Sumitomo Corporation - Company History
- Founding
- In December 1919 the company was established as Osaka Hokko with capital of ¥35 million, to reclaim, level and build port works in the north Osaka harbour district. In November 1944 it absorbed Sumitomo Building and renamed itself Sumitomo Tochi Komu, and the following month it took over the practice of the Hasebe-Takekoshi Architectural Office to become an integrated property company. The Sumitomo zaibatsu had had no trading house for twenty-five years, ever since its director-general Suzuki Masaya declared in 1920 that none would be established. In November 1945 director-general Furuta Shunnosuke revoked that twenty-five-year ban, renamed the company Nippon Kensetsu Sangyo and relaunched it as a trading company. It listed on both the Osaka and the Tokyo stock exchanges in August 1949 and took the name Sumitomo Corporation in June 1952. It is a trading house born of a prohibition its own house lifted, and it started a quarter of a century behind the other zaibatsu.
- The Decision
- The years it did not invest became, directly, the equity that absorbed the loss. In January 1981 President Uemura Mitsuo held investment and lending inside what the financial base could carry, and stated plainly that as a matter of principle the company would not take on projects needing more than ten years to recover. It joined neither Mitsubishi Corporation in Brunei LNG nor the Iranian petrochemical project into which Mitsui & Co. poured more than a decade without being able to withdraw, and it built up retained earnings instead. In January 1988 it set out an integrated business enterprise concept, moving the centre of gravity towards putting capital into operating companies and raising their value. In June 1996 the off-book trading of Hamanaka Yasuo, general manager of the non-ferrous metals department, came to light; the company put disclosure of the loss and full co-operation with the authorities above everything else, and in the year to March 1997 it charged $2.4B (¥285bn) of copper-related losses. The equity accumulated over fifteen years absorbed the affair, and Sumitomo Corporation escaped negative net worth.
- Today
- It is not a trading house that earns from resources. In the year to March 2026 revenue was $46.4B (¥7.34tn) and profit attributable to owners of the parent $3.8B (¥600bn). Of the $3.6B (¥567bn) of segment profit across the nine business groups, Energy Transformation contributed $647.4M (¥102bn), Transportation & Construction Systems $562.1M (¥89bn) and Mineral Resources $520.4M (¥82bn) in third place, with Diverse Urban Development fourth at $515.3M (¥82bn). In October 2005 the company turned away from its risk-averse line and entered resource investment, joining the Ambatovy project in Madagascar with a 47.7 per cent interest; construction costs swelled to US$7.2 billion, and in the year to March 2015 it wrote down $2.6B (¥310bn) across resources as a whole. In May 2026 it sold its entire holding and withdrew, and the profit has leaned towards the businesses it runs itself.
- Competition
- What it has fought over is not the size of an interest but control of a business. When KDDI came in as the largest shareholder of Jupiter Telecommunications — the company Sumitomo Corporation had co-founded in 1995 and raised for fifteen years — it secured the largest holding in J:COM by tender offer in February 2010, adding voting rights through an offer carrying a high premium. In resources it chose differently: where Mitsubishi Corporation joined Brunei LNG in 1969 on an interest equal to Shell's, Sumitomo Corporation did not take part. Its net profit of $3.8B (¥600bn) for the year to March 2026 ranked fourth, behind Itochu at $5.7B (¥900bn), Mitsui & Co. at $5.3B (¥834bn) and Mitsubishi Corporation at $5.1B (¥800bn), and ahead of Marubeni at $3.4B (¥544bn). After Elliott acquired shares in May 2024, it strengthened shareholder returns under Medium-Term Management Plan 2026 and promised an ROE of 12 per cent or more. Because it has taken management control rather than interests, its profit is decided by how the individual businesses run rather than by the commodity market of the year.
