Sony
Sony began in the rubble of postwar Tokyo with a capital of 190,000 yen and eight employees. Masaru Ibuka opened an electronics shop inside a department store called Shirokiya in the Nihonbashi district in 1946, and within weeks his former colleague Akio Morita had joined him to formalize a company. Their first major achievement was Japan's first tape recorder, a machine they called the Type-G. From that small shop they would eventually build a company that, by 2020, held 55 percent of the global image sensor market, ranked among the world's largest music publishers, and had sold the most successful video game console in history. How did a startup reliant on a single bank for all its financing become one of the defining commercial forces of the twentieth century? And what does it tell us that a company celebrated for the Walkman and the PlayStation also battled accusations of rootkits, customer surveillance, and price fixing?
Masaru Ibuka and Akio Morita faced an immediate problem as they looked toward the global market: their company's full name, Tokyo Tsushin Kogyo, was nearly impossible for Western customers to pronounce or remember. The founders first considered abbreviating it to TTK, but Tokyo Kyuko, a railway company, already owned that acronym. They briefly tried the name Tokyo Teletech before Morita discovered an American firm was already using Teletech as a brand. The syllabic shorthand Totsuko worked inside Japan but baffled American listeners. What they settled on was a blend: the Latin word sonus, meaning sound, combined with sonny, a piece of 1950s American slang for a young man. In Japan, sonny boy had been absorbed as a loan word carrying the sense of a smart and presentable young man, which was precisely how both Ibuka and Morita thought of themselves. The first product to carry the Sony name was the TR-55 transistor radio in 1955, though the company did not formally rename itself until January 1958. Even that decision met resistance. The principal bank, Mitsui, pushed for something more descriptive, like Sony Electronic Industries, but Morita held firm: he did not want the company tied to any single industry. Eventually Mitsui's own chairman gave his approval, and a word invented to sell radios became one of the most recognized names on earth.
According to one account cited in the source, Sony's TR-63 radio cracked open the American market and helped launch the consumer microelectronics industry. By the mid-1950s, American teenagers were buying portable transistor radios in large numbers; the industry grew from an estimated 100,000 units in 1955 to 5 million units by the end of 1968. Morita moved to the United States and founded Sony Corporation of America in 1960. While there, he was struck by how freely American workers moved between employers, a practice almost unknown in Japan at the time. He returned home and began recruiting experienced, middle-aged professionals away from other companies, a practice that other Japanese firms eventually followed. Sony also became a significant supplier to the United States military, providing bomb components used in the Vietnam War. That relationship, combined with the quality reputation Sony built through premium pricing, helped alter American attitudes toward goods labeled made in Japan. By the early 1980s the picture had darkened. A global recession cut electronics sales, Sony was forced to lower prices, and profits fell sharply. One analyst was quoted as saying, "It's over for Sony. The company's best days are behind it." That prediction proved premature: it was in this period that Sony's next generation of leaders began developing the products that would define the company for decades.
Sony introduced U-matic, the world's first videocassette format, in 1971, but the price put it out of reach for ordinary consumers. When the company launched Betamax in 1975, it entered a direct conflict with JVC's VHS format that became one of the defining commercial battles of the era. VHS gained critical mass and became the global standard; Betamax was relegated to a professional offshoot called Betacam, which itself was discontinued in 2016. The pattern of launching a proprietary standard and watching it lose to a rival played out again in audio. Sony introduced the MiniDisc in 1992 as a replacement for the compact cassette, and promoted its own ATRAC audio compression technology against the more widely adopted MP3. Sony's Network Walkman players did not support MP3 natively until late 2004. The compact disc was a different story. Sony demonstrated an optical digital audio disc in 1977 and then partnered with Philips to set a worldwide standard; the two companies jointly announced the CD in 1983. A joint venture to develop a high-density format in the early 1990s gave way to DVD, introduced in 1997. Sony's Blu-ray format later prevailed over Toshiba's HD DVD after a roughly two-year format war, with the first Blu-ray players reaching consumers in 2006. In the hard-disk era, Sony held more than 70 percent of the 3.5-inch floppy disk market before pulling out of the business in 2010. The technologies Sony developed for optical discs found a second life in an unexpected place: laser communication devices for small satellites.
