While Fools should generally take the opinion of Wall Street with a grain of salt, it's not a bad idea to take a look at particularly stock-shaking analyst upgrades and downgrades -- just in case their reasoning behind the call makes sense.

What: Shares of Amazon.com, (NASDAQ:AMZN) gained 2% this morning after Goldman Sachs upgraded the online retail gorilla from buy to conviction buy.

So what: Along with the upgrade, analyst Heath Terry planted a price target of $400 on the stock, representing about 20% worth of upside to yesterday's close. So while momentum traders might be turned off by Amazon's year-to-date price weakness, Terry's call could reflect a sense on Wall Street that the worries about its growth trajectory are becoming overblown.

Now what: According to Goldman, Amazon's risk/reward trade-off is one of the best in the sector. "While concerns over Amazon Web Services (AWS) pricing, slowing Media growth, and ongoing margin pressures are likely to persist, we believe -- given its track record of delivering consistently high returns on invested capital -- the ongoing investment in fulfillment and infrastructure will widen Amazon's competitive lead through initiatives such as Fresh, AWS, digital media, and faster fulfillment and product availability, driving incremental growth and, ultimately, profitability," said Terry. When you couple that upbeat outlook with Amazon's rock-solid balance sheet and still-sluggish stock price, it's tough to disagree with Goldman's bullishness. 

Leaked: Apple's next smart device (warning: it may shock you)
Apple recently recruited a secret-development Dream Team to guarantee its newest smart device was kept hidden from the public for as long as possible. But the secret is out... and some early viewers are even claiming its everyday impact could trump the iPod, iPhone, AND the iPad. In fact, ABI Research predicts 485 million of these type of devices will be sold per year. But one small company makes this gadget possible. And its stock price has nearly unlimited room to run for early in-the-know investors. To be one of them, and see Apple's newest smart gizmo, just click here!

Brian Pacampara has no position in any stocks mentioned. The Motley Fool recommends Amazon.com and Apple. The Motley Fool owns shares of Amazon.com and Apple. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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