hands. The company resolved a patent fight with Teva Pharmaceutical Industries (NASDAQ:TEVA) over its Cubicin antibiotic. Cubist Pharmaceuticals, Inc. is a drug company that discovers, develops, and commercializes novel drugs to treat infections. The Company’s lead product is a unique agent with bactericidal activity that addresses the critical need for new antibiotics with potent activity against life threatening infections.

9) Aruba Networks, Inc. (NASDAQ:ARUN): Shares are down 5.35% to $31.80 per share. Over 5 million shares have traded hands. The company’s competitor (NASDAQ:MERU) announced disappointing guidance, so consequently shares are lower. Aruba Networks Inc. provides enterprise mobility solutions that enables secure access to data, voice and video applications across wireless and wireline enterprise networks.

10) Analog Devices, Inc. (NYSE:ADI): Shares of Analog Devices are trading higher a half percent to $38.68 per share today. Over 3 million shares have traded hands. This is another example of a rising tide lifting all boats today in the chip sector due to the TXN-NSM deal. Analog Devices, Inc. designs, manufactures, and markets integrated circuits used in analog and digital signal processing. The Company’s products are used in communications, computer, industrial, instrumentation, military/aerospace, automotive, and high-performance consumer electronics applications. Analog Devices sells its products worldwide.