ComScore’s October 2009 Search Data: Google and Microsoft Up, Yahoo Down

ComScore’s October search market analysis is in and it’s good news for two of the Big Three search engines. Google and Microsoft both posted gains for the month, while Yahoo suffered a decline.

Google (GOOG) claimed 65.4 percent of the domestic search market in October, up from 64.9 percent in September, according to comScore. Meanwhile, Microsoft’s (MSFT) share rose to 9.9 percent from 9.4 percent in September. A modest bit of growth for the month, but quite impressive year over year. Search volume was up 30.8 percent from October 2008.

And Yahoo (YHOO)? Well, the company’s search market share slipped to 18 percent in October from 18.8 percent in September. Below, a table showing comScore’s (SCOR) search volume and market share data, via JP Morgan analyst Imran Khan (click to enlarge):