Nintendo originally asked Sony to build a CD-ROM add-on for the Super Famicom, and the two companies had been working together as early as 1988. At the Consumer Electronics Show in June 1991, Sony unveiled both the add-on and a standalone console it called the Play Station. The day after that announcement, Nintendo revealed it was ending the partnership, opting to work with Philips instead. The reason was a failure to agree on how to split revenue. The break infuriated Sony president Norio Ohga, who responded by assigning Ken Kutaragi to develop a PlayStation that would compete directly with Nintendo. Internal opposition within Sony was substantial. To keep the project alive while avoiding conflict with the company's existing relationship with Philips over CD format development, Kutaragi's team was relocated from Sony headquarters to Sony Music, a separate financial entity. A pivotal board meeting in June 1992 brought together Ohga, Kutaragi, and senior executives. Kutaragi presented a CD-ROM-based system designed around 3D graphics. Ohga approved the project after Kutaragi reminded him of the humiliation Nintendo had caused. The first PlayStation launched in 1994 and captured 61 percent of global console sales, ending Nintendo's long dominance of the market. The PlayStation 2, released in 2000, became the most successful game console of all time, selling over 150 million units. The PlayStation 4, launched on the 15th of November 2013, had sold 73.6 million units by the 31st of December 2017.
Norio Ohga drove Sony's expansion into entertainment, purchasing CBS Records in 1988 for US$2 billion and Columbia Pictures Entertainment in 1989 for $3.4 billion. The CBS Records acquisition brought Sony into a partnership with Michael Jackson's ATV music catalogue, which the Guinness Book of World Records described as belonging to the most successful entertainer of all time. Sony used that foundation to establish Sony Music Entertainment in 1991. A 2004 joint venture with Bertelsmann AG created Sony BMG, which became embroiled in a copy protection scandal in 2005 when its music CDs installed software on users' computers that posed a security risk; class action lawsuits followed. Sony eventually bought out Bertelsmann's stake in 2008. In 1995, Sony merged its music publishing arm with Michael Jackson's ATV Music Publishing. The resulting Sony/ATV Music Publishing company owns the rights to over 4 million compositions, including the Beatles' Lennon-McCartney catalogue, alongside works by Bob Dylan, Eminem, Lady Gaga, Sam Smith, Ed Sheeran, and Taylor Swift. In 2012, Sony/ATV acquired a majority stake in EMI Music Publishing, becoming the largest music publishing company in the world. On the film side, Sony Pictures Entertainment held a 12.5 percent box office market share in 2011 and produced franchises including Spider-Man, The Karate Kid, and Men in Black, as well as television programs Jeopardy! and Wheel of Fortune. In late 2014, Sony Pictures was hit by a hack from a group calling itself Guardians of Peace, weeks before the studio was set to release the film The Interview.
Sony traces its semiconductor roots to 1954, when it became the first Japanese company to commercialize the transistor, a technology invented at Bell Labs. Ibuka, who was himself an expert in vacuum tubes, saw the transistor's potential and had Morita negotiate the licensing terms. Sony became one of the earliest licensees, alongside Texas Instruments. In 1957, Sony employee Leo Esaki and colleagues invented the tunnel diode, sometimes called the Esaki diode, through which they discovered the quantum tunneling effect in solids. Esaki received the Nobel Prize in Physics in 1973 for that work. Decades later, Sony's semiconductor focus shifted toward imaging. As of 2020, Sony held the position of the world's largest manufacturer of CMOS image sensors, with its chips used in digital cameras, smartphones, tablets, drones, and autonomous vehicle systems. That year the company held a 55 percent share of the global image sensor market. Sony's chip business arm, Sony Semiconductor Solutions, produces image sensors under the Exmor and HAD CCD brands, image processors under the BIONZ name, laser diodes, system LSIs, and emerging display technologies including microLED and microOLED. In 2021, the World Intellectual Property Organization ranked Sony ninth in the world for the number of patent applications filed under the Patent Cooperation Treaty, with 1,793 applications published during 2020, up from 13th place in 2019.
