American Express heads into its third-quarter report with an awkward split. Management sounded more confident three months ago than it has in years, lifting its revenue outlook and saying it could afford to spend more on growth than planned. The stock has fallen 5.9% since then, while the S&P 500 gained 4.2%. Either the market is doubting that confidence, or it is overlooking a business that keeps compounding. The October 23 release, due before the open, should help show which.

Wall Street expects earnings of $4.47 per share on revenue of $20.13 billion. That works out to about 8% earnings growth and 9.3% revenue growth from a year ago. The Earnings Whisper of $4.55 sits modestly above consensus, so the informal bar is a bit higher than the published one, though not dramatically. Consensus is also slightly below last quarter's $4.53, which partly reflects the timing of marketing spend and reserve movements. For the full year, management kept its earnings range at $17.30 to $17.90 and raised its revenue growth target to about 10%. The Street's $17.67 estimate sits in the upper half of that range, and its revenue forecast lines up with the higher growth target. Expectations look demanding but not stretched beyond what the company has said.

The main test is whether the spending surge management described can absorb a known drag. Last quarter, U.S. consumer billings grew 11%, which management called the fastest pace since early 2018 outside the pandemic rebound. Net card fees rose 15.4%, and the company expects that growth to reach the high teens by year-end as the refreshed Platinum card gains traction. Small business and commercial spending improved to 5%. This quarter, though, the Amazon co-brand portfolio left the books, following the Lowe's transfer in the second quarter. Management has framed these sales as neutral to pretax income but has warned they will cut roughly 1 point from total revenue growth and about 2.5 points from net interest income growth by the fourth quarter. A revenue figure near 9% with healthy billings and card fee growth would support the story. A sharper slowdown in spending or fees would suggest the second quarter was a high-water mark.

Costs are the second swing factor. Management nudged its expected ratio of variable customer engagement expenses to revenue up to 44% to 45%, because members were spending heavily in reward-rich categories such as airlines. That is a cost of success, but it squeezes margins. Readers should also check whether the extra investment management promised, including the planned acquisition of The Fork, technology spending and customer acquisition, leaves the earnings range intact. Credit has been a quiet tailwind, with falling delinquencies and a $191 million reserve release last quarter. Another release would help earnings, while a return to reserve building would raise questions about earnings quality even if card members remain healthy.

Investor mood has improved only slightly, with sentiment edging up to 7.2% bullish from 5.3% before the last report. The stock has not followed. At about $307, shares sit well below their 200-day moving average of $329.60 and within roughly 3% of the post-earnings low of $297.20. The decline from a high above $350 has reset valuation, so steady numbers may count for more than usual.

In the end, the report hinges on whether premium card spending and fee growth stay strong enough to offset the co-brand drag and higher reward costs. If they do, management's choice to reinvest rather than raise earnings guidance looks like strength. If they do not, the market's skepticism may prove justified.