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Midday movers: Exxon Mobil, Amazon, Boeing & more

Exchange Place NYSE
Scott Mlyn | CNBC

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

Exxon Mobil - The oil producer and others, including Chevron, Hess, Newfield Exploration and Denbury Resources advanced with crude.

Amazon.com - The online retailer gained as CNBC refuted rumors Carl Icahn has stake in the company.

Boeing - The carrier gained after projecting strong demand for its fuel-efficient narrowbody jetliners.

Aetna - The health insurer and others including Cigna, Humana and Anthem rose after UnitedHealth Group posted better-than-expected fourth-quarter earnings.

Insperity - The human-resources outsourcing company soared after Starboard Value said it bought a 13.2 percent stake in the company.

ASML Holding - The semiconductor-production equipment gained after posting fourth-quarter results above estimates.

Illumina - The maker of DNA sequencing machines fell after President Barack Obama did not mention sequencing 1 million genomes as reported ahead of his State of the Union address Tuesday night.

TD Ameritrade Holding - The brokerage climbed after its quarterly earnings matched expectations.

Alynylam Pharmaceuticals - The drug developer dropped fell after pricing 4.7 million shares of common stock at $95 a piece.

BHP Billiton - The Australian miner rose after saying it would shutter 40 percent of its shale oil rigs in the United States.

Mosaic - The producer of phosphate fertilizer gained, a day after raising its fourth-quarter guidance.

(See CNBC's Market Insider Blog)

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