In August 2000, Sony Pictures Entertainment senior vice president Steve Heckler was quoted saying the industry would take whatever steps were necessary to protect its revenue streams. Sony followed that philosophy into a DRM system that functioned like a rootkit on users' computers; when the surveillance became public, an uninstaller Sony released created additional vulnerabilities and gathered more data, resulting in class action lawsuits, recalls, and settlements. In 2005, Sony BMG's music CDs were found to have installed malware on customers' computers as a copy protection measure. In 2007, an investigation launched in 2002 by the European Commission resulted in Sony, Fuji, and Maxell receiving a combined fine of 110 million US dollars for fixing professional videotape prices between 1999 and 2002; the three companies had controlled a combined 85 percent of that market. Sony's portion of the fine was increased by a third because the company had tried to obstruct the investigation by refusing to answer EU inquiries and shredding documents during raids. In December 2025, Texas Attorney General Ken Paxton filed a lawsuit against Sony and four other smart TV manufacturers, alleging that they used automated content recognition technology to secretly record what consumers watched in their homes. The company's turbulent financial decade in the 2000s culminated in a loss of 520 billion yen for fiscal 2012, the worst in the company's history, with accumulated losses over the preceding four years reaching 919.32 billion yen. As of January 2024, Sony's market capitalization stood at over 112 billion US dollars, with net cash reserves of 1.8 trillion yen, making it the most cash-rich Japanese company at that point.
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Common questions
When was Sony founded and by whom?
Sony was founded on the 7th of May 1946 by Masaru Ibuka and Akio Morita as Tokyo Tsushin Kogyo, an electronics shop in the Nihonbashi area of Tokyo. The company changed its name to Sony in January 1958.
What does the name Sony mean and where does it come from?
Sony is a blend of the Latin word sonus, the root of sonic and sound, and sonny, a 1950s American slang term for a young man. In Japan, sonny boy was a loan word connoting a smart and presentable young man, which founders Ibuka and Morita felt described themselves.
How did Sony enter the video game industry with the PlayStation?
Sony originally partnered with Nintendo to develop a CD-ROM add-on for the Super Famicom, but Nintendo ended the deal in 1991 over a revenue-sharing dispute. Sony president Norio Ohga responded by directing Ken Kutaragi to develop an independent console; the first PlayStation launched in 1994 and captured 61 percent of global console sales.
What is Sony's share of the global image sensor market?
As of 2020, Sony held a 55 percent share of the global image sensor market, making it the world's largest manufacturer of CMOS image sensors. Its chips are used in smartphones, digital cameras, drones, and autonomous vehicle systems.
What entertainment companies has Sony acquired?
Sony acquired CBS Records in 1988 for US$2 billion and Columbia Pictures Entertainment in 1989 for $3.4 billion. In 2012, Sony/ATV Music Publishing acquired a majority stake in EMI Music Publishing, making it the largest music publishing company in the world.
What controversies has Sony faced over consumer privacy?
Sony deployed a DRM rootkit on music CDs that surveilled users; the resulting class action lawsuits led to recalls and settlements. In December 2025, Texas Attorney General Ken Paxton filed a lawsuit alleging Sony and other smart TV manufacturers used automated content recognition technology to secretly record viewing habits without consumer consent.
All sources
232 references cited across the entry
- 1webChange of the Sony entity for License Agreements, etc.Sony Group Corporation — 1 April 2021
- 3webCorporate Info
- 4webFinancial Statements and Consolidated Financial ResultsSony Group Corporation
- 5inline"Access & Map
- 6newsMasaru Ibuka, 89, Engineer And Sony Co-Founder, DiesJames Sterngold — 1997-12-20
- 7webSaving Sony before it falls2005-03-17
