Want to Become a Stock Market Millionaire? History Says This Investment Can Get You There.

Index ETFs provide you with an instant diversified portfolio, low fees, and the ability to trade easily.

The Vanguard S&P 500 ETF is the largest ETF in the world, with $1.7 trillion in assets.

Starting early and adding funds consistently can get you to millionaire status.

Investing in the stock market is all about creating wealth. Today, through the proliferation of online platforms and no-fee trades, as well as increasing accessibility of investment advice anyone can generate life-changing wealth.

There are many ways to become a millionaire over time, but there's one method that's simple, low-risk, and time-tested. I'm talking about buying an exchange-traded fund (ETF) that tracks the S&P 500 .

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Let's take a step back and discuss what the S&P 500 is. It's often used as a proxy for the market, but as its name implies, it's an index of 500 stocks. There are various criteria to be included, such as having a minimum market capitalization of $20.5 billion, generating profits in the most recent quarter and over the trailing 12 months, and being based in the U.S.

The index is run by S&P Global , and it's rebalanced quarterly. The index is weighted, which means larger stocks by market value have a greater representation.