Market Resilience: S&P 500 Defies September Seasonality
TREE NEWS reports: In a notable technical development, the S&P 500 entered September trading above its 200-day moving average, a position that historically reduces the risk of a sharp monthly decline. According to Oppenheimer & Co., when the index starts September above this key threshold, the average return is +0.2%, compared to a -3% average when it starts below. This year, the S&P 500 closed Monday at 7,686.14, well above the 200-day line of 7,122.92, despite a 0.3% daily dip.
What Happened
The S&P 500 has enjoyed a strong rally from its March lows, with August posting a 2.6% gain—the best August since 2021. Year-to-date, the index is up 12.3%, and over the past 12 months, it has gained 19%. This bullish momentum has placed the index just 1.4% below its all-time closing high of 7,798.99 set on August 13. Oppenheimer’s technical analyst Ari Wald noted that the market’s upward trend puts it in a relatively favorable position, with no major breakdown signals, which could help avoid the extreme downside scenarios often seen in September.
Market Impact Analysis
Stocks: The technical support from the 200-day moving average could buoy investor sentiment, potentially limiting sell-offs in September. Historically, when the index starts September above this level, the month’s average return is slightly positive, suggesting a possible resilience against seasonal weakness.
Bonds: If the stock market remains stable, Treasury yields may stay range-bound. However, upcoming inflation data could trigger volatility, as the market still prices in a possible Fed rate hike. Higher inflation could push yields up, pressuring bond prices.
Crypto: A stable equity market often correlates with risk-on sentiment, which could benefit cryptocurrencies. However, if geopolitical tensions escalate (as seen with the US-Iran clash), safe-haven flows might favor gold and the dollar over digital assets.
Commodities: Oil prices have already risen due to Middle East tensions, and any further escalation could push them higher, impacting inflation expectations and central bank policy. Gold may also see safe-haven demand.
Currencies: The US dollar could strengthen if geopolitical risks rise, but a stable stock market might reduce its safe-haven appeal. The focus remains on the Fed’s policy path, with any hawkish surprise boosting the dollar.
Why It Matters for Investors
September is historically the worst month for the S&P 500, but the current technical setup offers a cushion. The index’s strong performance in August and its position above the 200-day average suggest that a severe downturn is less likely. However, investors should remain vigilant about macro risks, particularly inflation data and geopolitical developments. The upcoming 100 trading days, spanning September and the seasonally strong Q4, will be a critical window. As Ari Wald puts it, “Bull markets don’t die of old age,” implying that the current uptrend may persist into 2027.
Key Takeaways
- Technical support from the 200-day moving average reduces September’s downside risk.
- Macro factors, especially inflation and Middle East tensions, will be the primary drivers of market direction.
- Investors should watch for any signs of a break below the 200-day average, which could signal a more bearish outlook.
- Historical data suggests that the current setup favors a positive or flat September, but caution is warranted given the geopolitical backdrop.
