Market Insider

Midday movers: AT&T, Caterpillar, Facebook & More

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Take a look at some of Thursday's midday movers:

AT&T - The wireless carrier fell after reporting weaker-than-expected quarterly revenue.

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Caterpillar - The Dow component and maker of earth-moving equipment dropped after adjusting its full-year sales outlook lower.

Read MoreCaterpillar profit beats as revenue falls short

D.R. Horton - The home builder declined after reporting a drop in fiscal third-quarter earnings and a national report showed new-home sales fell.

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Facebook - The social network jumped after trouncing analysts' expectations for quarterly profit and revenue.

Read MoreFacebook shares ride to highs on earnings boost

Precision Castparts - The supplier of metal components fell after reporting quarterly earnings below expectations.

Qualcomm - The chip manufacturer declined after projecting quarterly profit that could miss estimates.

SodaStream International - Shares were halted after Bloomberg cited people familiar with the matter in reporting the Israeli maker of home-soda machines company was in talks with an investment firm about going private.

Tractor Supply Company - The operator of farm and ranch stores gained after Wedbush reiterated its outperform rating.

TripAdvisor - The provider of travel reviews fell after posting second-quarter earnings short of estimates.

Under Armour - The maker of sports apparel rose after hiking its full-year sales outlook.

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Zillow - The real estate site gained after Bloomberg cited people with knowledge of the matter in reporting the company was trying to purchase competitor Trulia.

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—By CNBC's Kate Gibson.

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