Which Japanese Brokerage Is Actually Best? SBI, Rakuten, Nomura, and Mobile-First Specialists by Investor Type

1. The answer: there is no universal winner, but you do not have to choose blindly

Choosing a brokerage is less like ranking mobile networks by signal strength and more like choosing a toolbox. Someone making one monthly index-fund purchase, someone trading U.S. stocks at midnight, and someone planning an inheritance need different tools. A league table based on accounts, client assets, fees, app design, or telephone support alone usually rewards a strength that many readers will never use.

Still, if the field had to be narrowed to three candidates as of September 2026, this article's editorial ranking would be:

1. SBI Securities: the broad all-round candidate for investors who may expand from NISA into Japanese and foreign shares, funds, and bonds. Scale, product range, and several point and bank links are strengths; some users may find the web and app paths complicated.
2. Rakuten Securities: the leading candidate for Rakuten users maintaining contributions on a phone. It separates iSPEED for shares from iGrow for funds and NISA. Judge card rewards by applicable conditions, not the headline maximum.
3. Matsui Securities: a compelling choice for beginners valuing telephone and chat help with Japanese shares. Matsui says it earned HDI-Japan's top contact-center rating for a fifteenth consecutive year in 2025. This ranking values access to a person.^[11][12]

The ranking changes with the job. Monex or moomoo can enter the top three for a U.S.-equity specialist; Nomura or Daiwa can do so for a household needing face-to-face succession advice; Mitsubishi UFJ eSmart Securities becomes more attractive for MUFG, au, and Ponta users. PayPay Securities offers an unusually small entry point for trying Japanese and U.S. shares. The useful conclusion is therefore not “find the overall champion.” It is define the main account's one primary job, then select a leader for that job.

2. SBI leads in accounts; Nomura leads in assets—because “largest” has several meanings

“SBI is the largest” and “Nomura is the largest” can both be true. They measure different dimensions.

The SBI group passed 16 million securities accounts in May 2026, while assets held by SBI Securities exceeded ¥70 trillion at the end of April. Rakuten Securities passed 14 million general accounts in April, and reported about ¥57.4 trillion of assets in May. Rakuten's disclosed definition includes ordinary deposits at Rakuten Bank for clients who enabled the Money Bridge automatic-sweep service.^[1][2]

Nomura Holdings, meanwhile, reported ¥183.7 trillion of client assets in its Wealth Management division at the end of June 2026. Its account count does not match the online leaders, but each relationship can be much larger because the business serves wealthy households, corporations, local governments, employee share plans, bond clients, and families seeking estate-planning help.^[3]

These figures should not be dropped into a single spreadsheet without their definitions. SBI's headline is a group account count, Rakuten's assets can include linked bank deposits under stated conditions, and Nomura's measure belongs to its wealth-management segment. They are better used to understand each company's clientele and business model than to declare a simplistic champion.

Mid-sized and specialist firms are substantial too. Monex Securities passed three million general trading accounts in July 2026. Matsui reported about 1.77 million accounts and ¥5.43 trillion in assets at the end of March. Mitsubishi UFJ eSmart Securities exceeded two million accounts during 2026. The Financial Services Agency's list contained 413 financial instruments business operators as of April 1, 2026, but that number includes advisers and asset managers; it does not mean 413 full-service retail stockbrokers compete for one household.^[5][4][6][7]

Scale is one form of reassurance. It does not independently determine usability, execution, advice quality, or product suitability.

3. Why does Japan have so many brokerages? Fifty years of change in three stages

For retail investors in the 1970s and 1980s, securities business centered on branches and sales representatives, and equity commissions were not freely competitive. Brokers also distributed bonds, helped companies raise capital, and served corporate clients.

