‘Main Street’ Rebounds as AI Pauses
Airlines, banks, retailers and metals are coming to life as AI megacaps pause.
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Bears tried to hit the stock market in August, but were driven off by good news about the economy and earnings.
The S&P 500 began last month with a sharp selloff, initially falling more than 9 percent below its July close. But sellers quickly evaporated and the index ended the month up 1.2 percent. By some measures, it was one of the most volatile periods of all time. (See below for more.)
Technical forces seemed to explain the move: The index broke a trendline and the Japanese yen rallied. Investors also took profits in megacaps amid a lull in news.
Some pundits tried to link the selloff to a weaker economy, but then retail sales shot past expectations. Jobless claims stopped rising and the government revised second-quarter gross domestic product higher. Recession talk faded.
Perhaps even more importantly, the Federal Reserve gave dovish signals as inflation kept easing. That caused the market to expect even lower interest rates this year, according to CME’s FedWatch tool.
Optimism could additionally be building after a long period of negativity. NFIB reported the most confidence among small businesses in over two years, and the University of Michigan’s consumer sentiment index rose for the first time in five months. Consumer confidence, a separate report, inched past estimates as expectations improved.
Last month saw major changes in the market as investors shifted from large growth stocks toward sectors like consumer staples and real estate. Those companies stand to benefit from rate cuts. The rotation away from megacaps also strengthened the market’s overall breadth, which sent the advance/decline line to new highs.
Consumer staples broke out as several members rallied. Kellanova (K) was acquired by Mars and Coca-Cola (KO) rode momentum from quarterly results in July. Strong demand and increased profitability also drove Walmart (WMT) to new record highs.
Another interesting point: Berkshire Hathaway’s (BRK.B) market capitalization rose above $1 trillion. It was the first non-Nasdaq company to cross that threshold.
Energy was the worst performer. Traders are worried about Chinese demand for oil and more supply as OPEC+ countries increase production.

August was an especially volatile month, with the S&P 500 traversing 532 points from low to high. It was the biggest swing since September 2022, according to TradeStation data.
CBOE’s volatility index was even more intense, whipsawing more than 51 points. That move trailed only the dramatic spike during the coronavirus lockdowns of March 2020.
Volatility later calmed and weekly fluctuations returned to the previous norms of less than 100 points.
The narrowing price action may remind some chart watchers of other moments since the rally began in November. The tight sideways consolidation patterns (marked with shaded boxes on the chart above) potentially reflect a lack of selling pressure.
Next is the price area around 5560, a weekly low in mid-July and a daily high as the index crashed. The S&P 500 tested and remained above that zone the last two weeks of August, which could suggest new support has developed near old peaks.
Some indicators of breadth may also appear favorable. For example, the Advance/Decline Line rose to a new high last week. TradeStation data also showed more than 450 members of the S&P 500 were above their 20-day moving averages last week. Similar readings, like June and November of 2023, were followed by upside in the broader market.
Finally, technology had a volatile month as money shifted to other sectors. However two catalysts may have the potential to revive interest in the sector. One is Apple’s (AAPL) product event on September 9, which is widely expected to feature a new AI-capable iPhone. Second, Nvidia (NVDA) has struggled amid delays to its Blackwell AI processors. Progress on the new super-computing chips could have a potentially big impact on tech stocks.
See the table below for more key events in September.
| Top Gainers in the S&P 500 Last Month | ||
| Kellanova (K) | +39% | The snackmaker is getting acquired by Mars, 10 months after separating from cereal company WK Kellogg |
| Fortintet (FTNT) | +32% | The cybersecurity firm reported better-than-expected earnings and revenue. |
| Axon (AXON) | +22% | Earnings and revenue beat estimates at the law-enforcement supplier. Guidance was also raised. |
| Starbucks (SBUX) | +21% | The coffee chain hired Chipotle Mexican Grill’s (CMG) Brian Niccol as its new CEO, spurring optimism about a potential comeback. |
| Clorox (CLX) | +20% | The consumer-products company beat earnings estimates as cost cuts boosted margins. |
| Top Decliners in the S&P 500 Last Month | ||
| Super Micro Computers (SMCI) | -38% | The maker of AI servers fell after profit margins weakened. It declined further after delaying its quarterly filing. |
| Moderna (MRNA) | -35% | The vaccine maker cut its outlook on weak demand for coronavirus inoculations. |
| Dollar General (DG) | -31% | The discount retailer had its biggest monthly loss ever after earnings and revenue missed estimates. |
| Intel (INTC) | -28% | The chipmaker hit a 14-year low after weak guidance made investors doubt its turnaround potential. The stock has lost more than half its value this year. |
| Walgreen Boots Alliance (WBA) | -22% | The pharmacy chain hit a 28-year low, continuing to slide on the heels of a weak quarterly report in July. |
| Consumer Staples | +6% |
| Real Estate | +5.7% |
| Health Care | +5.1% |
| Utilities | +4.8% |
| Financials | +4.6% |
| Industrials | +2.8% |
| Materials | +2.3% |
| S&P 500 | +2.3% |
| Communications | +1.7% |
| Technology | +0.6% |
| Consumer Discretionary | -0.2% |
| Energy | -2.1% |
Below are some key economic events from last month.
Below are some noteworthy commentaries:
| Product | Current Month | Expiration | Next Month | 1-Mon% |
| S&P 500 E-Mini (@ES) | ESU24 (Sep) | 9/20/24 | ESZ24 | +1.9% |
| Nasdaq-100 E-Mini (@NQ) | NQU24 (Sep) | 9/20/24 | NQZ24 | +0.6% |
| Dow Jones E-Mini (@YM) | YMU24 (Sep) | 9/20/24 | YMZ24 | +1.4% |
| Russell 2000 E-Mini (@RTY) | RTYU24 (Sep) | 9/20/24 | RTYZ24 | -2.2% |
| Date | Event | What to Watch For |
| Fri 9/5 | Non-farm payrolls | Hiring and wage trends in July |
| Mon 9/9 | Apple product event | Can AI power an iPhone upgrade cycle? |
| Wed 9/11 | Consumer price index (CPI) | Inflation trends in August |
| Tue 9/17 | Retail sales | The strength of consumer spending |
| Wed 9/18 | Federal Reserve meeting | Policymakers are expected to cut interest rates |
Standardized Performances for ETF mentioned above
| ETF | 1 Year | 5 Years | 10 Years |
| SPDR S&P 500 ETF (SPY) | +20.32 | +85.19% | +185.26% |
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