How do index funds work for dummies?
Index funds invest in the same assets using the same weights as the target index, typically stocks or bonds. If you're interested in the stocks of an economic sector or the whole market, you can find indexes that aim to gain returns that closely match the benchmark index you want to track.
As with other mutual funds, when you buy shares in an index fund you're pooling your money with other investors. The pool of money is used to purchase a portfolio of assets that duplicates the performance of the target index. Dividends, interest and capital gains are paid out to investors regularly.
Index funds are popular with investors because they promise ownership of a wide variety of stocks, greater diversification and lower risk – usually all at a low cost. That's why many investors, especially beginners, find index funds to be superior investments to individual stocks.
While indexes may be low cost and diversified, they prevent seizing opportunities elsewhere. Moreover, indexes do not provide protection from market corrections and crashes when an investor has a lot of exposure to stock index funds.
Most index funds pay dividends to their shareholders. Since the index fund tracks a specific index in the market (like the S&P 500), the index fund will also contain a proportionate amount of investments in stocks. For index funds that distribute dividends, many pay them out quarterly or annually.
Start small and steadily grow your wealth using products and services like fractional shares, index funds, ETFs, retirement plans, brokerage accounts and robo-advisors. Alieza Durana joined NerdWallet as an investing basics writer in 2022.
Index funds pay dividends monthly, quarterly or annually. It may vary depending on the securities held.
The average stock market return is about 10% per year, as measured by the S&P 500 index, but that 10% average rate is reduced by inflation.
At least once a year, funds must pass on any net gains they've realized. As a fund shareholder, you could be on the hook for taxes on gains even if you haven't sold any of your shares.
There are many ways to start investing, but one that's worked for billionaires like Warren Buffett is investing in low-cost index funds.
What is the best index fund for beginners?
For beginners, the vast array of index funds options can be overwhelming. We recommend Vanguard S&P 500 ETF (VOO) (minimum investment: $1; expense Ratio: 0.03%); Invesco QQQ ETF (QQQ) (minimum investment: NA; expense Ratio: 0.2%); and SPDR Dow Jones Industrial Average ETF Trust (DIA).
Much of it, yes, but not entirely. In a broad-based sell-off of a market, the benchmark index will lose value accordingly. That means an index fund tied to the benchmark will also lose value.
Exchange-traded funds (ETFs) and index funds are similar in many ways but ETFs are considered to be more convenient to enter or exit. They can be traded more easily than index funds and traditional mutual funds, similar to how common stocks are traded on a stock exchange.
The easiest and cheapest path to diversification
Buffett not only sees index funds as the simplest path to achieve a diversified portfolio, but they're also the cheapest.
Once you have $1 million in assets, you can look seriously at living entirely off the returns of a portfolio. After all, the S&P 500 alone averages 10% returns per year. Setting aside taxes and down-year investment portfolio management, a $1 million index fund could provide $100,000 annually.
Index mutual funds & ETFs
Constant buying and selling by active fund managers tends to produce taxable gains—and in many cases, short-term gains that are taxed at a higher rate.
Reinvest Your Payments
The truth is that most investors won't have the money to generate $1,000 per month in dividends; not at first, anyway. Even if you find a market-beating series of investments that average 3% annual yield, you would still need $400,000 in up-front capital to hit your targets. And that's okay.
Investing $100 per month, with an average return rate of 10%, will yield $200,000 after 30 years. Due to compound interest, your investment will yield $535,000 after 40 years. These numbers can grow exponentially with an extra $100. If you make a monthly investment of $200, your 30-year yield will be close to $400,000.
For simplicity's sake, assume that compounding takes place once a year. After 20 years, you will have paid 20 x 12 x $100 = $24,000 into the fund. However, the compounding return will more than double your investment.
According to Standard and Poor's, the average annualized return of the S&P index, which later became the S&P 500, from 1926 to 2020 was 10%. 1 At 10%, you could double your initial investment every seven years (72 divided by 10).
How long should you stay in an index fund?
Ideally, you should stay invested in equity index funds for the long run, i.e., at least 7 years. That is because investing in any equity instrument for the short-term is fraught with risks. And as we saw, the chances of getting positive returns improve when you give time to your investments.
How much is needed to invest in an index fund? The minimum needed depends on the fund and your broker's policies. If your broker allows you to buy fractional shares of stock, you may be able to invest in index fund ETFs with as little as $1. If not, your minimum investment will be the cost of one share of the ETF.
Over the past decade, you would have done even better, as the S&P 500 posted an average annual return of a whopping 12.68%. Here's how much your account balance would be now if you were invested over the past 10 years: $1,000 would grow to $3,300. $5,000 would grow to $16,498.
In 1980, had you invested a mere $1,000 in what went on to become the top-performing stock of S&P 500, then you would be sitting on a cool $1.2 million today.
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