The decisive change came with Japan's late-1990s financial “Big Bang.” The government moved securities firms from a licensing regime to registration in principle, scheduled full liberalization of stock-trading commissions by the end of 1999, and opened more routes for financial groups and adjacent industries to compete. The FSA's policy review explicitly links registration and internet adoption to new entrants and competition in price and service.^[8]

Yamaichi Securities failed during that transition. Remembering only the televised apology and calling it a market-crash casualty misses the central lesson. An FSA research report identifies hidden off-balance-sheet liabilities and the resulting capital-ratio deterioration as the direct cause, rooted in secrecy, concealment, postponement, and broken governance. Losses had been shifted and hidden through the practice known as tobashi.^[9]

Online dealing then expanded through Matsui, SBI, Rakuten, Monex, and others, first competing on commissions and browser tools. From the late 2010s, mobile-first brokers, point investing, card-funded contributions, and automatic bank sweeps became acquisition channels. Japan does not simply have too many firms selling the same stock. Face-to-face advice, low-cost execution, analysis tools, bank integration, fractional investing, and institutional capital-market work are different businesses sharing a securities label.

Japan Post Bank and other banks also offer investment funds and NISA. Post offices act as financial-products intermediaries under delegation from Japan Post Bank. A familiar counter can be valuable, but the range differs from a general brokerage where clients freely trade listed individual shares. Choosing a bank for a nearby adviser or a brokerage for a wider securities menu can both be rational.^[10]

4. Eight providers on one framework: compare jobs, not logos

Exact commissions and point percentages change. The table captures each firm's durable direction as of September 2026. It is not a checklist where the most circles win; it asks which job the primary account should perform.

PayPay advertises Japanese shares, U.S. shares, and funds from ¥100 in specified channels. moomoo advertises commission-free Japanese cash equities and 24-hour trading for selected U.S. names. “Free” still may leave currency conversion, bid-offer spreads, margin interest, transfer-out charges, or market-data fees. Model the actual order you expect to place before deciding.^[13][14]

Japanese subsidiaries of overseas groups belong in the same framework. Interactive Brokers Securities Japan, for example, can be attractive to experienced investors seeking access to many markets, ETFs, options, or futures. It can be excessive for someone who primarily wants card-funded NISA contributions and branch assistance. “Foreign means modern” and “domestic incumbent means old” are useless rankings. Check the products actually available to a Japanese resident, the legal entity and registration, tax documents, yen funding, and support language.

5. NISA and point ecosystems: with the same fund, continuity creates the difference

When two brokerages offer the same index fund, the fund's investment performance is the same. What changes is availability, minimum purchase, contribution date, card cap, points on purchase or holdings, bank sweep, application flow, customer service, and the friction of a future move.

SBI lists Japanese shares, funds, and foreign shares within its NISA menu and pursues multi-point and multi-card integrations rather than locking every customer into one reward. V Points fit naturally for a Mitsui Sumitomo Card and Olive user, but the reward can depend on card type, annual spending, or an Olive bank balance. Points should be the last tiebreaker when the same low-cost product can be bought with the same effort, not the investment thesis.^[1]

Rakuten combines iSPEED for equity trading with iGrow for buying, contributing to, and monitoring investment funds and NISA. Rakuten Card's fund-contribution reward depends on the card and the fund's distribution-fee category. For someone already using Rakuten Bank and Rakuten's shopping services, remembering one ecosystem for funding and rewards may matter more than a temporary promotion.^[15]

Mitsubishi UFJ eSmart has two visible tracks: Global Points for Mitsubishi UFJ Card contributions and Ponta Points for au PAY Card contributions. From January 2026, Ponta Points could also be used toward fund contributions paid with a Mitsubishi UFJ Card. Financial groups rename and reorganize services; focusing on which bank funds the account automatically and which point comes back is more durable than memorizing every campaign name.^[16]

Monex has strengthened d Card and Docomo connections, while PayPay Securities reduces the distance from the PayPay app to a first trade. An ecosystem is more than a few tenths of one percent. It includes payroll banking, card statements, household budgeting, authentication, and whether one's family can find the assets if help is needed.