Timeline
1945–1972The zaibatsu without a trading house builds one out of a property company
- 1919Osaka Hokko Co. established for reclamation in the north Osaka harbour district
- 1920The Sumitomo zaibatsu declares it will establish no trading house
- 1927The company passes under Sumitomo Goshi
- 1944Absorbs Sumitomo Building and renames itself Sumitomo Tochi Komu
- 1945Relaunched as a trading company; renamed Nippon Kensetsu Sangyo
- 1946Sales department opened
- 1947Toji Shunya becomes president after the purge of public office
- 1948Headcount reaches 720
- 1949Shares listed on the Osaka and Tokyo stock exchanges
- 1950Design and supervision arm split off as Nikken Sekkei Komu
- 1952Nikken New York Inc. established; renamed Sumitomo Shoji in June
- 1962Product-headquarters system introduced across nine headquarters
- 1967Capital raised to ¥10.5bn
- 1969Sumisho Computer Service established, entering information services
- 1970Sogo Boeki absorbed; twin head offices in Osaka and Tokyo adopted
1973–1996Twenty years of staying out, and the credit one trader destroyed
- 1975North American vehicle sales for Mazda begin; Sumisho Electronics established
- 1976Invests with Sumitomo Metal Industries in seamless pipe for Saudi Arabia
- 1978English corporate name changed to SUMITOMO CORPORATION
- 1979Sales-division system introduced
- 1981Uemura Mitsuo rules out projects running beyond ten years
- 1981Ordinary profit margin of 0.38 per cent, first in the industry
- 1983Sumisho Lease lists on the Second Section of the Osaka exchange
- 1988The integrated business enterprise concept is announced
- 1989The information-services subsidiary lists on the Tokyo Stock Exchange
- 1990Akiyama Tomiichi becomes president
- 1991Medium-term business plan Strategy 95 drawn up
- 1995Jupiter Telecommunications established
- 1996Off-book copper trading disclosed
1997–2014The years the centre of gravity moved from trading to business investment
- 1997Copper-trading loss of ¥285.2bn charged as an extraordinary item
- 1997Sumitomo Corporation Europe established
- 2001Reorganised into nine business divisions and twenty-eight headquarters
- 2001Registered head office moved to Chuo-ku, Tokyo
- 2005Decision to join the Ambatovy nickel project
- 2005Sumisho Auto Leasing made a wholly owned subsidiary by share exchange
- 2010Tender offer secures the largest holding in Jupiter Telecommunications
- 2010A 30 per cent interest in the Usiminas mine acquired
- 2011Sumisho Computer Systems and CSK combine to form SCSK
- 2012Joins a tight-oil development business in Texas
- 2014Domestic block system abolished; regional offices established
2015–2026A ¥310.3bn impairment, and a promise to shareholders about capital efficiency
- 2015Impairments of ¥310.3bn charged in the year to March
- 2015The group system in the corporate organisation is abolished
- 2018Head office relocated
- 2020Berkshire Hathaway discloses stakes above 5 per cent in the five trading houses
- 2021The only one of the five big trading houses to fall to a net loss
- 2021Energy Innovation Initiative established
- 2022Transfers to the Prime Market
- 2023Cumulative impairments on Ambatovy reach ¥266bn
- 2024Elliott Management acquires shares in Sumitomo Corporation
- 2024Medium-Term Management Plan 2024-2026 announced
- 2025Joins the acquisition of Air Lease Corporation
- 2025Decision to take SCSK private for ¥880bn
- 2026Berkshire Hathaway's holding passes 10 per cent
Founding Story
1945–1972The zaibatsu without a trading house builds one out of a property company
Sumitomo Corporation is the general trading house that Sumitomo had forbidden itself to own. For twenty-five years the house rule was that the zaibatsu would have no trading company; when the war ended and there were demobilised employees to place, the rule was revoked and the trading arm was opened as a department inside an existing property company rather than as a new company of its own. A business that began in defence rather than attack learned the manners of defence, and the caution of the next fifty years followed from it.
