Warsh Draws the Line at Jackson Hole

The week's defining economic moment came Friday morning in Wyoming, where Chair Warsh delivered his first keynote address at the Fed's annual symposium. His message was direct: inflation remains too high, and restoring price stability will be the central bank's predominant focus. Markets heard a chairman leaning toward action. The probability of a September rate hike jumped to roughly 57% per the CME FedWatch Tool, up sharply from about 30% a week earlier, and short-term Treasury yields rose several basis points. Stocks reversed an early rally, with the S&P 500 slipping 0.3% on Friday, though all three major indexes held weekly gains.

The bond market's fuller reaction was more nuanced than the headline. Even as short-term yields climbed on hike expectations, longer-term Treasuries gained about 1.0% for the week, a sign that investors read credibility on inflation into the message rather than panic. A Fed willing to act against price pressure is, for the owner of a 20-year bond, better news than one that hesitates. The flattening move partially reversed the prior week's stress at the long end, when the Treasury Department's expanded buyback program bought only a day of relief.

The data beneath the speech described an economy slowing but not stalling. The second estimate of second-quarter GDP confirmed growth at a 1.5% annual rate, down from 2.1% in the first quarter, though sales to private domestic buyers were revised up to a healthy 4.2% pace. Weekly jobless claims stayed low at 203,000. The rate-sensitive corners are showing the strain: sales of newly built homes fell 10.5% in July to an annual rate of 607,000, down 6.3% from a year earlier. With the average 30-year fixed mortgage at 6.66% in Freddie Mac's latest weekly survey, borrowing costs at these levels are a direct weight on big-ticket demand, while the price index for gross domestic purchases ran at 5.8%.

Nvidia Answers the Question

The report the entire season pointed toward arrived Wednesday evening, and it delivered. Nvidia earned $2.22 per share on revenue of $96.2 billion for its quarter ended in July, beating estimates on both lines, and projected revenue growth of roughly 70% for its fiscal 2028, well above what analysts had modeled. The stock jumped 8.7% on Thursday and pulled the chip complex with it, with Broadcom gaining 4.5% and Intel 4.4%. For a market that has spent the summer asking whether AI infrastructure spending justifies the expectations built into index leadership, the answer was emphatic enough to quiet the question for another quarter.

Thursday added a second exclamation point. Salesforce surged 22.6% after reporting earnings of $5.90 per share against estimates near $3.27, one of the year's larger beats among major software companies, evidence that AI-driven demand is broadening beyond the chipmakers into the application layer. Friday supplied the counterweight: PayPal slumped 16% in premarket trading after Advent International and Stripe abandoned their pursuit of the company, a reminder that deal speculation can unwind as quickly as it builds.

With the season effectively closed, the scorecard shows second-quarter earnings growth running at its fastest pace since 2021, powered disproportionately by AI-linked spending. The tension heading into fall is no longer whether the results are strong. It is that a market grading against these expectations, with a Fed chair openly weighing a hike, has little margin for the first genuine disappointment.

Economic Outcast, Then Escalation

The Rally That Narrowed to a Point

The index-level scoreboard says stocks had a good week. The rows beneath it tell a different story. While the S&P 500 rose 0.5%, small caps fell 1.5%, mid-cap growth dropped 2.0%, and real estate lost 1.2%. Strip out the Nvidia-led surge in the largest technology names and much of the market spent the week declining. That divergence, megacap strength masking broad weakness, received far less attention than the headline gains, and it matters more than usual right now.

The reason is timing. Leadership this narrow leaves the index dependent on a handful of stocks priced for sustained perfection, at the exact moment two other pressures arrive. September has historically been the market's softest month, and the Fed chair just put a September hike squarely on the table. Smaller companies, which borrow at floating rates and refinance more often, are the first to feel higher-for-longer rates, which is precisely what their underperformance this week signaled.

Why it could move markets: narrow rallies are stable until the leaders wobble, and then they have little beneath them. None of this predicts a decline; concentrated leadership persisted far longer than skeptics expected throughout this cycle. But for investors, the gap between what the index did this week and what the average stock did is the kind of quiet divergence worth knowing about before September tests it.

Megacaps Up, the Middle Down, Hedges Mixed

The table shows the narrowing plainly: large-cap gains against declines across small caps, mid caps, and real estate. Fixed income firmed at the long end even as hike odds rose, with the 20+ year Treasury index up 1.0%. The prior week's hedges cooled unevenly: gold gave back 3.4% as the dollar rebounded 1.0%, while Bitcoin extended its rally with a 9.9% gain to finish near $80,268.

Bitcoin weekly return from Bloomberg closing levels of $80,268.37 on August 28, 2026 and $73,020.95 on August 21, 2026. Bitcoin year-to-date return calculated by Vistamark from the August 28, 2026 close and the January 1, 2026 reference price of $88,722. All other figures are total returns through the August 28, 2026 close.

An Escalation to Price, Then the Jobs Report

The week opens with markets reacting to the weekend's military exchange and closes with the single data point most likely to decide September: the August employment report. In between, the manufacturing and services surveys offer the first broad read on activity for the new month, in a month that has historically been the market's softest stretch of the year.