Brands and legal entities do not line up neatly. Olive is Mitsui Sumitomo Bank's combined service, but the securities account offered from it is at SBI Securities, while SMBC Nikko is also a separate brokerage inside the SMBC group. Mitsubishi UFJ eSmart Securities changed its name from au Kabucom in February 2025 and became a wholly owned subsidiary of MUFG Bank while continuing its role in the au ecosystem. When a merger or alliance is announced, check the legal entity opening the account, the custodian of the assets, and the actual support desk—not only the logos.^[17][18]

6. Apps and call centers: measure one complete trip yourself

It is understandable that some people describe SBI's website as “legacy.” A long product history has increased both information density and the number of paths through the service. Yet visual freshness, order safety, product range, and support quality are separate dimensions. SBI reported first place in the securities category of the 2025 Japanese Customer Satisfaction Index and three stars in HDI-Japan's web-support and contact-center reviews. Conversely, a beautiful app is inconvenient if the order type or transfer function one needs is buried.^[19]

No public table was found that continuously measures major brokerages with the same question, weekday, and market conditions and reports telephone waits in seconds. Opening-season congestion, volatile markets, and NISA deadlines change the result. A company's momentary number would not produce a reproducible ranking. The latest cross-provider evidence located for this article is HDI-Japan's 2025 securities review. Three-star contact centers included SBI, Rakuten, Matsui, Nomura, SMBC Nikko, Mizuho, and Mitsubishi UFJ eSmart, among others. That is an evaluation of service quality—not a promise that every call connects in thirty seconds.^[11]

Anyone who values support should test it before moving serious money:

1. Check whether the line is open when you can actually call, such as lunch or after the market close.
2. Ask a second-level question—“Can my existing NISA holdings move?” rather than merely “Can I buy in NISA?”
3. Time the complete journey from locating the number through identity checks to a usable answer.
4. Look at chat, callback booking, and screen sharing as alternatives.

Test the app too: trace deposit, contribution change, sale, history, annual tax report, and transfer-out with little money. Avoiding an accidental sale and understanding order status matter more than feature count.

7. Foreign shares, day trading, bonds, and FX: when a specialist account makes sense

For foreign equities, compare not only security count but currency-conversion cost, yen versus foreign-currency settlement, order types, extended hours, U.S. tax handling, dividends, transferability, and NISA eligibility. Monex has long emphasized U.S.-equity research and trading. moomoo emphasizes analytics and round-the-clock trading in eligible securities. SBI and Rakuten make it easier to see NISA, funds, and Japanese shares in a broader household portfolio. A general platform can be simpler for a beginner; an active investor following earnings may justify a specialist.

For day trading, ordinary commissions can matter less than order-book data, amendment speed, stop and conditional orders, proprietary trading systems, margin rates, short-sale inventory, APIs, and incident communication. A second broker can be an operational backup, but cash and shares at Broker A do not become instantly tradable at Broker B. Unless money or capacity is prefunded on both, the backup is an empty fire extinguisher. The FSA has noted that order surges during volatile markets affected trading at several firms and treats systems risk and business continuity as supervisory priorities.^[20]

For government, corporate, and foreign bonds, compare new-issue allocations, secondary inventory, minimum size, early-sale pricing, currency risk, and issuer risk—not just a product count. A standardized Japanese retail government bond is different from a foreign bond quoted out of a dealer's inventory. A bond can be called commission-free while cost is embedded in the buy-sell price. Face-to-face firms such as Nomura and Daiwa become more relevant when a large bond allocation is part of succession and household cash-flow planning.

