Morgan Stanley's third quarter: costs kept pace with revenue and the Wealth interest-income guide was missed

The record flows are two lumps and a base

Morgan Stanley's Wealth unit took in $232 billion of net new client assets in the September 2026 quarter. The company called it a record, and its release says just over half was tied to IPOs. Of its fee-based flows, the chief financial officer said "nearly half" came from one corporate-retirement mandate.

Take the mandate out, and by our arithmetic fee flows were about what they were a year ago. Stock-plan IPO money was also just over half of the total in July. Asked about the tail, the CFO said there was nothing material to call out on expectations and that flows will ebb and flow. The headline is the lump. The base underneath looks like last year's.

Costs kept pace with revenue

The CFO cited a year-to-date efficiency ratio (costs as a share of revenue) of 66% and said strong revenue had driven operating leverage. Over nine months that holds. Last quarter alone, costs were 67.4% of revenue by our arithmetic.

Revenue and costs each rose at nearly the same pace on a year ago. Pre-tax income rose 7%, or about 10% before the $148 million credit-loss provision (nil a year ago), by our arithmetic. Costs outside pay rose 20% while pay rose 7% as reported; the year-ago pay and revenue include deferred-compensation items that the company stopped adjusting for this year, so that figure flatters. Against the year-ago figures excluding those items, pay rose about 12% and revenue about 13%, by our arithmetic. In Wealth the pre-tax margin was 30.4%, against 30.3% a year ago. The CFO said the margin "will expand over time with scale", and that it is not managed quarter by quarter; across the five quarters through last quarter it stayed within about a point as reported, so it has not moved much since, but the claim is about the long run.

The balance sheet grew faster than the capital under it

Leverage exposure, the denominator of the leverage ratio, grew about 23% on the year by our arithmetic, while the Tier 1 capital in the ratio grew about 8.5%, which is why the ratio fell. The supplementary leverage ratio ended at 4.8%, lower than a year ago. The CEO named SLR as another way to measure usage, then said the firm likes the capital buffer: "there are other ways to measure usage SLR and the like, but we like the capital buffer".

A July guide on interest income was missed

In July the company guided Wealth interest income to a modest rise for the next quarter. It came in lower, which the CFO called down modestly, though deposits grew and the mix shifted.

Of the four interest-income guides given in the past year, each measured against the next quarter's result, the first three were followed by a rise or no fall (the January guide of 'roughly flat' was followed by a small rise), and the July guide of a modest increase is the one followed by a fall. That is one miss in four, not yet a pattern. The CFO described the deposit build as intentional. She said its funding benefit would come through next year, and separately that interest income should expand next year, largely on loan growth; for the fourth quarter she guided another modest rise.

What would have to be true, and what we do not know

The company's account of the quarter holds if IPO and retirement money stays as fee assets at steady retention, the deposit build lowers funding costs next year, and volumes hold after September, when the CEO said Asian volumes thinned. Equity underwriting fell 38% from the quarter before and 19% on a year ago by our arithmetic; the release gives lower IPOs and blocks as the reason for the yearly fall. Separately, in reply to a TD Cowen question, management said private-equity sponsors are not leading the deal cycle.

We do not know yet whether the Wealth margin goal or the return goal will be raised; in July the CEO said margin hurdles would be addressed at the end of the year.

The remarks leaned on the windows that flatter: flows over several years, efficiency over nine months, a run of quarters above 20%, which the CEO counted as five. Each is true; the quarter alone, which the release prints beside them, says less on costs and on interest income.