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 Rambus (Nasdaq: RMBS) are ringing in the new year with some upside, up by as much as 11% today after the company updated its fourth-quarter guidance.

So what: For the quarter that ended Dec. 31, it sees revenue guidance of approximately $83 million, topping previously provided guidance of between $66 million and $71 million.

Now what: The press release is devoid of any details beyond that, and didn't attribute the strength to any particular reasons. The Street consensus called for $69 million, so Rambus has left that estimate in the dust.

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Fool contributor Evan Niu holds no position in any company mentioned. Click here to see his holdings and a short bio. 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.