The U.S. stock market is sending two very different signals.
The Nasdaq gained about 0.7% last week, helped by strength in AI, semiconductor and crypto-linked stocks. At the same time, the Dow Jones and Russell 2000 fell to roughly three-month lows, while the S&P 500 finished slightly lower.
That divergence suggests investors are not simply betting that the entire economy is getting stronger.
They appear to be paying a premium for a relatively narrow group of companies expected to keep delivering growth even while borrowing costs remain high.
The biggest macro pressure is still interest rates. The Federal Reserve raised its benchmark rate by 25 basis points to 3.75%-4.00% on Sept. 16, its first increase since 2023, reinforcing expectations that monetary policy may stay restrictive.
AI Is Still Winning the Valuation Battle
The clearest winners remain growth companies tied to AI.
AMD rose roughly 8.5% for the week, while Sandisk jumped sharply and several software and semiconductor names regained momentum.
That does not mean higher rates are good for technology stocks. Normally, rising Treasury yields put pressure on high-growth valuations because more of those companies’ expected profits sit further in the future.
We previously explained why higher Treasury yields can hit AI and tech stocks particularly hard.
But investors are currently making a distinction: companies with visible AI revenue growth are still being rewarded, while more cyclical parts of the market are struggling.
| Market signal | What it suggests |
|---|---|
| Nasdaq outperforming | Confidence in AI and large-cap growth |
| Dow weakening | Pressure on older, cyclical businesses |
| Russell 2000 weakening | Higher rates hurting smaller companies |
| 10-year yield near 5% | Borrowing costs remain restrictive |
| Oil near $100 | Inflation risk has not disappeared |
High Yields Are Hurting the Rest of the Market
The bigger warning is market breadth.
The 10-year Treasury yield remains close to 5%, while oil is hovering around $100 a barrel. Both conditions can make life harder for companies that rely heavily on financing or consumer demand.
Smaller companies are particularly exposed because they generally borrow at higher rates and have less pricing power than megacap technology firms.
That helps explain why the Russell 2000 can fall while AI stocks rise.
Coinpaper recently covered the same split when the S&P 500 and Nasdaq rebounded as oil fell, showing how quickly easing energy pressure can benefit growth stocks.
