Shares of Amazon.com, Inc. (AMZN, Financial), our largest holding, rose 16.7% after the company reported better-than-anticipated operating results. As we suspected, Amazon Web Services was actually profitable (and meaningfully so) and the news was well received by investors who we believe were generally underweight the stock. With e-commerce representing around 10% of global retail sales, we believe the structural shift to online retailing represents a multi-year growth opportunity for Amazon.
From Baron Funds' second quarter 2015 commentary.