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 Power Integrations (NASDAQ:POWI) jumped 11% today after the company released fourth-quarter earnings.

So what: Revenue was up 19% to $79.2 million and net income was $9.7 million, or $0.33 per share from a loss a year ago. The company expects first-quarter revenue between $76 million and $82 million, with gross margin of 52% to 52.5%. Fourth-quarter results beat estimates, which is pushing the stock higher today.

Now what: Management still doesn't see much certainty in the economy, something echoed across the market this earnings season. But it did have enough confidence to bump the company's quarterly dividend up 60% to $0.08 per share. I'd like to see a higher profit before jumping in, but if shares pull back, the company is in a great space in the market, ready to capitalize on needed infrastructure in the future.

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