Johnson Controls - The auto-parts maker declined after reporting quarterly earnings.
Kansas City Southern - The rail operator gained after it reported better-than-expected quarterly revenue.
Laboratory Corp. of America Holdings - The provider of medical tests declined after its second-quarter earnings fell.
Petrobras Argentina - The energy company rose after the results of a Brazilian presidential poll showed greater odds of a new administration after the October election.
RealPage - The provider of software to the rental-housing industry tanked after it cut earnings and revenue guidance for the second quarter.
Skyworks Solutions - The provider of analog semiconductors rose after posting better-than-expected third-quarter results. Rivals including RF Micro Devices and TriQuint Semiconductor also gained.
TerraForm Power - The solar-plant owner surged in its market debut.
Trupanion - The provider of pet insurance gained on its first day of trading.
Williams Companies - The supplier of energy infrastructure was among the second-quarter winners listed in Dan Loeb's Third Point investment letter. Other winners listed included Dow Chemical and Anadarko Petroleum; laggards included Ally Financial, Sony and Rackspace Hosting.
(Read More: See CNBC's Market Insider Blog)
—By CNBC's Rich Fisherman.
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