The alliance that made Morgan Stanley a top foreign bank in Japan

JAPAN'S financial markets are undergoing their most consequential shift in decades. Companies are unwinding cross-shareholdings, raising return on equity toward 12%, and pouring capital into AI infrastructure, energy security and defence. Households, long hoarding cash, are finally moving savings into equities - retail flows through the government's tax-advantaged NISA scheme (the Nippon Individual Savings Account) have already exceeded the target originally set for 2027. Japan-related M&A climbed 60% in 2026, after a record $385bn in 2025. It is a once-in-a-generation opening for investment banks.

Foreign institutions have been trying to crack Japan's financial system since at least the 1980s, when Goldman Sachs joined the Tokyo Stock Exchange and other Wall Street names opened branches. For much of that period they struggled. Client networks ran through keiretsu - the intertwined corporate groups centred on Japanese banks - and outsiders found little to sell. Tariffs and industrial policy may be the more familiar form of protectionism, but entrenched distribution can be just as effective at keeping out competitors.

Morgan Stanley has found a way around the problem. Through a joint venture with Mitsubishi UFJ Financial Group (MUFG), Japan's largest financial institution, Morgan Stanley has built what is widely regarded as one of the most profitable foreign operations in the country's securities business. The firm's wider Asia revenue, which includes Japan and Australia, closed in on $10bn last year. The figure has not been broken out by country, but Morgan Stanley's Japan operation, with roughly 1,300 employees and operations spanning institutional sales and trading, wealth management, investment banking and investment management, almost certainly accounts for a large share. Goldman Sachs, its nearest rival, generated ¥125.5bn ($800m) from its Japanese brokerage arm in the year to December, a 15-year high but not a title.

The structural explanation is not hard to see. In 2008, Morgan Stanley and MUFG launched a global strategic alliance. Two years later they established a two-company joint venture: Morgan Stanley MUFG Securities, which serves institutional clients, and Mitsubishi UFJ Morgan Stanley Securities, which handles wealth management and corporate advisory. Morgan Stanley controls the institutional arm; MUFG controls the retail-facing one. Both are bound together by cross-shareholdings and shared management. In 2023 the pair announced "Alliance 2.0", further integrating research and equity businesses.

The arrangement is clever because it turns what was once a barrier into a bridge. MUFG brings Japan's deepest client relationships. Morgan Stanley brings global market-making, balance-sheet capacity, and wealth-management know-how that Japanese banks still find difficult to replicate. Neither party could have done it alone.

To be sure, the alliance carries a governance quirk worth noticing. MUFG holds a 23.3% stake in Morgan Stanley - a material, though non-controlling, interest. The Japanese shareholder is thus invested in the American firm's global success, while the American firm is embedded in the Japanese shareholder's domestic franchise. That kind of interlocking stake can create alignment or entanglement, depending on which way the wind blows. So far the result has been growth: Morgan Stanley reported global revenues of $70.6bn for full-year 2025, with a return on tangible common equity of 21.6%, and has consistently surpassed Goldman Sachs in Asia for the past three years.

The deeper question is whether the moat will hold. The structural tailwinds in Japan are not Morgan Stanley's invention, and other foreign banks are waking up to the same opportunity. Goldman Sachs' 15-year high in Japan is a signal that the gap may be narrowing. Japanese incumbents are also reforming under pressure from shareholder activists and from the Tokyo Stock Exchange's own governance rules, which have urged low-returning firms to take remedial action. The NISA scheme, which has already surpassed its equity-flow target, will continue to funnel retail savings into financial products over the coming decade.

The opportunity, in other words, is broad, and the race is not over. Morgan Stanley's advantage is the first-mover benefit of a partnership that most competitors lack. But first-mover advantages in Japan have a habit of looking durable until they are not.

Mr Alberto Tamura, Morgan Stanley's Japan CEO, has said the alliance is "the only way" the firm will become the top securities house in Japan. That is a confession that scale, relationships and regulatory standing matter more than product quality alone. It is also a reminder that in Japan, as in many markets, the firm with the deepest local ties has the best shot at capturing the next wave of capital.

For investors in Morgan Stanley, the Japan operation is a useful illustration of the firm's strategy, not a decisive weight. Japan revenue, even at or above $1bn, represents a fraction of the firm's $70bn global total. The stock's valuation - and AInvest's aggregate signal, which labels Morgan Stanley a Hold - hinges on wider dynamics: the trajectory of wealth-management fee income, the cyclical behaviour of investment banking, and the firm's ability to deploy leverage without tripping over capital costs.

The broader lesson for policymakers is less ambiguous. Japan's financial-market revival is not a story of deregulation or liberalisation in the textbook sense. It is a story of institutional partnerships that quietly bypass old barriers while the state reforms from the outside. The NISA scheme, stock-exchange governance pressure and corporate Japan's belated focus on returns are creating an environment where capital flows more freely. That is a good outcome even if it arrives by a less conventional route.

Foreign banks will profit from it. Japanese households, who stand to shift perhaps $1.7tn into equities if their allocation moves to something resembling European norms, should profit more. The trick, for Tokyo's regulators and corporate boards alike, is to ensure the gains are wide enough that the revival does not become another chapter in the long history of Japanese markets serving the interests of a few.

Better to reform the system than to let a foreign alliance do it by proxy.