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 market intelligence researcher comScore (Nasdaq: SCOR) don't look terribly intelligent today, as they fell as much as 12.5% on slightly above-average volume.

So what: comScore announced first-quarter earnings last night, beating both earnings and revenue expectations along with sales guidance for next quarter above Street targets. That's all good news and generally a recipe for overnight price gains.

Now what: Before the report hit the wires, comScore's shares had climbed a market-crushing 22% since the last quarterly update. Even after this market pratfall, which doesn't seem to indicate any fundamental weakness in the business, comScore investors are still beating the market over the last three months, year-to-date, or full year. Rivals Nielsen (Nasdaq: NLSN) and Harris Interactive (Nasdaq: HPOL) can't hold a candle to comScore's returns. This dip should be temporary.

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