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

What: Shares of Stratasys (NASDAQ:SSYS) climbed 6% today after JPMorgan upgraded the 3-D printing technologist from neutral to overweight.

So what: Along with the upgrade, analyst Paul Coster reiterated his price target of $101.50, representing about 9% worth of upside to yesterday's close. The stock has slumped recently on management's public offering of nearly 5.2 million shares, but Coster thinks that it provides investors with a juicy entry point given Stratasys' strong position in the rapidly growing 3-D printing space.

Now what: JPMorgan said that Gartner's recent forecast of 3-D printer growth (95% CAGR over the next five years) suggests strong upside to its own outlook (20%-25% CAGR), and that Stratasys is in a particularly good spot to benefit. "Stratasys has achieved a sustainable competitive position in the early adoption phase of a massive, diversified market for 3D printing solutions and is a pure-play for investors seeking exposure to the manufacturing renaissance theme," noted the firm. Of course, with the stock up about 70% from its 52-week lows and trading at a forward P/E of 40, I'd wait for some of the enthusiasm to fade again before jumping in.

Fool contributor Brian Pacampara has no position in any stocks mentioned. The Motley Fool recommends Stratasys. The Motley Fool owns shares of Stratasys. 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.