Sumitomo Mitsui Financial Group - Company History

Sumitomo Bank traces to the Sumitomo family, which traded under the house name Izumiya and built its fortune around the Besshi copper mine. Early in the Tokugawa era, in 1670, Izumiya Heibei Tomosada took up money-changing, and finance became one arm of the family’s business. The Meiji Restoration closed off its old rice-broker and warehouse-lending trades, but in 1875 the house resumed finance through commodity-collateral lending. When the Bank Ordinance opened the way, Sumitomo Kichizaemon founded Sumitomo Bank in November 1895 at Nakanoshima in Osaka, with capital of ¥1m.

What set Sumitomo apart from the other zaibatsu banks was the mine. The steady earnings of Besshi gave it an unusually thick base of own-capital, and the family reorganized the bank into a joint-stock company in 1912. By the end of 1919 it ranked third in the country behind Dai-Ichi and Mitsui, its growth carried by that capital depth and by an early international bent few rivals shared.

That international instinct showed first in 1916, when Sumitomo became the first Japanese city bank to open a branch in San Francisco, followed by Hawaii, Shanghai, Bombay, London and New York. While other zaibatsu banks concentrated on building domestic networks, Sumitomo alone moved abroad first — the origin of an international character it would keep for a century. When the Showa financial crisis of 1927 toppled bank after bank, deposits fled to the institutions savers trusted, and by the end of 1929 Sumitomo stood first among Japan’s ordinary banks. Credit strength had turned an external shock into a chance to consolidate — a pattern that would repeat in the postwar reorganizations to come.

Defeat and occupation forced a reinvention. After GHQ ordered the zaibatsu dissolved in 1945, the Sumitomo head company was broken up, and in October 1948 the bank had to drop its name, becoming Osaka Bank. It listed on the Tokyo and Osaka exchanges in 1949, and once the peace treaty took effect it restored the Sumitomo Bank name in December 1952 — the famous name suppressed for barely four years.

Through the high-growth decades the bank built a reputation for lean efficiency, its deposits per employee ahead of its peers. In 1960 a tie-up with Prince Motor Sales to finance car purchases pioneered consumer finance in Japan; in 1965 it absorbed Kawachi Bank, and in 1967 it ran the first comprehensive online system among the city banks. Under the rationalist Shozo Hotta it closed on Fuji Bank, then the industry leader.

But the trait that would define Sumitomo was a willingness to take the loss first. When the 1973 oil crisis exposed the collapse of the trading house Ataka Sangyo — brought down by a failed third-country trade at its U.S. arm — president Ichiro Isoda chose to fold Ataka into Itochu rather than let its failure trigger wider panic. Sumitomo shouldered $440.5M (¥113bn) of the bank-group rescue and wrote it off in full in the September 1977 accounts. “Getting a hundred-odd billion back was impossible,” Isoda later said; “we simply threw it away.” The bank recovered top position by 1980. The same discipline returned after the bubble: as the Itoman loans went bad, Sumitomo wrote off more than $8.5B (¥800bn) of bad debt in the year to March 1995, ahead of every other city bank — posting a loss but clearing the wreckage first, a head start that would help in the merger to come.

The central deal of the Heisei bank consolidation came in April 2001, when Sumitomo Bank merged with Sakura Bank — itself the old Mitsui Bank line — to form Sumitomo Mitsui Banking Corporation (SMBC), joining two zaibatsu banks into the country’s second-largest megabank. In December 2002 the group placed itself under a holding company, Sumitomo Mitsui Financial Group, with Yoshifumi Nishikawa as its first president. The final bubble cleanup still hurt — a net loss of $4.0B (¥465bn) in the year to March 2003, and another in the year to March 2005 — but the group cleared it while banking the scale the merger brought.

A run of leaders — Nishikawa, then Teisuke Kitayama (2005–11), Koichi Miyata (2011–17) and Takeshi Kunibe (2017–19) — held to a philosophy of combining the “best practice” of the Sumitomo and Sakura sides. Kunibe would later contrast their smooth integration with Mizuho’s troubled systems merger, arguing that in a merger the trust between the managers themselves is decisive. A net loss of $4.0B (¥373bn) in the Lehman year was recouped the next; from the early 2010s the group settled into steady profits, its blend of old-Sumitomo internationalism and old-Sakura domestic reach marking out a distinct place among the three megabanks.

Miyata reframed the business itself, describing a shift from passively lending against demand to leading with solutions — fees, consulting and investment banking — a line that held as negative rates squeezed domestic margins and SMBC Nikko and overseas units carried fee income. That reframing set up the “beyond banking” push to come. The group also grew by acquisition through these years, taking retail broking from a crisis-hit Citi with Nikko Cordial in 2009 and absorbing the consumer lender Promise in 2011 (both examined below).

Under Jun Ota, president from 2019, Sumitomo Mitsui pressed a “beyond banking” agenda and an aggressive overseas build-out. In 2021 it forged a strategic alliance with the U.S. investment bank Jefferies — borrowing a foreign franchise rather than building one — bought the aircraft lessor Goshawk in 2022, and took stakes in Vietnam’s FE Credit and VPBank. But the same appetite cut both ways: FE Credit’s post-pandemic losses forced goodwill impairments of more than $1.3B (¥180bn) over two years, and in December 2023 Ota died suddenly.

His successor, Toru Nakashima, turned back toward the domestic customer. The group is building Olive — a single app bundling account, payments, securities and insurance — into a new revenue engine, past 12 million accounts, and has widened into non-financial customers through tie-ups with SBI Securities and PayPay. Earnings reached records — net income of $6.4B (¥963bn) in the year to March 2024 and $7.9B (¥1.18tn) the next — while the group ran down its cross-shareholdings, set a return-on-equity target of 10% by fiscal 2028, and kept buying abroad, taking a stake in India’s YES Bank and agreeing to acquire the U.S. lessor Air Lease Corporation in November 2025.