Rakuten Securities’ funding-cost drag widened even as operating profit nearly doubled

Rakuten Securities nearly doubled operating profit in the first nine months of 2026 even as its financial-expense burden grew substantially faster than gross operating revenue. Operating revenue rose 47.7% to ¥165.978 billion. Financial expenses rose 122.6% to ¥17.751 billion. After that deduction, net operating revenue rose 42.0% to ¥148.226 billion. The company then converted that net revenue into ¥55.093 billion of operating income, an 86.6% increase. The result is not a simple story of lower funding pressure or uniformly improving line items. It is a story in which a larger financing drag was more than offset by stronger revenue and operating leverage elsewhere in the income statement.[1][2]

The gross-to-net bridge quantifies that tension. Financial expenses were 10.69% of operating revenue in 2026, compared with 7.10% in the prior-year period. Gross-to-net revenue retention therefore fell from 92.90% to 89.30%, a decline of 3.60 percentage points. Yet operating income as a share of net operating revenue increased from 28.29% to 37.17%, an improvement of 8.88 percentage points. Rakuten Securities lost ground at the financial-expense stage and gained more ground after it. That sequencing is the central finding because it separates funding-side economics from the subsequent cost and revenue conversion.[1][2]

The nine-month bridge

The revenue composition explains part of the gross increase. Commission received rose from ¥36.498 billion to ¥51.358 billion. Net trading income increased from ¥24.295 billion to ¥32.089 billion. Financial revenue rose from ¥45.266 billion to ¥74.343 billion, an increase of about 64.2%, and other operating revenue rose from ¥6.278 billion to ¥8.168 billion. Financial revenue was the largest contributor among the disclosed categories, and the simultaneous increase in financial expenses is therefore economically coherent: a business earning more from financing-related assets can also incur more funding expense. The accounts do not allow the two lines to be netted mentally without preserving their separate scales.[1][2]

The important comparison is not that financial expense grew more than financial revenue in percentage terms. Percentage growth from a smaller base can be misleading. Financial revenue increased by ¥29.077 billion in absolute terms, while financial expense increased by ¥9.775 billion. The net contribution of those two lines therefore improved by roughly ¥19.302 billion before considering other revenue and costs. That arithmetic prevents a dramatic but wrong conclusion that the 122.6% expense increase overwhelmed the financing economics. It did not. It reduced gross-to-net retention, but the absolute revenue gain remained much larger.[1]

Operating leverage arrived after the funding line

General and administrative expenses rose 24.4%, materially slower than the 42.0% increase in net operating revenue. Trading-related expenses, the largest administrative category, rose from ¥44.099 billion to ¥58.082 billion, about 31.7%. Personnel expenses rose only 2.3%, while office expenses and depreciation increased more quickly. Because the cost base expanded more slowly than net revenue, operating income grew almost twice as fast as net operating revenue. The improvement is visible in the 37.17% operating margin on net operating revenue, up from 28.29%.[1]

That margin improvement should not be confused with a universal cost reduction. Total administrative expenses increased by ¥18.291 billion. The company was spending more in absolute terms, and several categories rose sharply. The leverage came from revenue expanding faster than those expenses, not from a shrinking operating platform. This distinction matters when evaluating durability: a margin created by scale can persist if revenue remains high and the cost base is semi-fixed; it can reverse if market activity or financing spreads normalise while expenses remain elevated.[1]

What the financial-expense line does not establish

Rakuten’s disclosure does not identify the entire ¥17.751 billion as interest paid on one instrument or one source of funding. Securities-company financial expenses can reflect funding for margin lending, securities financing, collateral arrangements and other balance-sheet activities. The line is not a measure of customer losses and does not, by itself, indicate liquidity stress. A rigorous explanation would require average interest-bearing liabilities, average rates, currency mix, collateral terms and the assets generating the corresponding financial revenue. The present report provides the income-statement outcome but not that full balance-sheet yield bridge.[1][2]