Lifting a 25-year ban to make room for demobilised employees
In 1920 the Sumitomo zaibatsu, through its director-general Suzuki Masaya (鈴木馬左也), declared that it would not establish a trading house[1], and for the next twenty-five years it sealed itself off from the trading business. While Mitsui had Mitsui & Co. and Mitsubishi had Mitsubishi Corporation, each with the full function of a general trading house (総合商社, sogo shosha), Sumitomo ran its businesses as the zaibatsu without one[2]. The entity that would later become Sumitomo Corporation was not a trading house either. It began as Osaka Hokko Co. (大阪北港株式会社), incorporated in December 1919 with capital of ¥35 million to reclaim land and build port works in the northern harbour district of Osaka[3]. The company passed under Sumitomo Goshi in 1927[4]; in November 1944 it absorbed Sumitomo Building and renamed itself Sumitomo Tochi Komu (住友土地工務)[5], and the following month it took over the practice of the Hasebe-Takekoshi Architectural Office, becoming an integrated property company engaged in real-estate management and in the design and supervision of civil-engineering and construction work[6].
With the war's end in August 1945 military demand vanished, and securing places for demobilised employees became urgent; director-general Furuta Shunnosuke (古田俊之助) therefore decided to revoke the ban[7]. That November, Sumitomo Tochi Komu renamed itself Nippon Kensetsu Sangyo (日本建設産業) and relaunched as a trading company handling the products of the Sumitomo affiliates and of leading manufacturers across other industries[8]. The business purposes in its articles of incorporation were widened to include the sale of civil-engineering and construction materials and of products of every other kind[9]. Kitazawa Keijiro (北澤敬二郎), the managing director of Sumitomo Honsha who had held the presidency concurrently, resigned, and executive director Takekoshi Kenzo (竹腰健造) succeeded him[10]. To choose someone to run the trading side, the accounting and personnel departments of Sumitomo Honsha put forward three candidates from the whole staff and settled on Toji Shunya (田路舜哉), a director of Sumitomo Metal Industries and deputy head of its copper and brass works[11]. Toji took office as managing director on 11 December and, three weeks later, had the organisation and the staffing in place for a sales department dated 1 January 1946[12].
The head office was in Osaka[13]. At the end of 1945 the payroll stood at 270; by the end of 1948, 350 people had transferred in from Sumitomo Honsha and the affiliated companies, demobilised servicemen and repatriates among them, taking the total to 720[14]. The largest contingents came from Sumitomo Honsha (159), Sumitomo Metal Industries (106) and Sumitomo Electric Industries (32)[15]. The sales department's first work was to dig out the aluminium and duralumin sheet buried in the bombed copper and brass works of Sumitomo Metal Industries, and the electric wire submerged by the storm surge of the Makurazaki typhoon at Sumitomo Electric Industries, then wash it, make it good and sell it[16]. When the purge from public office reached the business world in January 1947, three men who had been managing directors or above during the war — President Takekoshi among them — fell under it, and at the board meeting of 27 March Toji was chosen as the second president[17].
Listing, a new name, and the settled shape of a metals house
In August 1949, still under the name Nippon Kensetsu Sangyo, the company listed its shares on both the Osaka and the Tokyo stock exchanges[18]. In July 1950 it hived off the design and construction-supervision arm as Nikken Sekkei Komu[19], cutting away its origins as a property company. In March 1952 it placed an overseas base by establishing Nikken New York Inc. in the United States[20], and that June it renamed itself Sumitomo Shoji — Sumitomo Corporation[21]. Because its role was to carry the sales function of group companies such as Sumitomo Metal Industries and Sumitomo Metal Mining, its product mix leaned towards steel and non-ferrous metals, and in the industry it was called a kanehen house (金ヘン商社, after the metal radical in the Japanese script)[22]. Toji Shunya had spent six years from 1932 as manager of the Sumitomo Shanghai office (住友上海洋行), and was the only officer with trading experience among those in place at the relaunch[23].
