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 Chinese online travel company International (Nasdaq: CTRP) sank 11% on Tuesday after its full-year revenue outlook came in below Wall Street expectations.

So what: While Ctrip's quarterly results -- $0.35 per-share profit on revenue of $129 million -- were actually in line with estimates, the forward-looking Mr. Market is choosing to focus on management's full-year guidance instead. The company now sees revenue growth of 15%-20% from the year-ago level -- solid, to be sure -- but given Ctrip's relatively lofty valuation, it wasn't quite enough to satisfy Wall Street's voracious growth appetite.

Now what: I'd look into this plunge as a possible entry point. Although it isn't growing as fast as Wall Street would like, Ctrip's fundamentals -- operating margins continue to crush those of rivals like Expedia (Nasdaq: EXPE) and eLong (Nasdaq: LONG) -- still make it a long-term pick worth looking into. With the shares flirting with 52-week lows today, now might even be a good time to do it.

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