Splits change slices, not the pie
Total value is unchanged.
All tracks and lessons
Stock splits and share dilution
A split changes the number of shares, not the value. Dilution is different — it can shrink your ownership share.
In this lesson you will
- Calculate shares and price after a split
- Tell a split from dilution
- Explain how dilution affects ownership and EPS
A stock split divides each share into more shares. In a 2-for-1 split, one $100 share becomes two $50 shares. Your total value does not change; only the number of shares and the price per share do.
Why companies split
A lower share price can make shares easier to trade in round numbers. A split does not change the company’s value or profits.
Reverse splits
A reverse split combines shares — for example 1-for-10 — raising the price per share. It also does not change total value, though it is sometimes used when a price has fallen very low.
Dilution
Dilution happens when a company issues new shares — to raise money, pay employees or buy another company. Your share count stays the same while the total grows, so your percentage of ownership falls.
Why dilution matters
- Profit is spread over more shares, lowering earnings per share unless profit grows.
- Whether it hurts depends on what the new money achieves.
Education only — GetGuac does not recommend individual stocks.
By the GetGuac team · Editorial policy
Three ideas to keep
Dilution adds slices
Your share of the pie shrinks.
Use of money matters
Dilution can still be worth it.
Do it in 4 steps
Learn split maths
Shares × ratio, price ÷ ratio.
Learn dilution maths
Your shares ÷ new total.
Watch share count
In company reports.
Ask what new money funds
Growth or survival.
Split versus dilution
Made-up company with 1,000,000 shares; you own 10,000 worth $100 each.
| Event | Your shares | Total shares | Your ownership | Your value |
|---|---|---|---|---|
| Before | 10,000 | 1,000,000 | 1.0% | $1,000,000 |
| After 2-for-1 split | 20,000 | 2,000,000 | 1.0% | $1,000,000 |
| After issuing 250,000 new shares (no split) | 10,000 | 1,250,000 | 0.8% | Depends on price |
The split left ownership at 1%; dilution cut it to 0.8%.
Where this usually goes wrong
- Thinking a split makes you richer
- Ignoring rising share counts
- Assuming all dilution is bad
Work out your shares and price after a 3-for-1 split of 30 shares at $150.
Tools and guides for this lesson
Quick quiz
1. After a 2-for-1 split your total value…
2. Dilution happens when…
3. A 1-for-10 reverse split…
0 of 3 answered
Puzzle
You own 30 shares at $150. After a 3-for-1 split, how many shares and at what price?
Show the answer
90 shares at $50
30 × 3 = 90. $150 ÷ 3 = $50. Value stays $4,500.