In December 1962 the company brought the Osaka and Tokyo sales operations together as one and introduced a product-headquarters system, setting up nine headquarters: steel, non-ferrous metals, electrical equipment, machinery, agricultural and marine products, chemicals, textiles, materials and fuels, and real estate[24]. Capital was built up from $2.8M (¥1bn) in December 1956 to $29.2M (¥11bn) by June 1967[25], and in the 1967 business year the mix stood at metals 52 per cent, machinery 17 per cent, materials and fuels 12 per cent, chemicals 9 per cent, foodstuffs 8 per cent, and real estate and others 2 per cent[26]. The company also moved to strengthen its textile arm and to enter consumer businesses such as the Summit store chain, and turnover that year reached about $2.2B (¥790bn). Trading volume swelled so fast that the Sumitomo Shoji building in Kanda, Tokyo, was outgrown within three years[27]. In August 1970 it absorbed Sogo Boeki (相互貿易)[28].
1973–1996Twenty years of staying out, and the credit one trader destroyed
For two decades Sumitomo Corporation's standing rested on the deals it did not do. Uemura Mitsuo's rule against projects running beyond ten years kept it clear of the mega-schemes that burned its rivals and gave it the best margin in the industry, while the fields it worked in widened quietly through leasing, information services and vehicle distribution. Then, in 1996, a single trader's decade of off-book copper dealing cost it $2.4B (¥285bn) — a loss that only the capital it had refused to spend could absorb.
A management that avoided projects running beyond ten years
In June 1979 the company introduced a sales-division system, binding its product headquarters into four divisions: steel; machinery and electronics; non-ferrous metals, chemicals and fuels; and consumer goods and materials[29]. On taking the presidency in 1981, Uemura Mitsuo (植村光雄) stated plainly that there was no need to chase showy large deals, and that as a matter of principle the company would not take on projects running longer than ten years[30]. While Mitsubishi Corporation put money into Brunei LNG and Mitsui & Co. into the Iranian IJPC project that would later bring it enormous losses, Sumitomo Corporation went on declining to join large overseas projects[31]. The policy showed in the results: in the year to March 1981 it lifted sales by 27.0 per cent, closing on the fourth-ranked Marubeni, and its ordinary profit margin of 0.38 per cent was the highest in the industry[32].
Opinion inside the company was split between directors who thought that, having seen Mitsubishi's success in Brunei, Sumitomo should move more aggressively, and directors who supported the cautious line having seen Mitsui's failure at IJPC[33]. While avoiding long-dated projects, the company did widen the fields it worked in. It entered leasing in 1963[34], and in October 1969 established Sumisho Computer Service in Osaka Prefecture, taking it into information services[35]. In 1975 it began selling Mazda vehicles in North America[36], and in 1976 it invested, jointly with Sumitomo Metal Industries, in seamless pipe for Saudi Arabia[37]. In 1988 it set out an integrated business enterprise concept (総合事業会社構想), turning to a policy of pursuing business investment in earnest alongside its established trading, and in 1991 it drew up a medium-term business plan, Strategy 95[38].
Disclosing ¥285.2bn of off-book trading, and full co-operation with the authorities
In January 1995 the company established Jupiter Telecommunications in Tokyo to oversee and run a cable-television business[39]. In June the following year it disclosed that Hamanaka Yasuo (浜中泰男), general manager of the non-ferrous metals department, had continued off-book trading on the London Metal Exchange for about ten years from 1987 and had generated vast losses[40]. Hamanaka was said to move 5 per cent of the world's copper trade, and in the industry he was known as Mr Copper. The trades ran on personal relationships with counterparties, and had continued without the company's knowledge[41]. Losses first estimated at $1.7B (¥190bn) swelled as the investigation went on, and in the year to March 1997 the company took a single extraordinary charge of $2.4B (¥285bn) for copper-trading-related losses, leaving a net loss for the year of $1.2B (¥146bn)[42].