The accounting boundary also requires care. Rakuten Securities’ report is prepared under Japanese GAAP and follows the uniform accounting standards for securities companies. Rakuten Group reports consolidated results under IFRS and expressly warns that transactions may be recognised differently. The subsidiary’s ¥28.581 billion net income should therefore not be inserted unchanged into an IFRS model of the parent without consolidation adjustments, ownership considerations and accounting-policy differences. This investigation concerns the securities subsidiary’s disclosed J-GAAP bridge, not the parent group’s eventual IFRS contribution.[1][2]

An extraordinary-loss denominator tempers the bottom line

Net income attributable to owners rose 99.1%, almost matching a doubling, but the path below operating income includes material extraordinary losses. Those losses increased from ¥6.777 billion to ¥9.545 billion. Income before tax was ¥45.894 billion and total income taxes were ¥17.312 billion. The bottom-line improvement is still substantial, but focusing only on the near-100% growth rate would miss the fact that extraordinary losses absorbed part of the operating gain. Future comparability depends on whether those items recur and how they are described in the attachment.[1]

The same denominator discipline applies to the company’s strong commission and trading lines. Brokerage commission rose from ¥18.066 billion to ¥24.221 billion, while fees for offerings and distributions rose from ¥2.157 billion to ¥3.615 billion. These categories have different drivers and risk characteristics. Aggregating them into one ‘commission boom’ can obscure whether growth came from retail trading, capital-markets activity, asset-based services or other commissions. The disclosure provides enough detail to show diversification, but not enough to calculate a uniform take rate without transaction and asset denominators.[1]

What would test the durability of the result

The next decisive evidence would be an average-balance and yield bridge for financial revenue and expense. It should show average margin-loan and securities-financing assets, average funding liabilities, realised yields, currency effects and any change in collateral composition. That would reveal whether the 3.60-percentage-point decline in gross-to-net retention arose from higher funding rates, faster balance-sheet growth, a product mix change or temporary positioning. A similar bridge for trading-related expenses would show how much of the 31.7% increase was variable with activity.[1][2]

The evidence presently supports a balanced conclusion. Rakuten Securities’ financing drag became materially heavier relative to operating revenue, with financial expenses more than doubling and gross-to-net retention falling to 89.30%. At the same time, absolute financial revenue growth exceeded the expense increase, net operating revenue rose 42.0%, administrative expenses rose only 24.4%, and operating profit increased 86.6%. The company did not improve because every line became more favourable. It improved because revenue scale and post-funding operating leverage outweighed a worsening expense ratio.[1][2]

That is a more useful finding than either extreme. The 122.6% expense increase is not evidence that financing economics collapsed, and the 86.6% operating-profit increase is not evidence that funding costs ceased to matter. Both occurred simultaneously. A future period in which financial expenses continue to outpace revenue while operating leverage weakens would change the assessment. For the nine months to September 2026, however, the disclosed bridge shows a securities business absorbing a larger funding burden and still converting the remaining revenue much more efficiently.[1][2]

The missing denominator is average interest-bearing funding. Without it, the 122.6% increase in financial expense cannot be separated cleanly into more borrowing, higher rates, currency effects or a change in the instruments used. Nor can the expense be assigned entirely to customer margin lending or one subsidiary. The disclosed bridge nevertheless identifies an important operating constraint: gross revenue and profit were strong enough to absorb a rapidly rising funding line in this period. A future margin analysis should pair average funded assets, customer credit balances, effective funding cost and net interest spread so that growth in activity is not mistaken for cost-free operating leverage.[1][2][3]

It would also show whether the enlarged expense line was mainly a price-of-funding effect or the predictable consequence of carrying a larger balance sheet.[1][2][3]

That distinction is essential before describing the increase as margin compression or as evidence of a more leveraged operating model.[1][2][3]

That remains the key unresolved test.[1][2][3]

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