Although we don't believe in timing the market or panicking over market movements, we do like to keep an eye on big changes -- just in case they're material to our investing thesis.

What: Shares of gas equipment manufacturer Chart Industries (Nasdaq: GTLS) shot up 17% in intraday trading on heavier-than-normal volume.

So what: It appears that Chart shareholders have Morgan Stanley (NYSE: MS) to thank today. The broker upgraded Chart from "equal-weight" to "overweight," bumped up its 2011 and 2012 earnings estimates for the company, and said that the company stands to be a big beneficiary as liquefied natural gas (LNG) takes a bigger role on the energy playing field.

Now what: Combine today's upgrade with a strong earnings report last month that showed earnings above analysts' expectations and higher guidance from management and you've got a recipe for excitement. However, shares are now up a scorching 32% in less than a month, so investors may want to wait and see if shares cool off a bit before trying to grab at them.

Want to keep up to date on Chart Industries? Add it to your watchlist here.

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.

Fool contributor Matt Koppenheffer does not own shares of any of thecompanies mentioned. You can check out what Matt is keeping an eye on by visiting his CAPS portfolio, or you can follow Matt on Twitter @KoppTheFool or on his RSS feed. The Fool's disclosure policy assures you no Wookiees were harmed in the making of this article.