There is no industry-wide VIP membership card. Large firms' wealth-management and private-wealth businesses may assign advisers and specialist teams according to assets, relationship, and family or corporate complexity, coordinating investments, real estate, inheritance, and business succession. Thresholds and costs vary. A large account is not a contractual right to an IPO allocation or universally better execution. Instead of chasing prestige, ask how the adviser is paid and distinguish a salesperson's recommendation from independent advice.^[3]

Open FX, gold, silver, futures, and options accounts only after separately understanding margin, liquidation, additional collateral, hours, and asset protection. Some over-the-counter derivatives and crypto assets can fall outside Japan Investor Protection Fund coverage. A NISA contribution account should not receive extra credit for leveraged products the owner never plans to use.^[21]

8. Switching and multiple accounts: manageable, provided NISA is designed first

Changing brokers can be decomposed more easily than moving an entire banking life. Open the new general account with identity and My Number documentation, change future contributions, and transfer eligible shares or funds in taxable accounts when useful. Do not close the old account immediately. First inspect dividends, open orders, foreign currency, securities lending, margin positions, unsupported products, transfer fees, and tax documents.

NISA is different. Only one institution can receive new NISA purchases for a given year. A change request generally falls between October 1 of the previous year and September 30 of the target year, but if a purchase has already entered the old institution's NISA for that year, the institution cannot change for that year. Existing holdings in the old NISA cannot be transferred into the new institution's NISA. They normally remain tax-exempt at the old firm while new-year purchases begin at the new one.^[22]

Multiple accounts often suit people who can:

• assign long-term contributions to a primary account and U.S. shares or active trading to a specialist;
• maintain real buying capacity at two firms for disruption resilience;
• spread operational exposure for a large estate, including advice, succession procedures, and cyber incidents; and
• produce one annual list of every account, cash balance, currency, dividend, and tax document.

If the accounts become impossible to locate, one main platform is better. Japanese brokerages must segregate client assets from their own property. Properly segregated assets are in principle returned even if a brokerage fails. If segregation has failed and assets cannot be returned, the Japan Investor Protection Fund can compensate a general customer up to ¥10 million per failed member firm. This does not mean everything above ¥10 million automatically disappears, nor does it cover an investment's market loss.^[21]

Tax adds another operational cost. A designated account with withholding can settle much of the tax within each brokerage. But offsetting a loss at Broker A against a gain at Broker B, or carrying a loss forward, can require a tax return. The National Tax Agency sets out how annual reports from multiple designated accounts are combined. “Free account opening” does not make account administration free.^[23]

9. The final selection: graduate from an accidental brokerage in thirty minutes

If an account automatically buys a low-cost NISA index fund, moves money reliably, and supports strong authentication, a small point-rate difference may not justify moving. Friction can exceed several years of rewards.

If something still feels wrong, spend thirty minutes on this audit:

1. Write the primary objective in one sentence: “¥50,000 a month into a global index for twenty years,” “trade U.S. companies three times a week,” or “plan my parents' estate with an adviser.”
2. Choose only three non-negotiables from product access, app, telephone, card, bank, and order functions.
3. Calculate one real transaction's total cost, including commission, FX, spread, fund expense, card condition, and possible transfer.
4. Check the FSA registration using the legal entity and registration number, not the name in a social-media ad.^[7]
5. Test a new account with little money through deposit, purchase, contribution change, sale, withdrawal, and one support question.
6. Schedule a NISA move before buying, deciding whether it can happen this year or must wait until the next.

The practical shortlist is therefore SBI versus Rakuten for long-term accumulation, Matsui when human support weighs heavily, Nomura or Daiwa when succession advice becomes part of the job, and Monex or moomoo when U.S. equities deserve a dedicated account. If daily life is already built around MUFG and au, Docomo, or PayPay, determine whether that integration genuinely removes steps.

A brokerage account is not a marriage. Taxable accounts can coexist, and the NISA institution can change by year. More accounts are not automatically safer or smarter, either. Treat the primary account as the main line carrying household wealth and each specialist account as a branch with a named purpose. Then “which company is biggest?” becomes the much more useful question: “How should my assets run?”

