Hungry investors eyeing the next Amazon-style technology heavyweight tuned into Yahoo's earnings release on Tuesday evening. Keeping a close eye on the results of Chinese e-commerce site Alibaba - with a flotation expected this year - market watchers were left disappointed with growth in sales slipping in its July to September period.

Search giant Yahoo, which owns 24 percent of Alibaba, said that the Chinese online marketplace posted 51 percent revenue growth during the quarter to $1.78 billion compared with $1.18 billion a year prior. Meanwhile, Amazon reported a revenue increase of 24 percent to $17.09 billion from $13.81 billion a year ago for the same quarter.