Market Insider

Midday movers: Allergan, Comcast, Facebook & More

A Comcast truck is seen parked at one of their centers on February 13, 2014 in Pompano Beach, Florida.
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Take a look at some of Tuesday's midday movers:

Allergan - Shares jumped a day after activist investor William Ackman joined Canadian drugmaker Valeant Pharmaceuticals in an effort to acquire the company.

Comcast - Shares of the parent of NBCUniversal and CNBC gained after it reported first-quarter profit that beat expectations.

Facebook - The social media company gained after Credit Suisse upgraded it to "outperform."

General Motors - The auto manufacturer filed a motion in a U.S. bankruptcy court to enforce a ban on suits tied to ignition defects in cars sold before its 2009 bankruptcy. Its shares gained.

Harley-Davidson - The motorcycle maker climbed after tallying a better-than-expected quarterly profit.

Intuitive Surgical - Shares of the medical device company moved higher after it was given regulatory clearance for a version of its da Vinci surgical system.

McDonald's - The fast food chain fell after reporting earnings that declined along with a fall in U.S. same-store sales.

Netflix - Shares of the online film service rose after results showed robust subscriber growth.

Pentair - The provider of water systems slipped after posting first-quarter revenue beneath estimates.

Travelers Cos - The Dow component and insurer gained after reporting first-quarter earnings that topped estimates.

United Technologies - Shares rose after the Dow component hiked the low end of its full-year profit forecast.

Zions Bancorp - The regional bank declined after Evercore Partners downgraded its shares to equalweight from overweight.

—By CNBC's Kate Gibson.

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