Stock Split Explained: What Happens to Your Shares

A stock split increases the number of shares a company has by dividing each existing share into several. The price per share falls by the same proportion, so the total value of your holding doesn’t change.

How a split works

Split	Before	After	Value
2-for-1	10 shares at $200	20 shares at $100	$2,000
4-for-1	10 shares at $200	40 shares at $50	$2,000
10-for-1	10 shares at $200	100 shares at $20	$2,000
1-for-10 (reverse)	100 shares at $2	10 shares at $20	$200

Split

Before

After

Value

2-for-1

10 shares at $200

20 shares at $100

$2,000

4-for-1

10 shares at $200

40 shares at $50

$2,000

10-for-1

10 shares at $200

100 shares at $20

$2,000

1-for-10 (reverse)

100 shares at $2

10 shares at $20

$200

The company’s total market value, your share of the company, and things like the dividend per dollar invested all stay the same. Per-share figures such as earnings per share and dividend per share are divided by the split ratio too, so ratios like P/E don’t change.

Why companies split their shares

Usually after a big price rise, to make each share cheaper to buy, which can help smaller investors and make options on the stock more practical. Well-known examples include Apple’s 4-for-1 split in 2020, Tesla’s 3-for-1 in 2022 and Nvidia’s 10-for-1 in 2024. With fractional shares now common at many brokers, the practical effect is smaller than it used to be.

Reverse splits

A reverse split combines shares: in a 1-for-10, every 10 shares become 1, at ten times the price. Companies often do this to lift a low share price, for example to meet an exchange’s minimum price requirement. It doesn’t change the value of your holding either, though it’s sometimes seen as a sign of a struggling company.

Splits on charts

Charting platforms, including TradingView, normally adjust past prices for splits so the chart doesn’t show a fake crash on the split date. If you compare an old price you remember with today’s chart, it may look different for this reason.

Educational explanation only. ChartWatch is independent and doesn’t give trading or investment advice. Trading carries a risk of loss.

FAQ

Is a stock split good for investors?

It doesn't change the value of your holding. You get more shares at a proportionally lower price.

What happens to my shares in a 2-for-1 split?

You get two shares for every one you held, and the price per share roughly halves. 10 shares at $200 become 20 shares at $100.

What is a reverse stock split?

The opposite: shares are combined, for example 10 into 1, and the price per share rises by the same factor.

Do stock splits affect dividends?

The dividend per share is divided by the split ratio, so the total dividend you receive stays the same.

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