By the numbers: Apple PC share grows, Microhoo search share down slightly

New numbers are out from market-research firm IDC and search-analysis firm comScore on October 13. The findings: Apple is now No. 3 in U.S. PC shipments, and Bing/Yahoo's combined U.S. search share is down slightly compared to last month.

New numbers are out from market-research firm IDC and search-analysis firm comScore on October 13.

IDC's data on worldwide personal computer shipments shows Apple coming on increasingly strong in the third quarter of 2010. While overall shipments were up 11 percent (3 percentage points lower than expectations, as TechFlash's Todd Bishop notes), Apple bucked the trend. Apple's U.S. share grew with 24 percent in the quarter, making Apple the No. 3 PC vendor here. That puts Apple just behind only HP and Dell in the U.S.

(As Bishop tweeted later, the new IDC numbers don't include iPad sales, but IDC analysts said iPad demand helped drive up Apple's PC shipments, seemingly via the halo effect.)

Update: As my colleague Larry Dignan notes, in worldwide shipments, according to IDC, Apple is not even in the top six, in terms of vendor market share , which means it has under 5 percent share.

Meanwhile, on the search side of the house, comScore's September numbers show that Google Sites led the U.S. query share, with 66.1 percent of the market. Yahoo lost a bit of share, compared to August, down to 16.7 percent, and Microsoft's Bing held steady with 11.2 percent (compared to 11.1 percent in August).

Because Microsoft is powering Yahoo's Web searches in the U.S., their combined share is, for all intents and purposes, the new Bing share. If you look at the data that way, Microhoo had 27.9 percent of the U.S. query share in September, compared to 28.5 percent in August. Google was up from 65.4 percent in August, to 66.1 percent in September, according to comScore's new data.