President Miyahara Kenji (宮原賢次) disclosed the losses, then engaged an American law firm and, with the co-operation of the external auditors, set about establishing the facts[43]. The company co-operated fully with the investigations of the US Commodity Futures Trading Commission and the UK Securities and Investments Board[44], placing the preservation of its international credit above everything else in its response. The consolidated equity ratio fell from 13.2 per cent to 10.3 per cent, but the company did not fall into negative net worth[45]: the capital accumulated by staying out of long-dated projects absorbed the loss. The business continued, and thereafter compliance with laws and regulations was put at the top of the management agenda[46]. More than twenty years on, the weight of the breach is still handed down to new recruits in their induction training[47].
Notes
- 住友商事社史 (Sumitomo Corporation company history)↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- Sumitomo Corporation, securities report, corporate history section↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- Sumitomo Corporation, securities report, corporate history section↩
- Sumitomo Corporation, securities report, corporate history section↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- Sumitomo Corporation, securities report, corporate history section↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “Preparing to open the trading division”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “Preparing to open the trading division”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “Preparing to open the trading division”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “Preparing to open the trading division”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “Preparing to open the trading division”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “The start of trading operations”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “The start of trading operations”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “The start of trading operations”↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “The change of president and the development of business”↩
- Sumitomo Corporation, securities report, corporate history section↩
- Sumitomo Corporation, securities report, corporate history section↩
- Sumitomo Corporation, securities report, corporate history section↩
- Sumitomo Corporation, securities report, corporate history section↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- 私の住友昭和史 (My Sumitomo Showa History, ed. Tsuda Hisashi, Toyo Keizai Shinposha, 1988), “The change of president and the development of business”↩
- Sumitomo Corporation, securities report, corporate history section↩
- Yomiuri Shimbun, 8 February 1967↩
- Yomiuri Shimbun, 8 February 1967↩
- Yomiuri Shimbun, 8 February 1967↩
- Sumitomo Corporation, securities report, corporate history section↩
- Sumitomo Corporation, securities report, corporate history section↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- Nikkei Business, 16 November 1981, “A study of Sumitomo Corporation’s advance”↩
- Nikkei Business, 16 November 1981, “A study of Sumitomo Corporation’s advance”↩
- Nikkei Business, 16 November 1981, “A study of Sumitomo Corporation’s advance”↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- Sumitomo Corporation, securities report, corporate history section↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- 産業と経済 (Industry and Economy), June 1976↩
- 住友商事社史 (Sumitomo Corporation company history)↩
- Sumitomo Corporation, securities report, corporate history section↩
- Morita Masao, “Problems in the audit of the Sumitomo Corporation massive-loss affair”, 現代監査 (Contemporary Auditing) No. 7, April 1997↩
- Morita Masao, “Problems in the audit of the Sumitomo Corporation massive-loss affair”, 現代監査 (Contemporary Auditing) No. 7, April 1997↩
- Sumitomo Corporation, securities report for the year to March 1997↩
- Morita Masao, “Problems in the audit of the Sumitomo Corporation massive-loss affair”, 現代監査 (Contemporary Auditing) No. 7, April 1997↩
- Morita Masao, “Problems in the audit of the Sumitomo Corporation massive-loss affair”, 現代監査 (Contemporary Auditing) No. 7, April 1997↩
- Sumitomo Corporation, securities report for the year to March 1997↩
- Newswitch (Nikkan Kogyo Shimbun), 4 April 2019, “An unending resolve on compliance — the top must talk with employees”↩
- Newswitch (Nikkan Kogyo Shimbun), 4 April 2019, “An unending resolve on compliance — the top must talk with employees”↩
References & sources
- Yomiuri Shimbun, 8 February 1967, on the house heading for ¥10bn of capital.
- Sangyo to Keizai, June 1976, on riding out the downturn at its own pace as the leading house of the west.
- Nikkei Business (Nikkei-McGraw-Hill), 16 November 1981, on Sumitomo Corporation turning contradiction into momentum.
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