S&P 500 Falls 1.3% in September as Investors Face Market Turbulence

The S&P 500 has dropped over 100 points since the start of September. Historical data suggests that maintaining a disciplined investment strategy often outperforms market timing attempts during corrections.
The S&P 500 index has declined by approximately 1.3% since the beginning of September. This represents a loss of more than 100 points from the start of the month. According to GN auto markets/indices: stock index data, this aligns with historical patterns where September is typically the weakest performance month for the benchmark.
Despite the recent dip, the index remains up over 15% year-over-year. It has also recorded an 11% gain since the start of 2026. Investors are currently weighing factors such as geopolitical tensions, inflation rates, and rising Treasury yields against these long-term gains.
Historical Data Shows Routine Market Pullbacks
Stock market sell-offs are a common occurrence in financial history. Since 1957, the S&P 500 has experienced at least 60 drawdowns of 5% or more. Within that period, 22 corrections reached a 10% decline, while 10 dropped by at least 20%.
A $10,000 investment made in 1957 would have grown to $1.6 million by today. This growth occurred despite numerous market downturns. Since 1929, there have been 56 market corrections, with 22 of those evolving into bear markets.
The average correction has declined by about 14% and lasted roughly 115 days. Since 1928, the S&P 500 has delivered an average annual return of approximately 10%. These figures indicate that short-term volatility is often outweighed by long-term growth.
Timing the Market Increases Investor Risk
Research from Hartford Funds indicates that about three-quarters of the market's best days occur during bear markets. Many of these high-return days also happen within two months of a new bull market beginning.
Selling assets during a downturn to buy lower later rarely yields the expected results. Markets often recover before investors feel confident that the danger has passed. Attempting to time these shifts can lead to missed opportunities for wealth accumulation.
Long-Term Strategy Beats Short-Term Reaction
For investors who do not need their funds for several years, staying invested is generally the most effective approach. Those with short-term cash needs or highly concentrated portfolios may require different strategies. Diversification can reduce exposure to specific sector risks.
A disciplined investment plan is favored by historical data over reactive trading. Waiting for turbulence to end can be riskier than investing through it. Consistency in strategy helps investors navigate the inevitable fluctuations of the market.






