Priceline, TripAdvisor close at new 52-week lows app on a mobile device.
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Shares of Priceline closed below $1,000 on Thursday—the first time the stock had settled under that level since October 2013.

Priceline and fellow travel-related company TripAdvisor both closed at new 52-week lows on Thursday. The stocks were down 28 percent and 40 percent from their respective highs last year.

TripAdvisor closed at $66.39—its lowest level since July 2013. The stock reached its high in June when it touched $111.24. The company's average Wall Street price target is $88.35, according to FactSet.

Read MorePriceline expects to grow slower than earlier estimates

Priceline similarly has analysts' confidence: It maintains an average analyst price target of $1,365.92, according to FactSet. It closed the day at $998.25.

—Analysis by Giovanny Moreano | @giovannymoreano