To The Moon

September brought a sharp divergence across U.S. equities. Technology stocks remained resilient, while the broader market came under pressure from rising Treasury yields, elevated oil prices and uncertainty over the Federal Reserve’s next move.

The $NASDAQ(.IXIC)$ Nasdaq Composite gained 1.86% in September, while the $S&P 500(.SPX)$ fell about 0.45% and the $Dow Jones(.DJI)$ Industrial Average dropped 4.29%. Despite the monthly pullback, the market entered October after another positive quarter for the S&P 500 and Nasdaq.

📊 September by the Numbers

The broader Q3 picture is important: the S&P 500 and Nasdaq both finished the quarter higher, while the Dow and small-cap stocks lagged. Major benchmarks had also reached record levels earlier in the quarter, making September's weakness look more like a pullback after a rally than a broad market reversal.

The Dow's larger decline can partly be explained by its construction: unlike the market-cap-weighted S&P 500, the Dow is price-weighted, meaning stocks with higher share prices have a greater influence on the index.

🧩 1. Sector Rotation: Technology Stood Out

September's weakness was much broader than the headline $S&P 500(.SPX)$ decline suggests.

Only two of the 11 S&P 500 sectors posted positive returns: Technology and Communication Services. Technology gained about 5%, while Communication Services edged higher by roughly 0.2%. Most other sectors declined, with several falling more than 5%.

That created a striking gap between market-cap-weighted indexes and the average stock. About 78% of S&P 500 constituents declined during September, even as the Nasdaq gained.

The message was clear: large-cap technology and AI-related stocks continued to provide much of the market's support, while breadth weakened underneath the surface.

🤖 2. Why Did September Look Like This?

A. AI remained a major source of strength

AI investment continued to support technology and semiconductor stocks.

The Q3 rally was helped by strong performances from major technology companies, while continued investment in AI infrastructure kept investors focused on the earnings potential of the sector. Reuters also noted that revised Q2 GDP growth of 2.2% was supported by consumer spending and AI infrastructure investment.

The semiconductor sector was particularly notable. The $Philadelphia Semiconductor Index(SOX)$ gained roughly 10% in September, according to market data through month-end.

That makes semiconductors an important area to watch as October begins.

B. Treasury yields became a major headwind

Long-term Treasury yields rose sharply during September.

The 30-year Treasury yield moved above 5.6%, reaching its highest level since 2002, while the 10-year yield approached 5.3%.

Higher long-term yields can pressure equity valuations by increasing the discount rate applied to future earnings. They can also raise borrowing costs across the economy.

The effect is increasingly visible for consumers as well: higher Treasury yields have pushed mortgage rates higher, adding another channel through which tighter financial conditions can affect the economy.

C. Oil added another inflation risk

Oil prices remained elevated amid the ongoing U.S.-Iran conflict and strained negotiations, adding another potential source of inflation pressure. Brent crude gained roughly 14% in September, according to Reuters.

Higher energy prices matter for markets because they can feed into headline inflation and complicate expectations for future Fed policy.

🔭 October: What Will Wall Street Watch?

September ended with a more complicated macro picture: inflation showed signs of cooling, but long-term yields and oil prices remained elevated.

That leaves several key variables for October.

🏦 1. Inflation & the Federal Reserve

The latest PCE report provided some relief on underlying inflation.

The core PCE price index rose 3.0% year over year in August, down from 3.3% in July and below the market expectation of around 3.3%. The headline PCE price index rose 3.4%.

Core PCE is closely watched by the Federal Reserve because it excludes volatile food and energy prices and is used to assess underlying inflation trends.

However, inflation remains above the Fed's 2% target, while higher oil prices could put renewed pressure on headline inflation.

The next FOMC meeting is scheduled for October 27–28.

📅 2. Key October Data

The first weeks of October will bring several important economic releases:

• Oct. 2: September Employment Situation / jobs report

• Oct. 14: September CPI

• Oct. 15: September PPI

• Oct. 27–28: FOMC meeting

The jobs report and inflation data could influence expectations for the Fed's next moves.

💻 3. Semiconductor & AI Earnings

For technology investors, semiconductors will be a particularly important area to watch.

Micron's latest results, released on September 30, provide an immediate read on AI-related memory demand.

Meanwhile, TSMC will report its Q3 2026 results on October 15, giving investors another important data point on global semiconductor and AI infrastructure demand.

The semiconductor sector's strong September performance means October earnings will face an important test: can underlying AI demand continue to support elevated expectations?

🏦 4. Q3 Earnings Season Begins

October will also bring the first major wave of Q3 earnings.

The U.S. banking sector gets an early start, with:

• $JPMorgan Chase(JPM)$ — Oct. 13

• $Wells Fargo(WFC)$ — Oct. 13

• $Bank of America(BAC)$ — Oct. 14

Their results will provide an early look at corporate demand, credit conditions and the health of the U.S. consumer and financial system.

📌 Key Takeaway

September showed two very different markets at once.

On the surface:
The S&P 500 and Nasdaq remained relatively resilient.

Underneath:
Market breadth weakened, the Dow and small caps lagged, and long-term Treasury yields surged.

For October, the market faces a tug-of-war between:

🟢 Growth & AI
Strong technology performance, semiconductor demand and continued AI infrastructure investment

🔴 Macro pressure
Elevated Treasury yields, oil prices, inflation and uncertainty over Fed policy

The key question heading into Q4 is whether earnings and AI investment can continue to support equities while the cost of capital remains elevated.

💬 Your Turn: Join the Discussion

What will you be watching most closely in October — Fed policy, earnings, Treasury yields, or AI?

Share your thoughts below. Useful comments may receive Tiger Coins! 🪙

Markets are always moving - and sometimes, the best move is knowing what works for you.

With Treasury yields, oil prices and rate expectations keeping markets on edge this week, investors are once again thinking carefully about where to position next. There’s no one-size-fits-all choice in investing — and the same goes for Tiger Merch. This month’s hot picks are in, featuring the Tiger Toiletry Bag, Universal Travel Adapter, Tiger Umbrella and more favourites chosen by fellow Tigers.

Explore the Monthly Hot Picks in Tiger Coin Mall, now 12% OFF for a limited time.

https://laohu8.com/J/redeemGift?goodID=100561&type=delivery