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 energy storage company Maxwell Technologies (NASDAQ:MXWL) jumped 10% today after reporting earnings.

So what: Revenue dropped 4% from a year ago, to $46.0 million, but still came in well ahead of Wall Street's $39.0 million estimate. Net income was $1.1 million, or $0.04 per share, which was well in excess of the $0.08 loss that analysts expected. 

Now what: While results were ahead of expectations, there's not a lot of bullishness, even from management. They don't see much visibility in China's plug-in hybrid bus market, and expect revenue to be flat for the year. I'd take a cautious approach until revenue turns around and the bottom line improves, because there's too much downside risk at the current valuation.

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Travis Hoium has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. 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.