- 8webSony: A Legacy of Innovation, Creativity, and Global LeadershipFebruary 9, 2025
- 9magazineAs Sony's TV Business Crumbles, a Look Back at Its Most Iconic SetsBryan Gardiner
- 11web2019 Market Share Data Shows Canon and Sony Growing, Nikon Shrinking14 August 2020
- 14webSamsung tops global TV market for 15th consecutive year2 February 2021
- 15webLG and Sony Led OLED TV Gains in Advanced TV Market in Q4Artem Alekseenko — 4 March 2021
- 16newsHow Samsung fell behind Sony and LG in the premium TV market2 May 2018
- 18encyclopediaA Frog in a Well Knows Nothing of the Ocean: A History of Corporate Ownership in JapanMorck, R. K. — University of Chicago Press — 2005
- 20webThe Global 2000 2023
- 21newsIt all began with a failed rice cooker – a glimpse at Sony's historyGSMArena.com — December 21, 2023
- 22webShirokiya Department Store, c. 1910–1940. | Old TokyoStephen Sundberg — 18 September 2016
- 24newsPioneering firm upsets Japan hiring: Pattern brokenNobuo Abiko — 26 March 1966
- 26newsA history of Sony's successes and failuresRupert Neate — 1 December 2014
- 27bookSony vs Samsung: The Inside Story of the Electronics Giants' Battle For Global SupremacySea-Jin Chang — John Wiley & Sons — 25 February 2011
- 28bookSony: The Company and Its Founders: The Company and Its FoundersRobert Grayson — ABDO Publishing Company — 1 September 2012
- 31bookSony : the private lifeJohn Nathan — Houghton Mifflin — 1999
- 35bookHow to Hide an Empire: A History of the Greater United StatesDaniel Immerwahr — Straus, and Giroux Farrar — 2019
- 38webLive from Sony IFA 2009 press event2009-09-02
- 39webSony reorganizes into 'One Sony', prioritizes digital imaging, gaming and mobileJeff Blagdon — 27 March 2012
- 40newsAs losses mount, Sony's Hirai seeks cure for TV business in spinoffSophie Knight et al. — 6 February 2014
- 41newsSony to shutter two-thirds of its US storesBen Gilbert — 26 February 2014
- 42webPS4 company Sony to sell its entire stake in Square Enix, valued at around $47 millionMakuch, Eddie — 16 April 2014
- 43webSony, Shanghai Oriental Pearl to set up China PlayStation JVs25 May 2014
- 44webToshiba sells sensor business to Sony, overhauls chip unit28 October 2015
- 45webSony Rebrands Retail Stores, Kills off Sony Style and Launches a New Store InitiativeSohrab Osati — 4 June 2017
- 46newsWhy would Sony merge its gaming and film units?Rachel Aldrich — 12 December 2016
- 47newsSony considers merging gaming and film divisionsClaire Atkinson — 12 December 2016
- 51webSony to complete sale of battery business to Murata in September19 July 2017
- 53newsSony Merges Electronics Divisions, Hiding Staggering Mobile Losses – ExtremeTechRyan Whitwam — 28 March 2019
- 54press releaseAnnouncement of New Sony Group Organizational Structure1 May 2020
- 56press releaseAnnouncement of Decision Regarding Company Split (Small-scale Company Split) of Electronics Products & Solutions Business17 November 2020
- 57webLou Ottens obituary17 March 2021
- 58bookThe Power of Marketing: Practitioner Perspectives in AsiaNelly Nailaite Ma'arif — Penerbit Salemba — 2008
- 59webU-matic (1971 – 1990s)20 January 2018
- 60newsSony is finally killing off Betamax video tapesSophie Curtis — 10 November 2015
- 61webThe History of Format Wars and How Sony Finally Won... For Now29 July 2016
- 62webDigital Betacam (1993–2016)28 May 2014
- 63webVideo8 (1985 – 2000s)27 May 2014
- 64webWhat's DAT Sound?10 October 2014
- 65webSony introduces first televisions to feature LED backlights19 August 2004
- 68webSony's new Triluminos TVs pursue vibrant hues with quantum dotsJeff Blagdon — 16 January 2013
- 70newsThe WalkmanMeaghan Haire — 1 July 2009
- 71webMiniDisc (1992–2013)16 November 2013
- 73bookThe Power of Marketing: Practitioner Perspectives in AsiaNelly Nailaite Ma'arif — Penerbit Salemba Empat — 2008
- 74webWhy isn't SDDS in the consumer market?5 July 2004
- 75webThe Life and Times of the Late, Great CDRyan Waniata — 7 February 2018
- 78bookPower of MarketingNelly Nailatie Ma'arif — Penerbit Salemba — 2008
- 80webIBM and Sony cram up to 330 terabytes into tiny tape cartridgeSebastian Anthony — 2017-08-02
- 82newsSony's Answer to Apple Pay Is Laying Tracks for Asian ExpansionPavel Alpeyev et al. — Bloomberg Business — 15 October 2015
