Midday movers: Chevron, Clorox, Harley-Davidson & more

A live market monitor is viewed on the floor of the New York Stock Exchange (NYSE).
Spencer Platt | Getty Images
A live market monitor is viewed on the floor of the New York Stock Exchange (NYSE).

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

Biota Pharmaceuticals - Shares plummeted after its influenza treatment failed to meet its main goal in a mid-stage study.

Boyd Gaming - The casino operator declined after posting weaker-than-expected second-quarter results.

Chevron - The oil company dropped as oil futures fell to a six-month low on the New York Mercantile Exchange.

Church & Dwight Co. - The maker of Arm & Hammer posted better-than-expected second-quarter earnings.

Clorox - The bleach supplier rose after tallying adjusted fourth-quarter profit that beat forecasts.

Fluor - The engineering company gained on better-than-expected second-quarter earnings.

General Motors - The auto manufacturer fell as did Ford Motor after sales growth slowed for both in July.

Harley-Davidson - The motorcycle maker edged higher as it recalled more than 3,000 bikes to fix ignition switches.

Hewlett-Packard - The computer maker declined after the Justice Department said the company would pay $32.5 million to settle allegations it overcharged the U.S. Postal Service.

Mobileye - The Israeli maker of software for self-driving cars gained in its market debut.

Spirit AeroSytems Holdings - The maker of plane components jumped after raising its full-year forecast.

Starwood Hotels & Resorts Worldwide - The company gained after increased its stock buyback to $1.5 billion.

3D Systems - The provider of 3D printing fell after FBR Capital Markets downgraded its shares to market perform from outperform.

Valeant Pharmaceuticals International - The Canadian drug manufacturer fell after Allergan sued it and Pershing Square Capital Management for alleged violations of federal securities laws.

(See CNBC's Market Insider Blog)

—By CNBC's Rich Fisherman.

Questions? Comments? Email us at marketinsider@cnbc.com

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