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: Drone maker AeroVironment (Nasdaq: AVAV) surged 12% higher today after the company posted earnings.

So what: Revenue was up 24%, to $63.8 million, and earnings per share of $0.01 beat expectations of a $0.06 loss. Unmanned aircraft remain AeroVironment's biggest product, but efficient energy systems rose 33% in the quarter and are becoming a significant contributor.

Now what: AeroVironment is making all the right moves as both major product lines had significant improvements. This Motley Fool Rule Breakers pick should see continued improvement as electric vehicles begin to hit the street in large numbers and its charging products sales pick up. I'm buying today's move and think there's plenty more room to run for AeroVironment.

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