Combined equity-trading revenue across the largest Wall Street institutions could approach $19 billion for the quarter, according to projections compiled ahead of next week's earnings disclosures. As capital markets cool, a divergence is taking shape among banks, with some institutions recording stronger results than others.

Through the first half of the year, trading activity across equity and fixed-income operations kept the five largest US banks clustered at broadly comparable revenue levels. Wells Fargo & Co. analyst Mike Mayo characterised that pattern as one of widely distributed gains, though he added that a wider performance gap between top and bottom performers now looks likely heading into the current period.

Goldman Sachs Group Inc., due to publish its quarterly figures on Tuesday, carries analyst consensus estimates — drawn from projections compiled through Thursday's New York market close — pointing to stock-trading revenue of $5.1 billion, while Morgan Stanley's equivalent figure sits at $4.9 billion. Trading-desk projections place JPMorgan Chase & Co.'s equity revenue at roughly $4.5 billion, while Bank of America Corp.'s stock-trading unit is expected to bring in around $2.6 billion, according to analyst estimates.

Strain is building across a number of other ventures. Fixed-income units at five of the world's largest banks are headed toward their softest revenue stretch of the year, as persistently high borrowing costs weigh on returns throughout their bond-trading operations. Higher borrowing costs carry the potential to inject greater uncertainty into the asset and liability positions banks carry on their books.

Investor concern that AI-driven tools could redirect consumer deposits away from traditional banks has weighed on certain equities. Across the third quarter, the banking index posted its steepest three-month decline since early 2023 — a period when a string of regional bank collapses had destabilised the sector. Morgan Stanley analyst Manan Gosalia pointed to three converging pressures on investor confidence: softer capital markets revenue, climbing funding costs, and the growing adoption of AI-powered cash optimisation tools cutting into fee streams.

Combined fixed-income trading desks at five of Wall Street's largest banks look set to bring in upwards of $19 billion for the quarter, a pull-back from the $21 billion-plus those same units recorded three months earlier. Shares of Bank of America fell notably in mid-September after Chief Executive Brian Moynihan indicated that fixed-income trading revenue was on track to come in lower during the third quarter.

Goldman's David Solomon had flagged at the time that fixed-income trading was running below equity activity, which he described as holding up strongly. A research note from Bank of America analyst Ebrahim Poonawala projects that capital-markets volumes across the back half of 2026 will fall noticeably short of first-half levels, raising questions about how long the current cycle can sustain its pace.

Elevated interest rates are pushing lenders to grapple with volatility in the worth of portfolio assets they carry on their books. Channelled through a line on the firm's books known as accumulated other comprehensive income, those fluctuations can register as unrealised losses that introduce volatility into reported earnings figures.

Debt underwriting retains a degree of support from the pipeline of companies scheduled to refinance in the coming years, though Mayo noted that a sustained rise in interest rates could weigh on bond demand. Merger and acquisition activity pointed toward a softer third quarter, with the total value of deals announced in the three months through September running about 10% below the same period a year prior, according to figures compiled by a news outlet.

Among the market segments tracked this calendar year, IPO activity stood out as a comparatively resilient performer. SpaceX completed its stock market debut that June, with the flotation drawing attention for the scale of its valuation at the time of listing. Anthropic PBC is set to hold talks with potential backers in the coming days as it moves toward a public listing, according to reports from a television news outlet.

Plans for a public stock offering at Oura Inc. were shelved during the autumn period. Bamboo Insurance Services Inc., which counts CVC Capital Partners among its backers, also pushed back its planned market debut. Dimon told a television interviewer on Tuesday that deal-making and listing activity in Europe looked healthy but that the United States was likely to see some softening in September — a period when analysts project JPMorgan's investment-banking fee revenue to rise roughly 15% year over year, compared with an anticipated 8.1% gain at Goldman Sachs and 1.9% at Morgan Stanley.

Quarterly results covering September gave broader markets an early window into Wall Street's performance, with Jefferies Financial Group Inc. reporting that its investment banking division and equity-trading desk each turned in their highest-output period since the firm's founding. Fixed-income trading brought net revenue down by 26% over the reporting window.

Morgan Stanley analyst Gosalia put the broader AI buildout in longer-term context, noting that the investment cycle behind artificial intelligence stretched across multiple years and extended well beyond the largest cloud providers — a dynamic that, in that view, stood to benefit capital markets over an extended horizon.