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What Is Micro Investing? Definition & FAQs

Written by Than Merrill
| Reviewed by Nick Hartegan

You may think that investing is out of your reach. As a matter of fact, 48% of people who don’t invest their money feel that they can’t afford to.

To a certain extent, this makes sense. The stereotypical investor is a rich person in a penthouse apartment, trading millions of dollars in stocks every day.

But investment doesn’t have to be expensive. ETFs and finance apps have democratized the financial world to the point where just about anyone can become an investor. So, how can you get in on the micro investing game? Here’s a quick guide.

What Is Micro Investing?

Micro investing is exactly what it sounds like. Instead of buying individual shares or blocks of 100 shares, you can purchase fractional shares. Take a stock like Tesla, which trades for $219 a share as of October 2022. You might not have that much money to invest out of every paycheck. Using a traditional method, you’d have to save up $219, then execute a trade. But with micro investing, you could invest just a few dollars.

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micro investor

How Does Micro Investing Work?

Micro-investing can work in different ways. Some apps, like Robinhood, are designed for people who prefer a hands-on approach to investing. You can buy and sell particular stocks or ETFs at will and invest in any dollar amount.

Other apps, like Acorns, are designed for more hands-off investors. You choose what you want to invest in, and they take care of the rest. Your debit card is linked to the app, which rounds up each purchase to the nearest dollars and invests the change. For example, if you spent $4.50 on a cup of coffee, you’d see a $5 charge. $4.50 would pay for the coffee, and Acorns would invest the other $0.50.

Micro Investing Vs. Regular Investing

Micro investing and traditional investing aren’t all that different. You’re still investing in financial securities, and you’re still trying to maximize your gains. The main difference is that micro investing is more accessible to the average person.

Regular trading platforms often come with high minimum investments, and you may need to save $1,000 or more before you can even think about investing. You may also have to pay fees of between $5 and $7 per transaction, which makes small-dollar trades prohibitively expensive. And if you’re only buying individual shares, it can be tough to diversify your investments.

Micro investing platforms have low to no minimum investment and charge no trading fees. Depending on the platform, you can save at your own pace, even if you can only afford to invest a few dollars a month. And since you can buy fractional shares, you can build a diverse portfolio right from the start.

Micro Investing Vs. Larger Sum Investing

There’s nothing inherently wrong with investing larger sums of money, and people have been doing it for a lot longer than they’ve been micro investing. But if you have to save up to invest more money, you won’t be optimizing your growth.

Remember, your money only grows when it’s invested in the market. Every day your money sits in your checking account is a day it’s not earning any return.

Let’s say you have $100 a week to invest, but your traditional investing platform requires a $1,000 investment. To save up enough to invest, you’d have to wait for 10 weeks. During that 10 weeks, you’d have an average of $500 sitting in checking, doing nothing.

Now imagine you do this on a regular basis, and your investments earn a (modest) 5% average annual return. With an average of $500 not earning a return, you’d be missing out on $25 per year (and the compound growth that comes with it). With a micro investing platform, you’ll be able to capture all of that growth.

Advantages Of Micro Investing

So, why would you want to pursue micro investing rather than a more traditional method? Here are a few good reasons:

  • No minimum investment – This is the main appeal of micro investing. You can set aside any amount at any time, often as little as $1. Even if you’re fresh out of college with a boatload of debt, you can still build a nest egg. An investment of pennies a day is better than nothing and can help you build a strong base for future success.

  • Plenty of options – Most micro investing platforms allow you to invest in multiple types of securities. In addition to stocks, you can trade bonds, ETFs, and even commodities. Some micro investing apps even allow you to buy and sell cryptocurrency. As a result, you’re not locked into one or two types of assets.

  • Low or zero fees – If you’re investing a few dollars or even pennies at a time, the last thing you need is a bunch of fees. Depending on your platform, fees can cost as little as 1.18%. That’s far less than you’ll pay on a traditional trading platform./p>

  • Automatic portfolio rebalancing – Many micro investing platforms allow you to allocate your investments by percentage. The app will then periodically rebalance your portfolio without any input on your part. This allows you to maintain a well-diversified portfolio with minimal hassle.

  • A simpler interface – Traditional investing platforms are generally built with experts in mind. They assume that you have experience in the market and know what to look for. Micro investing platforms are built for beginners. They make it easier to find the most important information, so you don’t have to hunt around.

Disadvantages Of Micro Investing

Of course, micro investing also has its downsides. Here are some of the drawbacks:

  • They can lead to bad investing habits – Most financial advisors recommend buying stocks and sticking with them for the medium or long term. Micro investing platforms make it easy to buy and sell on the fly, which is ultimately a losing strategy.

  • Fewer account options – While you’ll be able to trade securities, that’s about it. You won’t be able to open an IRA or money market account, for example.

  • Fewer investment options – Micro investing platforms don’t always offer the full array of stocks and ETFs you can find on a traditional platform. Some offer ETFs exclusively, so you can’t buy individual stocks.


Micro investing represents an opportunity for anyone to get in on the market. With just a few dollars a month, you can buy the same stocks and ETFs as major Wall Street players. It’s not a perfect system by any means, but it’s a great way to dip your toes into the world of investing.

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