- 83webSony unveils LPWA IoT communication module30 May 2019
- 84bookHigh Score!: The Illustrated History of Electronic GamesRusel DeMaria et al. — McGraw-Hill/Osborne — 2003
- 85magazineCelebrating SoftwareJune 1991
- 86magazineThe Making Of: PlayStationEdge Magazine — April 24, 2009
- 88bookWorld Intellectual Property Indicators 2020World Intellectual Property Organization — World Intellectual Property Organization (WIPO) — 2020
- 91newsThe History of HeadphonesGeorgia Wells — 7 September 2016
- 96newsApple? Bose? What your headphones say about youAdam Wray — 30 January 2020
- 97webFive of the best noise-cancelling headphones16 March 2019
- 100webSony Volkswagen OEM car audio5 September 2021
- 102webSony Mobile ES car audio
- 104newsSony brings OLED TV to U.S.7 January 2008
- 106newsSony, Samsung Ask U.S. Retailers to Curb Discounts on TV SetsJun Yang et al. — 23 May 2012
- 108webSony sells $940m LCD stake to Samsung to slash TV losses.27 December 2011
- 109webSony and Sharp in LCD panel joint ventureSony.net
- 110webSony and Sharp officially terminate LCD partnershipChris Welch — 2 May 2012
- 112webSony 2017 TV line-up – full overview with prices2 February 2017
- 114newsDell Details on Notebook Battery RecallDirect2Dell — 14 August 2006
- 115newsDell announces recall of 4.1 million laptop batteriesCBC News — 14 August 2006
- 116newsSony, Dell battery issue heats upCBC News — 24 August 2006
- 117newsSony flamed for battery bungleBobbie Johnson — 2006-08-30
- 118webTablet & Smartphones | Xperia™ Tablet & SmartphonesSony — 30 July 2009
- 119newsSony sells its VAIO PC business, makes TV arm its own subsidiaryMat Smith — 6 February 2014
- 120webSony To Exit PC Business By Selling VAIOCatherine Shu — AOL, Inc — 6 February 2014
- 121newsCOMPANY NEWS; Sony Is Near Macintosh Pact1991-02-16
- 122newsCOMPANY NEWS; SONY WILL SUPPLY NOTEBOOK COMPUTERS TO DELL1993-12-22
- 123webThe life of Pi: Ten years of Raspberry Pi. The most successful computer ever to come out of the UK celebrates its tenth anniversary this year.Sarah Collins — University of Cambridge — 2022-02-28
- 124av mediaTour the Raspberry Pi factory in Wales, UK2023-07-23
- 125av mediaHow Raspberry Pis are made (Factory Tour)2023-06-08
- 126webAnnouncement of Agreements Between Olympus and Sony to Form Business and Capital AllianceOlympus-global.com
- 127press releaseEstablishment of Sony Olympus Medical Solutions Inc.Sony Olympus Medical Solutions — 16 April 2013
- 128press releaseEstablishment of a New Company to start genome information platform businessSony Corporation — 23 January 2014
- 129press releaseSony and Ericsson complete joint venture agreementSony — 28 August 2001
- 132webTopic: Sony
- 133webForm 20-F (FY2020)Sony Group Corporation
- 134newsUPDATE 2-Sony upbeat on games and robots but cuts outlook for image sensors29 June 2016
- 135webSony is launching a new company to make camera dronesSamuel Gibbs
- 136webThis is Sony's Airpeak droneChaim Gartenberg — 11 January 2021
- 137webLondon Design Festival: Affinity in Autonomy26 August 2019
- 146newsSony launcht weltweit erste Intelligent-Vision-Sensoren mit KI-VerarbeitungKlaus Lorbeer/pi — 14 May 2020
- 147webPS3 overtakes Xbox 360 in worldwide shipments – ReportEddie Makuch
- 148press releasePLAYSTATION 4 SELLS 5.9 MILLION UNITS WORLDWIDE DURING THE 2017 HOLIDAY SEASONSony Interactive Entertainment Inc. — 8 January 2018
- 149webSony leads virtual reality patent race13 May 2015
- 150webPlayStation VR Launches Today Across the United States and CanadaShawn Layden — 13 October 2016
- 151webPS5 sales figures revealed — and they are staggeringDarragh Murphy — 3 February 2021
- 152webSundstrand Selling Trans Com Systems To Sony10 July 1991
- 153webRockwell Collins Acquires Sony Trans Com1 June 2000
- 154web2011 Market Share and Box Office Results by Movie Studio31 December 2011
- 157newsSony President Puts Best Face on Studio WoesJames Bates et al. — 20 November 1996
- 162newsSony BMG rootkit scandal: 5 years laterBob Brown — 1 November 2010
- 163webSony to Buy Gracenote Music Data Company23 April 2008
- 164webTribune To Acquire Sony Audio Recognition Unit Gracenote For $170 Million23 December 2013
