. >> susie: best buy board member mike mikan will serve as interim c.e.o. shares fell sharply in today's session. the stock dropped $1.33, or almost 6%, to close at $21.32 a share. there's a technical analysis of best buy shares on our web site. just go to nbr.com. you'll find it under the "blogs" tab. >> we have been talking a lot about the rough day in the markets, and you know, one way that you can always tell, i always check, how did the dow components do and 29 of the 30 were in the red. the only one in the green was hewlett-packard and it was up by only 13 cents. it was a rough day today. >> it was a rough day. hpq was the worst dow stock last year and perhaps value buyers moving into the market and lots of profit-taking going on in the broad market in the market focus. the major indices suffered their worst single day of the year, extending the slide over the past week. early on today, it looked like we may see stocks stabilize, but that lasted only the first hour of trading. then, sellers took over again with the index shrinking into the close. as a

that is why dunn is out and a new interim ceo, mike mikan, a former health care exec is in.n is staying the same. when i spoke with dunn not long ago, he said something that may turn out to be pro thet particular or not. take a listen. >> the story of retail many america is one of people finding a concept and scaling it as fast as they can and then slowly contracting, not staying relevant, and disappear. >> not staying relevant and disappearing. now, whether best buy can stay relevant will depend on whether they can capitalize on their considerable strengths and minimize its weaknesses. let's look at the plus size first. its scale. it is very big. the biggest consumer electronics retail by far. 20% market share. brand buy. it's balance sheet relatively strong. it's got the geek, the geek squad, and profitable service contracts and it's got very solid relationships with vendor, the manufacturers. they need best buy. now, among the negatives, too many stores and those stores take a lot of staff to run them. big retail real estate footprint. that makes it and margin pressure. d