A number of retailers are running out of stock of the iPod nano, notes 9to5Mac. In the US these include major chains like Amazon, Target, Walmart and Best Buy. Amazon and Target are believed to be out of about half of their Nanos, while Walmart has just a few in stock. Outside of the US, Amazon UK is also seeing stock-outs; some retailers do have plenty of units though, including Apple itself and B&H Photo.
