Oct 7, 2010 10:40 GMT  ·  By

In a note to customers issued yesterday, JMP Research analyst Alex Gauna wrote that stock of new generation Apple TVs is already depleted at many of Apple’s US retail outlets, leading to assumptions that the device is selling at a pace at least one quarter to one third that of the iPad. In other words, Apple TV is now selling roughly 1 million units a quarter, Barron’s reports.

Acknowledging that the device is selling out in many of Apple’s U.S. retail stores, Gauna reports that checks find that “the new Apple TV product has continued to sell out in Apple stores across the nation after its launch last week.”

“We were not particularly surprised when we couldn’t get our hands on the Apple TV over this past introductory weekend in San Francisco,” he writes, “but when the scarcity persisted into this week it got us to checking and we subsequently learned that stores across the nation were selling out of their inventory on the same day as receipt in Boston, Chicago, New York and Washington D.C. and online representatives corroborated this strength extends beyond our 20+ store checks.”

The analyst concluded that the second-generation Apple TV must be selling around 1 million units per quarter. He believes that the $99 price point “is resonating with consumers.” Gauna has a $335 target on Apple stock which.

On September 1, 2010, Apple announced the new Apple TV touting the product as the best tool to way to watch your favorite HD movies and TV shows on your HD TV.

Apple TV users can choose from an online selection of HD movies to rent, including first run movies for just $4.99, as well as a selection of HD TV show episodes to rent from ABC, ABC Family, Fox, Disney Channel and BBC America for just 99 cents.

The device also streams content from Netflix, YouTube, Flickr and MobileMe, as well as music, photos and videos from PCs and Macs to your HDTV.