Art Cashin of UBS is not ready to make any big decisions on the stock market right now. (2:15)

CNBC's David Faber reports according to the activist investor, the buy was based on Microsoft's fundamental value.

Doug Oberhelman, Chairman & CEO of Caterpillar, explains why he is still confident despite earnings miss; and weighs in on what's pressuring growth opportunities in mining.

Chad Sweet, former Chief of Staff at the Dept. of Homeland Security, shares his thoughts on the latest investigation in the Boston bombings.

CNBC's Scott Cohn reports the latest detail on the investigation into the Boston bombing attacks. And, Col. Jack Jacobs, MSNBC military analyst, discusses ways to improve protecting the homeland.

Mike Boyd, Boyd Group International chairman, shares his thoughts on forced sequester cuts, and the likely impact at major U.S. airports and on travelers.

Gary Kaminsky, and Greg Fleming, Morgan Stanley Wealth Management, explain why they believe the underlying trend line in the U.S. economy is "slowly and steadily getting better."

CNBC's Kelly Evans tells you what the markets will be watching as we approach the start of trading in the U.S.

Frans Van Houten, CEO of Royal Philips Electronics, tells CNBC that the start of the year was as soft as they expected with particular weakness in Europe and the US.

Karen Tso takes you through the European market open where stocks have come in higher.

The years of double digit growth in China are over and concerns are rising that car makers might be at overcapacity in the country.

CNBC's Kaori Enjoji speaks to David Schoch, President of Ford's Asia-Pacific operations about the U.S auto giant's growth outlook at the Shanghai Auto Show.

CNBC speaks exclusively with Wang Shi, Chairman of the mainland's biggest property developer, Vanke, at the China Entrepreneur Club's Annual Summit of Green Companies in Kunming.

NBC's Pete Williams reports on the latest updates from federal investigations into Dzhokhar Tsarnaev, the second suspect in the Boston Marathon bombings.

If the critics of robotic surgery are right -- that safety is an issue -- how is it that robotic-assisted surgery was performed on 450,000 people last year?

The AR-15 is the most popular and, some would say, misunderstood, rifle in America: an estimated four million are in circulation. You can even buy one at Wal-mart, if they're not sold out. It has been used in a number of high profile mass murders, yet it is also the preferred rifle of law-abiding homeowners, hunters, and sport shooters across America.

As tax day nears, Suze gives you ways to maximize your retirement accounts. A mother of 3 feels her family is living in survival mode & wants to know where all their money is going. Viewers ask if they can afford a new driveway, a last hurrah European vacation.

With controversy swirling around Intuitive Surgical's da Vinci robot, some critics are wondering whether the number of complications from robotic surgery are underreported.

Is taxing the internet the answer to reinvigorating the economy? Art Laffer, Former Reagan Economic Advisor, shares his opinions.

NBC's Lester Holt reports that people on the streets of Watertown are cheering police after they captured the Boston Marathon bombing suspect.