Sony is a Japanese electronics manufacturer. Historically it focused on TV and audio equipment, photography, and gaming systems. Sony is also a major entertainment publisher, ranking among the top movie studios out there. Sony's Walkman is considered to be one of the earliest precursors to modern portable music players and continues to be an actively used brand. Sony exited the PC industry in 2014 by selling its Vaio brand. Sony's photography business lies with their Alpha brand cameras, though currently Canon and Nikon have a lead on Sony in this industry. Sony's unique cylindrical QX cameras are built for communicating with and clipping on to smartphones. Sony's TV sector used to be led by the Bravia brand, though their business here has been largely unprofitable.
Sony currently produces smartwatches and is developing a head-mounted gaming system. Sony's PlayStation 4 console is currently competing with Microsoft's Xbox One and Nintendo's Wii U systems. Sony also makes a portable system called the PSP. The latest iteration, the Vita, supports 3G cellular connectivity, and remote play from a PlayStation. Much of Sony’s history in smartphones was tied to equipment manufacturer Ericsson, but Sony bought Ericsson’s stake in the joint venture in February 2012. Currently Sony sells smartphones and tablets under the Xperia brand. Sony's global mobile marketshare is negligible; as of Q1 2014, they had less than LG's 4.4%, and were lumped in with the Other category in IDC's research. Sony was founded in 1946, and its current CEO is Kazuo Hirai. Sony's headquarters is in Japan, and trades under the stock symbol ADR.
Sony's subsidiaries include Sony Mobile Communications, Sony Computer Entertainment, Sony Online Entertainment, Sony EMCS Corporation, Sony Semidonductor Corporation, Sony Pictures Entertainment, Sony Pictures Home Entertainment, Sony Pictures Television, Sony Pictures Digital, Sony Music Entertainment, Sony/ATV Music Publishing, and Sony Financial Holdings.