5 painfully common investing mistakes to avoid right now

Avoiding these mistakes can save you thousands of dollars.

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More

This article was originally published on Fool.com. All figures quoted in US dollars unless otherwise stated.

There's no such thing as a perfect investor. Even the most seasoned investing experts make bad investments every now and then. However, good investors understand that some fundamental mistakes can (and should) be avoided to make you a better investor.

Here are five painfully common investing mistakes to avoid.

1. Underestimating the power of compounding

In investing, one of the best resources on your side is time -- the earlier you begin investing, the better. Time is so important because of compounding, which occurs when your investment returns begin to earn returns of their own.

To illustrate the power of compounding, let's imagine a scenario where your investments return 10% annually (the historical average annual return of the S&P 500). If you contribute $500 a month, here's how much you'd roughly accumulate at different points in time:

Monthly Contribution Years Account Total
$500 10 $95,600
$500 15 $190,600
$500 20 $343,600
$500 25 $590,100
$500 30 $987,000

Chart and calculations by author.

In this scenario, although it will take 10 years to potentially accumulate $95,000, it will take only five more years to almost double that amount. Although you managed to gain $153,000 in the five years between year 15 and year 20, in the five years between year 25 and year 30, your investment will possibly gain over $396,000. That showcases the true power of compounding.

2. Ignoring an index fund's expense ratio

Even though you won't be charged to purchase an index fund, you'll pay an expense ratio, which is charged annually as a percentage of your total investment. If an index fund has a 0.50% expense ratio, you'll pay $5 per $1,000 that you invest. If the expense ratio is 0.25%, you'll pay $2.50 per $1,000 invested.

A small difference in percentages may not seem like much but can really add up over time. Just a difference in a quarter of a percentage point can add up to tens of thousands in the long run.

3. Keeping up with a stock's daily price movement

The only thing guaranteed in the stock market is volatility. No matter how great a business is, you can expect its stock price to fluctuate -- that's just how it works.

If you're a long-term investor, a stock's daily price movements shouldn't affect you or change your attitude toward the investment. If you're investing in fundamentally sound businesses, you should be able to trust that they'll produce great returns over the long term, even if they're having a rough time in the short term.

4. Equating price with cheap or expensive

You shouldn't look at a stock's price by itself to determine whether or not it's cheap or expensive. It could very well be the case that a $20 stock is expensive and a $1,000 stock is cheap. Investors should use other metrics to determine whether or not a stock is a good value at its current price.

One common metric to determine a stock's value is its price-to-earnings (P/E) ratio, which compares a company's stock price to its earnings per share (EPS). Calculating a company's P/E ratio and comparing it to similar companies is one way to help determine if it's overvalued or undervalued.

5. Ignoring dividends

Outside of an increase in a stock's price, dividends are the other primary way to make money from an investment. While younger companies tend to not pay dividends because they need to reinvest the money back into the company to continue growing, older, more established companies typically pay out dividends because they likely have less room for hypergrowth in their stock price. It's a way to reward shareholders for holding onto their investments.

If you consistently buy dividend-paying stocks, you can set yourself up to have a decent amount of income coming in, both now and in retirement. Along with retirement accounts and Social Security, dividends can play a huge role in supplementing your retirement income. In some cases, it can be thousands monthly. 

This article was originally published on Fool.com. All figures quoted in US dollars unless otherwise stated.

The Motley Fool Australia's parent company Motley Fool Holdings Inc. has no position in any of the stocks mentioned. The Motley Fool Australia has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy. This article contains general investment advice only (under AFSL 400691). Authorised by Scott Phillips.

More on International Stock News

Blue electric vehicle on a green rising arrow with a charger hanging out.
International Stock News

Boom! Why has Tesla stock rocketed 68% so far in 2023?

It's already been a year to remember for the electric vehicle giant.

Read more »

A male investor wearing a white shirt and blue suit jacket sits at his desk looking at his laptop with his hands to his chin, waiting in anticipation.
International Stock News

How an AI demo erased $140 billion from Alphabet stock

One error made this a costly display of Alphabet's new technology.

Read more »

A man with a beard and wearing dark sunglasses and a beanie head covering raises a fist in happy celebration as he sits at is computer in a home environment.
Share Market News

Meta stock price rockets 19% on $56 billion buyback

Meta stock has just seen one of its biggest jumps in history...

Read more »

woman looking surprised watching netflix
International Stock News

The Netflix share price just popped. Here's one way to buy in on the ASX

Here's one way to get a slice of whatever future Netflix might have.

Read more »

A futuristic view of electric vehicle technology with speeding bright light trails indicating power.
International Stock News

If I'd bought $5,000 of Tesla stock 3 years ago, what would my investment be worth now?

Here's how much mind-blowing money investors have made on Tesla stock in three years...

Read more »

A man and a woman sit in front of a laptop looking fascinated and captivated.
International Stock News

Alphabet stock: A once-in-a-decade opportunity to outdo Warren Buffett?

Is now the time to snap up shares in the global tech giant?

Read more »

Piggy bank on an electric charger.
International Stock News

Aussie investors are buying Tesla shares in droves. Should you?

A beaten-up stock, dramatic price cuts, and a controversial leader -- does investing in Tesla still make sense?

Read more »

Happy woman on her phone while her electric vehicle charges.
International Stock News

Should I buy Tesla stock for 2023 or not?

Is it finally time to buy Tesla stock?

Read more »