How Much Would A $100 investment be worth in 100 years?

 Investing $100 in the stock market today could yield a significant return over time. Assuming you invest your money into a diversified portfolio and that it remains invested for 100 years, your initial investment of $100 would be worth an estimated $22,800 in the year 2120.

This estimate is based on historical stock market returns which have averaged around 10% annually over the past century. While there's no guarantee that this rate of return will continue indefinitely, investing with a long-term perspective has generally been successful for many investors over time. To maximize your chances of success when investing in stocks, it’s important to diversify across different asset classes such as bonds and cash as well as stocks since each asset class has different risks and returns. Additionally, it's important to be mindful of the fees associated with investing, since these can eat away at your returns over time. Finally, if you're looking for a conservative approach to investing in stocks then you may want to consider dollar-cost averaging which involves regularly making small investments into the stock market over time rather than putting all of your money in one lump sum. This will help reduce the risk of losses due to volatility as well as potential gains that could have been achieved by timing the markets perfectly. In short, by investing $100 into a diversified portfolio of stocks today and leaving it invested for 100 years, you could expect an estimated return of around $22,800 after a century. This estimate is based on the historical stock market returns and assumes that you remain invested for the entire period. However, it's important to remember that past performance is no guarantee of future returns and so you should always be mindful of the risks associated with investing in stocks.