Mark Koba

Mark Koba
Senior Editor, CNBC

Mark Koba is a senior editor at CNBC.com. Topics for his feature story writing include the business of politics, health care, employment and the economy.

Before working at CNBC.com, he spent 11 years at Bloomberg LP, where among various duties, he was program producer for the award-winning "Bloomberg Small Business" television show.

Koba's background includes a decade of news writing and show producing at CNN, E! Entertainment Television, ABC's "World News Now," "Good Morning America" and CBS' "This Morning."

Follow Mark Koba on Twitter @MarkKobaCNBC.


  • Contestants: Please Read On Market Cap
    By: Mark Koba
    Friday, 16 Mar 2007 | 4:38 PM ET

    Dear Valued Player: In the rules for the Million Dollar Portfolio Challenge it is stated that any stocks with a market cap below $500,000,000 after the market close on 3/2/07 would not be eligible for trading in the contest. Because of an error in processing, ten companies were considered eligible for the contest despite being slightly below this market cap floor.

  • Tonight-Special CNBC Contest Program "How To Win"
    By: Mark Koba
    Friday, 16 Mar 2007 | 3:35 PM ET

    Don't forget tonight on CNBC -- a special television presentation. It's The CNBC.com Million Dollar Portfolio Challenge- How To Win! For a whole hour, we've got the experts, the stock pickers and the market shrinks--as well as a live studio audience. That's tonight-- March 16th at 7 pm EST--and it's only on CNBC-TV.

  • Recent Top Percentage Gainers And Losers
    By: Mark Koba
    Friday, 16 Mar 2007 | 3:29 PM ET

    Hey folks--here's a look at the top percentage gainers and losers from Thursday of this week.Webex is up 22.03% if you bought it on 3/14 at $46.20 and held/sold on 3/15 at $56.38. Webex agreed to be acquired by Cisco for $3.2 billion.