The stock market built up some positive momentum last week, but it's unclear whether the good times will last. At the market open on Monday morning, the Dow Jones Industrial Average (DJINDICES: ^DJI) had given back a tiny portion of its substantial recent gains, trading down about 0.25%.

Even though this earnings season is starting to wind down, some key components of the Dow Jones Industrials are set to report their latest results in the coming week. What Walmart (NYSE: WMT), Home Depot (NYSE: HD), and Cisco Systems (NASDAQ: CSCO) say about the conditions of their respective businesses will play a key role in determining whether last week's rally continues through this one, or whether the bear will growl once again.

Getting ready for retail

Tuesday morning will bring two key reports from the retail sector. Department store giant Walmart is set to release its results at around 7 a.m. ET, while Home Depot has historically gotten a slightly earlier start, having published its press release last quarter at 6 a.m. ET.

Walmart's numbers for its fiscal 2023 second quarter, which ended July 31, showed considerable strength amid a tough economic environment. Revenue rose 8.4% to $152.9 billion, and although operating income sagged 7% year over year due to higher costs, its net income of $5.15 billion was up 20% from year-earlier levels. However, the retailer warned at the time that conditions could continue to worsen for the rest of the fiscal year. Management projected that its fiscal 2023 sales would rise by about 4.5%, but forecast that adjusted earnings per share would fall by between 9% and 11% 

Home improvement specialist Home Depot also held up well in its fiscal 2022 second quarter, posting revenue of $43.8 billion for the period that ended July 31. That top-line figure was up 6.5% year over year. Earnings of $5.05 per share compared favorably to year-earlier profits of $4.53 per share, and Home Depot was able to confirm that it still sees its fiscal year sales climbing 3% on mid-single-digit percentage gains in earnings per share.  

Investors will be watching closely to see if ongoing macroeconomic pressures start to have bigger impacts on these companies' financials. Most analysts following Walmart's stock expect the company to post a year-over-year decline in earnings, albeit with continuing revenue growth. Meanwhile, Home Depot is expected to keep boosting its bottom line. Any disappointments on those fronts could put the Dow stocks' prices back on a downward slope, although investors will hope for better news to support the recent positive momentum.

Cisco looks to keep inching ahead

Meanwhile, Cisco Systems is set to announce its financial results after the closing bell on Thursday. Investors are hopeful that the networking giant will be able to keep bouncing back during what has been a tough year for tech stocks generally.

In Cisco's fiscal fourth quarter, which ended July 30, showed the pressures hitting the company. Revenue was down 0.2% year over year to $13.1 billion, with declines in internet-related revenue offsetting gains in the security and application optimization areas. Adjusted earnings dropped by 1% to $0.83 per share. However, annualized recurring revenue rose 8% to $22.9 billion, and Cisco continued to make headway in its transition toward getting more of its overall sales from subscription-based sources.

Investors are hopeful that its fiscal 2023 first-quarter report will show modest strength. Those following the networking giant anticipate sales growth of around 3% and a similarly small rise in earnings.

It's easy to overlook Cisco within the crowd of disruptive companies competing against it. However, the tech giant has a long legacy of success, and whatever it says Thursday has the  potential to ripple across the entire technology sector. 

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

The post These 3 Dow stocks will make or break the market this week appeared first on The Motley Fool Australia.

Countless factors affect stock prices on a daily basis. Some are very broad like global events and macroeconomic trends. Others are more narrow: company-specific news or changes to analyst price targets. But all of those things affect investor sentiment to some degree, making it impossible to predict which direction a stock (or even the broad market) will move in the short term.

You may hear stories about day traders who made a fortune overnight. Well, some lucky people have also become millionaires by playing the lottery, but that doesn't mean you should invest your money in lottery tickets. Several studies have shown the vast majority of day traders actually lose money, and the ones who manage to turn a profit often make less than minimum wage.

Put simply, the best way to make money in the stock market is a long-term investment strategy. For instance, the S&P 500 has produced a positive return 100% of the time over any 20-year window between 1919 and 2021, according to Crestmont Research. That means patient investors who held an S&P 500 index fund for at least two consecutive decades (at any point over the last century) always made money.

Here is one way to benefit from that information.

A simple way to make money in the stock market

The Vanguard S&P 500 ETF (NYSEMKT: IVOO) is a passively managed fund that tracks the performance of the S&P 500, which includes 500 of the largest U.S. companies. That may be less exciting than buying individual stocks, but there are several advantages to this strategy investors should consider.

First, the Vanguard S&P 500 ETF offers instant diversification across all 11 market sectors, and investors get exposure to some of the most valuable brands in the world. For instance, the top 20 holdings include industry-leading names like Apple, Inc. (NASDAQ: AAPL), Microsoft Corporation (NASDAQ: MSFT), Amazon.com, Inc.(NASDAQ: AMZN), The Home Depot, Inc.(NYSE: HD), Mastercard Incorporated(NYSE:MA), Visa Inc. (NYSE: V), UnitedHealth Group (NYSE: UNH), Johnson & Johnson (NYSE: JNJ), Tesla Corp Ltd (NASDAQ: TSLA), Alphabet Inc. (NASDAQ: GOOG) (NASDAQ: GOOGL), and ExxonMobil Corporation (NYSE: XOM).

Second, the Vanguard S&P 500 ETF is cheap and time-efficient. It bears an expense ratio of 0.03%, meaning investors would pay only $1.50 per year in fees on a $5,000 portfolio. Additionally, it requires very little work, because there is no need to research specific companies or stay up to date on financial results. Investors can simply buy the ETF and forget about it.

In short, while it may be boring, buying an S&P 500 index fund is a simple, inexpensive, and time-tested path to making money in the stock market. That's why Warren Buffett has often advocated for this investment strategy.

Third, the Vanguard S&P 500 has generated a total return of 206% over the last decade, which is equivalent to an annualized return of 11.8%. At that pace, $100 invested on a weekly basis would grow into a $1 million portfolio in 28 years, and it would grow into a $2 million portfolio in 34 years.

How I manage my portfolio

An S&P 500 index fund does not have to be your only investment. Personally, I keep a certain percentage of my portfolio in the Vanguard S&P 500 ETF, but I also own dozens of individual growth stocks. I think of the S&P 500 index fund as a sort of safety net, a reliable money maker in the long run.

Of course, nothing is truly guaranteed when it comes to the stock market, but the S&P 500 has undeniably produced a positive return over every rolling 20-year period since 1919. And that knowledge makes me feel comfortable taking a little more risk with my other investments.

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

The post This stock market investment strategy made money 100% of the time over the last century appeared first on The Motley Fool Australia.