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Key takeaways
A stock split changes the number of shares outstanding and the price per share, but it doesn’t change the total value of your holdings right away.
Companies often split their stock after significant price changes.
A stock split doesn’t change a company's fundamentals or automatically make a stock a better investment.
Companies occasionally announce stock splits, often generating headlines and investor attention. If you've ever wondered what a stock split is, how it works, or whether it matters for your investing decisions, you're not alone.
While stock splits change the share count, they don’t change the company’s underlying value or your ownership percentage. Understanding the mechanics behind stock splits can help you keep these events in context.
"A stock split changes the packaging of ownership, not the underlying value of the company," says Rob Haworth, senior investment strategy director with U.S. Bank Asset Management Group. "Investors should focus on a company's fundamentals rather than the number of shares they own."
What is a stock split?
A stock split happens when a company changes its number of shares outstanding and adjusts the share price by the same factor. In a forward stock split, you end up with more shares, and each share is worth less. Your ownership percentage stays the same, and your investment value usually stays the same right after the split.
“A stock split changes the packaging of ownership, not the underlying value of the company.”
-
Rob Haworth, senior investment strategy director, U.S. Bank Asset Management Group
How does a stock split work?
A stock split changes the packaging of your shares, not the value of them. Here’s a step by step look at how it works.
- The company sets a split ratio. Common ratios include 2-for-1, 3-for-1, 4-for-1, 3-for-2, and 10-for-1.
- Your share count and price adjust. If it’s for a 4-for-1 split, every share becomes four, each at a quarter of the original price.
- Your account updates on its own. Your brokerage handles the adjustment automatically.
A 4-for-1 stock split example
Assume you own 100 shares of a company trading at $400 per share.
|
Before split |
After 4-for-1 split |
|---|---|
|
100 shares |
400 shares |
|
$400 share price |
$100 share price |
|
$40,000 total value |
$40,000 total value |
Before split
After 4-for-1 split
100 shares
400 shares
$400 share price
$100 share price
$40,000 total value
$40,000 total value
After the split, only the number of shares and the price per share change. The total value of your investment is typically unchanged immediately after the split.
Can stock splits create fractional shares?
Sometimes. Not every stock split results in a whole number of shares for every investor. Depending on the split ratio and the number of shares you own, you may end up with a fraction of a share.
For example, if you own 25 shares and a company performs a 3-for-2 stock split, you’d have 37.5 shares after the split. In some cases, you may receive the additional one-half share. In others, the company may pay cash for the fraction.
Why do companies split their stock?
Companies split their stock for several reasons. Here are a few common ones.
Making shares more accessible
As a company's stock price rises, it can cost more to buy even one share. A lower share price may make the stock feel more within reach, especially if you’re buying smaller amounts or you’re newer to investing.
While fractional shares have increased accessibility for investors, stock splits remain a common way companies reset share prices after significant appreciation.
Maintaining desired trading ranges
Some companies prefer their stock to trade within a certain price range. A stock split can bring down a high share price while keeping the company’s total market value the same.
Index eligibility and mechanics
Stock splits can also affect how a company is treated by certain market indexes. Price-weighted indexes, such as the Dow Jones Industrial Average, use share prices to calculate index values rather than a company’s total market value. That means a single high-priced stock trading can have an outsized influence on the index.
A stock split can lower a high share price and, in some cases, support a company's continued eligibility or standing within an index. However, index committees still look at factors beyond share price, so a split alone doesn’t guarantee a change in index status.
What is a reverse stock split?
A reverse stock split works the other way. It reduces the number of shares outstanding and raises the share price by the same factor. As with a forward stock split, your ownership percentage stays the same, and your investment value is usually unchanged immediately after the transaction.
Why do companies conduct reverse stock splits?
Companies may use reverse stock splits to:
- Meet stock exchange listing requirements
- Raise an extremely low share price
- Support a corporate restructuring
- Improve market perception
A reverse stock split doesn’t automatically mean a company is in trouble. Still, it’s worth understanding the reason for the split and looking at the company’s broader financial picture.
What happens to your shares in a stock split?
Most investors don’t need to do anything when a stock split occurs. Brokerage firms generally update your share count automatically after the split takes effect.
Cost basis adjustments
The total cost basis of your investment remains the same following a stock split, but the cost basis per share changes to reflect the new share count.
Fractional shares and cash payments
Some investors receive fractional shares or cash payments that represent fractional ownership interests, often referred to as "cash in lieu."
You should review transaction statements and tax documents following a stock split to understand any changes to your holdings.
Are stock splits taxable?
In most cases, stock splits aren’t taxable events. Because you maintain the same ownership and value before and after the split, stock splits generally don’t trigger taxable gains or losses.
However, special situations may come up when you receive cash in lieu of a fractional share. Tax treatment can vary by situation, so consider talking with a qualified tax professional about your circumstances.
Does a stock split make a stock a better investment?
Not necessarily. A stock split does not change a company's:
- Revenue
- Earnings
- Cash flow
- Profitability
- Competitive position
Those factors ultimately drive long-term investment performance.
Focus on the company’s fundamentals
Future investment returns depend on the company's fundamentals and valuation, not the number of shares you own. Many strong companies have split their shares, while many others haven’t. The decision to invest should be based on business fundamentals rather than stock-split announcements alone.
"A lower share price after a split can sometimes lead to more active trading, since it may be easier for a broader range of investors to buy round lots," Haworth says. "That can affect short-term liquidity, but it's a separate question from whether the underlying business is a sound long-term investment."
Understanding stock splits
Stock splits can get attention because they change the number of shares you own and alter a stock's share price. However, they don’t change the company’s underlying value or automatically increase investment returns.
Whether a company announces a forward stock split or a reverse stock split, you’re generally best served by focusing on the factors that drive long-term performance: earnings growth, competitive advantages, financial strength, and valuation.
Understanding how stock splits work can help you put these corporate actions into perspective and stay focused on your long-term investment goals.
From investing online to working with a financial professional, learn more about your investing options.
Frequently asked questions
Is a stock split good or bad?
A stock split is neither inherently good nor bad. It changes the number of shares outstanding and the share price but doesn’t change the value of the company.
Should I buy a stock before a split?
A stock split alone shouldn’t be the reason to purchase an investment. You should focus on the company's fundamentals, valuation, and long-term prospects.
Do I lose money in a stock split?
Generally, no. The total value of your holdings stays the same immediately following a stock split.
Can stock splits create fractional shares?
Yes. Certain split ratios may result in fractional ownership, which may be distributed as fractional shares or paid out in cash.
What is the difference between a forward stock split and a reverse stock split?
A forward stock split increases the number of shares outstanding and lowers the share price. A reverse stock split decreases the number of shares outstanding and raises the share price.
How many times can a company split its stock?
There's no legal limit on how many times a company can split its stock. Some companies have split their shares multiple times over the years as their stock price has climbed, while others have never split at all.
Does a stock split affect dividends?
A stock split itself doesn't change the total dollar amount of dividends you receive, but companies typically adjust the per-share dividend rate to reflect the new share count, so your overall payout stays proportional.
Why don't all companies split their stock?
Some companies, such as those with historically high share prices, choose not to split their stock because they want to attract long-term, fundamentals-focused investors rather than encourage frequent trading. There's no requirement for a company to ever split its shares.
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