- 165newsSold! EMI Music Publishing to Consortium Led by Sony/ATV, Michael Jackson Estate for $2.2 BillionShirley Halperin — 30 June 2012
- 167webSony Finalizes Acquisition of Michael Jackson Estate's Stake in Sony/ATV PublishingEd Christman — 30 September 2012
- 168webSony's Funimation acquires anime streaming service Crunchyroll for $1.175 billionD. M. Moore — 9 December 2020
- 170webSony Merges Anime Streaming Businesses Under Funimation-Led Joint Venture (EXCLUSIVE)Todd Spangler — 24 September 2019
- 171newsSony to buy AT&T's anime business for $1.18 billion to expand global footprintMakiko Yamazaki et al. — 10 December 2020
- 172webSony's Funimation Global Group Completes Acquisition of Crunchyroll from AT&TAlex Mateo — 9 August 2021
- 173webWinners of the 2019 Nobel Prize in chemistry developed lithium-ion batteriesAkshat Rathi — 9 October 2019
- 174webSony eyes electric car future, wants to soon sell you Li-ion batteriesJoseph Volpe — AOL — 19 July 2019
- 178press releaseSigning of Memorandum of Understanding for the Transfer of Battery BusinessMurata Manufacturing Co., Ltd. & Sony Corporation — 28 July 2016
- 179webSony tests the waters for self-driving cars with a small investment19 July 2019
- 180newsSony surprises with an electric concept car called the Vision-SSean O'Kane — 7 January 2020
- 182webHonda & Sony establish SHM joint venture2022-10-15
- 183newsSony, Honda aim to deliver premium EV with subscription fees in 2026Satoshi Sugiyama et al. — 2022-10-13
- 184webSony and Honda just announced their new electric car brand, AfeelaAndrew J. Hawkins — 2023-01-05
- 185webソニーグループ【6758】の大株主情報2024-06-05
- 188webコロナに負けない「金持ち企業」トップ500社 企業ランキング2 June 2020
- 189webSony Market capitalization7 January 2024
- 191newsSony's Shopping Spree Is 'Wrong Direction' in Apple Battle: TechNaoko Fujimura — 12 December 2011
- 193newsSony to cut 8,000 jobs worldwideJustin McCurry — 9 December 2008
- 195newsSony, Sharp Losing $11 Billion Leaves Investors Let DownMariko Yasu et al. — 11 April 2012
- 196newsSony ups ad spend to Rs.450 cr7 June 2012
- 197newsSony to Cut 1,000 Jobs to Reduce Costs at Mobile UnitAdam Ewing et al. — 23 August 2012
- 198newsSony sees return to profit, aims to halve TV losses10 May 2012
- 199newsSony to sell its U.S. headquarters building for $1.1 billion18 January 2013
- 200webLabels Sony Credit Rating 'Junk' Amid Lower DemandMorgan Chilson
- 202webSony to close South African TV, HiFi and camera divisionDavid Greenway — 2 October 2014
- 204webSony launches first SA store6 April 2017
- 206webSony mobile is losing more than gaming division is gaining (which is a lot of money)1 November 2018
- 207webSony shuts China smartphone plantSteve McCaskill — 29 March 2019
- 208webReport: Sony to lay off half of its mobile division staff by 2020 (2,000 people)Cosmin Vasile — 29 March 2019
- 209webSony to spin off Israel chipmaking activity3 November 2025
- 211webSeeing Mali: a digital project for children – in pictures16 June 2011
- 212webSony helps S African mobile library project29 May 2008
- 213newsSony Foundation Funds Salvos Sound Point Centre In GoodnaPaul Cashmere — 5 October 2012
- 214webSony Foundation raises over $880k with Wharf4Ward24 October 2014
- 215newsSony – engaging untapped audience through crowdsourcingSimon Beavis — 26 May 2011
- 217webSony Street Stadiums –7 March 2014
- 218webSony Establishes $100M COVID-19 Global Relief FundNancy Tartaglione — 2 April 2020
- 220journalThe Magnificence of the Disaster: Reconstructing the Sony BMG Rootkit IncidentDeirdre Mulligan — 2006-01-02
- 221webPlayStation to remove hundreds of TV shows from players' libraries due to "licensing issues"NME.com — 2023-12-04
- 222webTexas Sues TV Makers, Claiming They Can Collect Images of What Viewers Are WatchingMatt Novak — 2025-12-17
- 223webGuide to Greener Electronics 17th EditionNovember 2011
- 225webGreener electronics Sony ranking: Fourth Edition27 June 2007
- 226newsSony hits bottom of Greenpeace eco rankingsTed Samson — 9 July 2007
- 231newsSony's PR War on ActivistsDanielle Knight — 22 September 2000
- 232newsEU fines Sony, others for videotape price fixes20 November 2007
- 233newsEU fines Sony, Fuji, Maxell for videotape price fixing21 November 2007