AI Leadership Overpowers a 5% Treasury Yield, but Small Caps Still Refuse to Confirm

The S&P 500 closed Friday at 7,743.41, gaining +1.2% for the week, while the Nasdaq Composite finished at 27,068.72 and led with a +2.1% advance. The Dow Jones Industrial Average closed at 51,828.62, up a more modest +0.3%, while the Russell 2000 fell -0.8% to 2,837.55. That divergence matters: investors were willing to own large companies with strong earnings and AI exposure even as smaller, more rate-sensitive businesses struggled. This was a winning week for the headline market, but not a broad risk-on move.

The 10-year Treasury yield finished around 5.17%, up roughly 16 basis points from 5.01% the previous Friday, as markets continued digesting the Federal Reserve's September rate hike and the possibility of additional tightening. Higher long-term yields normally create a tougher valuation environment for growth stocks, yet technology and communication services remained among the week's strongest areas. September's preliminary S&P Global U.S. Composite PMI also rose to 58.4 from 58.0 in August, its highest reading in more than five years, reinforcing the message that economic activity remains resilient. The market is essentially balancing two competing forces: stronger growth and AI investment are supporting earnings expectations, while that same resilience is making it harder for interest rates to come down.

WTI crude settled Friday at $92.29 per barrel, down about -8.0% from the prior Friday's $100.30 settlement as hopes for progress between the U.S. and Iran reduced some of the geopolitical risk premium in energy markets. Gold futures closed at $4,326.20 per ounce, down roughly -1.4% from the previous Friday as rising Treasury yields increased the opportunity cost of holding a non-yielding asset. Energy stocks consequently lagged even as the broader market advanced. Falling oil helped remove one inflation pressure from equities, but the bond market made clear that investors are not ready to declare the inflation-and-rates problem finished.

The week's biggest equity moves were concentrated around AI rather than spread evenly across the economy. AMD gained roughly +15.0% from Friday to Friday and crossed $1 trillion in market capitalization, while Intel rose about +16.0% and Meta advanced approximately +13.0% as enthusiasm around its Muse AI ecosystem accelerated. Akamai gained +9.0% after expanding its relationship with Anthropic through an agreement carrying $11.6 billion in contractual commitments over seven years. Those moves help explain why the Nasdaq could gain +2.1% while the Russell 2000 lost -0.8%: investors were rewarding specific businesses tied to AI demand rather than indiscriminately buying risk.

A disciplined long-term investor does not need to fight a market simply because the 10-year Treasury yield is above 5%, but this week's leadership should not be mistaken for universal strength. The S&P 500 and Nasdaq moved higher while the Russell 2000 moved lower, telling us that company quality, earnings power, balance sheets, and exposure to durable investment themes still matter heavily. Watch whether small caps and other rate-sensitive areas begin participating if yields stabilize; broader participation would make the market's advance healthier. Until then, stay focused on quality businesses, avoid chasing stocks simply because AI is attached to the story, and let valuation and your predetermined entry points determine where new capital goes.