• Investors who buy Amazon.com stock, which trades at a sky-high multiple, are taking a big risk, one analyst told CNBC on Monday.

  • Can Apple Still Prevail in the Smartphone Wars? Sunday, 17 Mar 2013 | 12:54 AM ET

    Samsung launched its latest salvo against Apple in the war for global smartphone dominance. What does it mean for Apple?

  • Can Samsung's Smartphone Outsmart Apple's iPhone?  Friday, 15 Mar 2013 | 4:15 PM ET

    Despite all the buzz around the launch of Samsung's new smartphone, it still hasn't eclipsed rival Apple in investors' eyes. Colleen Taylor, Tech Crunch, and Ben Parr, CNET, discuss.

  • Two Tech Gurus 'Test Drive' Galaxy S4  Friday, 15 Mar 2013 | 11:22 AM ET

    Steven Levy, Wired senior writer; and Lance Ulanoff, Mashable editor-in-chief, showcase features on Samsung's newest mobile device and discuss growing competition in smartphone business.

  • Apple Estimates Cut as Samsung Unveils Galaxy S4 Friday, 15 Mar 2013 | 11:14 AM ET
    People interact with the Samsung Galaxy S IV, March 14, 2013 in New York City.

    Apple estimates are cut again as Samsung announces its Galaxy S4 smartphone. TheStreet.com reports.

  • Samsung GS4 Unpacked and Unveiled  Friday, 15 Mar 2013 | 10:07 AM ET

    Alex Gauna, JMP Securities analyst takes a closer look at what Samsung's newest smartphone means for the competition.

  • Early Movers: CCL, LYV, Banks & More Friday, 15 Mar 2013 | 7:48 AM ET

    Some of the names on the move ahead of the open.

  • Samsung S4 Functionality Better Than iPhone?  Friday, 15 Mar 2013 | 3:40 AM ET

    Dan Wagner, chairman and CEO of mPowa, tells CNBC that the features phone market is now the battle-ground for phone-makers with functionality the main selling-point. He adds that Samsung has been extraordinary in its success and that its S4 device is the best alternative to an Apple phone.

  • Investors Give Samsung Galaxy S4 a Thumbs Down Friday, 15 Mar 2013 | 2:30 AM ET
    People interact with the Samsung Galaxy S IV, March 14, 2013 in New York City.

    Investors dumped shares in Samsung Electronics just hours after the South Korean tech giant unveiled its flagship new phone, the Galaxy S4. Here's why.

  • Mark Newman, Senior Analyst at Sanford C Bernsten thinks the latest Samsung Galaxy phone is a combination of incremental improvements rather than a game changer.

  • Samsung Takes on Apple With New Galaxy S4 Thursday, 14 Mar 2013 | 7:53 PM ET
    A Samsung employee displays the Samsung Galaxy S IV for a photo March 14, 2013 in New York City.

    Samsung has unveiled the Galaxy S4, a phone that allows users to scroll with their eyes and navigate the screen without touching it.

  • Timing of Morgan Stanley's Purchase Uncertain  Thursday, 14 Mar 2013 | 5:30 PM ET

    Morgan Stanley will proceed with a $4.7 billion purchase of 35 percent of Citi brokerage, with CNBC's Mary Thompson. Meanwhile JPMorgan Chase plans to raise its Q2 dividend to $0.38 from $0.30 per share, with CNBC's Kayla Tausche. And CNBC's Jon Fortt has details on the Galaxy S4 launch. Brian Marshall, of ISI's technology team, weighs in on the reveal tonight.

  • Samsung Unveiling Galaxy S4 Today  Thursday, 14 Mar 2013 | 3:26 PM ET

    CNBC's Seema Mody reports on Samsung's big launch today.

  • BlackBerry Plans Security Feature for Android, iOS Thursday, 14 Mar 2013 | 1:16 PM ET
    Thorsten Heins and the Z10

    BlackBerry will offer technology to secure the mobile devices of competitors Google and Apple.

  • Charles Golvin, Forrester Research analyst, discusses whether Samsung will finally grab a bigger share of the smartphone market away from Apple with the launch of its Galaxy S4.

  • Why I Upgraded Apple Today: Analyst Thursday, 14 Mar 2013 | 11:27 AM ET

    Wall Street has become increasingly bearish on Apple this year but one firm is bucking the pessimistic trend and upgraded the name to "buy" with a $540 price target.

  • Samsung to Unveil Galaxy S4 Today  Thursday, 14 Mar 2013 | 11:11 AM ET

    Brian Cooley, CNET.com editor-at-large, provides a preview of what new features Samsung is likely to unveil tonight, as the smartphone race heats up.

  • Samsung Is Seizing Market Share from Apple: Pro  Thursday, 14 Mar 2013 | 5:45 AM ET

    David Garrity, principal at GVA Research, tells CNBC that Samsung is coming out with newer products, more frequently than Apple, which is leading to a significant advantage. David Garrity and firm own Apple stock.

  • The Rise of the Apps  Wednesday, 13 Mar 2013 | 8:48 PM ET
    BlackBerry Z10 and iPhone 5 smartphones

    Revenue of global smartphone applications in 2012 totaled $15 billion, the size of Jamaica's GDP.

  • Google Names a New Android Chief Wednesday, 13 Mar 2013 | 2:14 PM ET
    Sundar Pichai

    Google has named Sundar Pichai to replace Android co-founder Andy Rubin as chief of the world's most used mobile software.