Disclaimer: This article is a general comparison based on public information available on September 4, 2026. It does not solicit a contract with any brokerage or a purchase of any financial instrument. Fees, points, product availability, tax rules, and support hours change. Principal is not guaranteed, and foreign shares, bonds, FX, and derivatives involve market, currency, credit, liquidity, and leverage risks. Before contracting, check the provider's current pre-contract documents, fee schedule, and FSA registration, and consult an independent tax, legal, or financial professional when appropriate.

References

1. [1]SBI Holdings, “SBI Securities Assets Under Custody Exceed ¥70 Trillion”. Reports April 2026 assets, the group's 16-million account milestone, and product and point initiatives. ↩
2. [2]Rakuten Securities, “FY2026 Operating Data” and “Rakuten Securities by the Numbers”. Defines monthly assets and reports 14 million accounts in April 2026. ↩
3. [3]Nomura Holdings, “Wealth Management”. Describes client assets, branches, customer types, bonds, and succession services. ↩
4. [4]Matsui Securities, “Customer-Oriented Business Conduct”. Reports March 2026 account and client-asset totals. ↩
5. [5]Monex Securities, “Securities accounts exceed three million”. Official July 15, 2026 announcement. ↩
6. [6]Mitsubishi UFJ eSmart Securities, “Monthly Accounts and Execution Data”. Publishes monthly securities-account and client-asset data. ↩
7. [7]Financial Services Agency, “Lists of Licensed and Registered Financial Institutions”. The authoritative starting point for a firm's legal name, registration, and authorized business. ↩
8. [8]Financial Services Agency, policy evaluation of financial-market competitiveness and Ministry of Finance, Financial System Reform. Covers registration, commission liberalization, entry, and service competition. ↩
9. [9]Financial Services Agency, research report on financial-institution failures. Examines Yamaichi's off-balance-sheet liabilities, postponed losses, and governance failure. ↩
10. [10]Japan Post Bank, “Investment Trusts”. Explains post offices' role as financial-products intermediaries. ↩
11. [11]HDI-Japan, “2025 Securities Industry Web Support and Contact Center Ratings”. A common-method comparison of twelve providers. ↩
12. [12]Matsui Securities, “For First-Time Customers”. Describes telephone and chat support, external ratings, and trading environment. ↩
13. [13]PayPay Securities, “NISA Features”. Explains small-amount Japanese equity, U.S. equity, and fund purchases. ↩
14. [14]moomoo Securities, “Pricing” and “U.S. Extended-Hours Trading”. States commissions, FX terms, and eligibility conditions. ↩
15. [15]Rakuten Securities, iGrow one-million-download release and Rakuten Card fund-contribution reward rates. Explains app roles and the conditions updated in August 2026. ↩
16. [16]Mitsubishi UFJ eSmart Securities, “Expansion of Point Investing”. Describes Ponta use with Mitsubishi UFJ Card-funded contributions. ↩
17. [17]Sumitomo Mitsui Banking Corporation, “Olive”. Describes opening an SBI Securities account from Olive and the V Point connection. ↩
18. [18]Mitsubishi UFJ eSmart Securities, announcement of the au Kabucom name change. Covers MUFG Bank ownership, the new name, and continuation in the au ecosystem. ↩
19. [19]SBI Securities, “Customer-Oriented Business Conduct”. Lists its 2025 JCSI and HDI-Japan results. ↩
20. [20]FSA, “Comprehensive Guidelines for Supervision of Financial Instruments Business Operators” and 2021 Strategic Priorities. Covers business continuity, order-surge incidents, and systems-risk supervision. ↩
21. [21]Japan Investor Protection Fund, “Q&A”. Explains segregation, return of assets, the ¥10 million cap, and excluded losses. ↩
22. [22]FSA, “NISA Frequently Asked Questions” and National Tax Agency, “Opening or Changing a NISA Account”. Covers annual institution changes, purchase timing, and identity documentation. ↩
23. [23]National Tax Agency, “Dividends and Listed Shares in a Designated Account”. Explains when cross-account loss offsets require filing. ↩