According to Bank of America, the S&P 500 has fallen 56% of the time in September. In the first year of a Presidency, the odds are slightly worse, and the average fall slightly greater. Since 1927, September is the only month of the year with an average decline (February and May are flat and the other months positive).
The Bank Panic of 1907, the Stock Market Crash of 1929, and Black Monday 1987 all happened during the month of October. Historically, September has had more down markets than October.
Is a stock market crash coming in 2026? The short answer is that it's impossible to say, even for the experts. That said, some stock market indicators suggest that the market may be overvalued.
October is often seen as a bad month for stocks. The tough times that have happened in October are enough to scare off anyone. From the panic of 1907 to Black Tuesday of 1929 and, more recently, Black Monday of 1987, the month of October has been ripe with financial crises and market crashes over time.
Is September Actually Bad for Stocks? September naysayers point out the month's history can appear bad for stocks. Indeed, since reliable market data began in 1926, September is not only the worst average month, but the only month to average negative returns at -0.75% (Exhibit 1)[i].
When Stocks Crash, Should You Buy? | European Investor
Is October good for stocks?
With the volatile month of October nearing its end (since 1945, the S&P 500's standard deviation of monthly returns in October has been 33% greater than the average for the other 11 months), here's what investors could keep in mind as we enter the historically best part of the year for stocks.
The 3-5-7 rule in stock trading is a risk management framework: risk no more than 3% of capital on a single trade, keep total open position exposure under 5%, and aim for profit targets that are at least 7% (or a favorable risk/reward ratio) of your initial risk, protecting capital and promoting discipline. It's popular for beginners because it simplifies risk control, preventing catastrophic losses and fostering consistent, small gains over time.
In fact, since these indices were first established, September has earned a reputation for being a historically weak month for returns. Going back to 1928, the S&P 500 has declined an average 1.2% in September, the weakest month of the year for stocks.
September is historically the worst month for the S&P 500, averaging a 1.2% loss since 1928, with frequent volatility and notable declines. Possible causes include portfolio rebalancing, tax strategies, and a self-fulfilling prophecy as investors anticipate weakness, but no single explanation dominates.
A 2019 study by Harvard Business Review found either Vanguard, BlackRock or State Street is the largest listed owner of 88% of S&P 500 companies. There is a perception that a few select companies own a vast majority of the stock market.
The "Rule of 90" in stocks usually refers to the "90-90-90 rule," a harsh statistic stating 90% of new traders lose 90% of their capital within 90 days due to lack of education, poor risk management, and emotional trading, highlighting the need for strategy and discipline. Alternatively, it can refer to Warren Buffett's 90/10 rule, recommending 90% in low-cost S&P 500 index funds and 10% in short-term bonds for long-term growth with diversification.
Yes, a 30% return is possible in a single year, but it usually requires aggressive strategies, concentrated bets, higher risk, and luck, as it's significantly above the S&P 500's average (around 10%), making it challenging to achieve consistently year after year. Strategies like leveraging, focusing on volatile assets, or value investing in specific situations can aim for such gains, but they come with significant volatility and potential for losses.
In my view, both Microsoft and Halma might well be worth considering. While their share prices might fall, they could also have the chance to strengthen their competitive positions. Investors might think about these as good assets to own in a stock market crash.
What if I invested $1000 in Coca-Cola 30 years ago?
A $1,000 investment in Coca-Cola 30 years ago would have grown to around $9,030 today. KO data by YCharts. This is primarily not because of the stock, which would be worth around $4,270. The remaining $4,760 comes from cumulative dividend payments over the last 30 years.
The table below shows the present value (PV) of $20,000 in 10 years for interest rates from 2% to 30%. As you will see, the future value of $20,000 over 10 years can range from $24,379.89 to $275,716.98.
If you would have invested ₹1,000 per month for 5 years at a conservative 10% p.a. return, you could have accumulated around ₹77,437 today. If you would have consistently invested ₹1,000 per month for 10 years, you could have accumulated a corpus of around ₹2,04,845 today (assumed returns of 10% p.a.).
When you look at the averages, there is no apparent reason for October to have its grim reputation. The MSCI World has logged 55 Octobers since data start on 12/31/1969. Their average return is 0.9%, with a 58.2% frequency of gains. This puts October's average return mid-pack, the seventh best of all 12.
Traders often begin their tax-loss selling in September so their portfolios are correctly positioned moving into year-end. An increase in selling by portfolio managers can put a lot of pressure on the market.
How much is $10000 worth in 10 years at 5 annual interest?
If you want to invest $10,000 over 10 years, and you expect it will earn 5.00% in annual interest, your investment will have grown to become $16,288.95.
The "Buffett Rule 70/30" isn't one single rule but refers to different concepts: it can mean investing 70% in stocks and 30% in "workouts" (special situations like mergers) as he did in 1957, or it's a popular guideline for personal finance to save 70% and spend 30% for rapid wealth building. It's also confused with the general guideline of 100 minus your age for stock/bond allocation (e.g., 70% stocks if 30 years old).
