In a note to clients — as reported by “AppleInsider” ( — Piper Jaffray analyst Gene Munster says Apple should sell as many as 5.3 million Macs over the holidays.

Extrapolating from data from the NPD Group, Munster thinks Mac sales are up 19% year-over-year in October. As sales continue to pick up leading up to Christmas, he sees Apple selling between 5.1 million and 5.3 million Macs during the December quarter.

Those numbers would represent year over year growth of between 23 percent and 28%, notes “AppleInsider.” Munster estimates that Mac revenue will represent about 18% of Apple’s overall revenue during the company’s December quarter.