Complete Guide to US Stock Splits
— Price/Share Changes and How a Reverse Split Differs
When stock-split news comes out, you might wonder, "the price is dropping — isn't that a loss?" The short answer: your market value stays the same, only the price becomes more accessible. We break it down precisely with the NVDA 10:1, TSLA 3:1, and AAPL 4:1 split examples.
What Is a Stock Split?
A stock split (Stock Split) takes 1 existing share and divides it into multiple shares. In a 2:1 split, 1 share becomes 2 shares, and the price is cut in half. In a 10:1 split, 1 share becomes 10 shares, and the price becomes 1/10th. The total value of your holding (price × share count = market cap), though, doesn't change.
The Numbers Before and After a Split
| Item | Before Split | After 2:1 Split | After 10:1 Split |
|---|---|---|---|
| Price | $1,000 | $500 | $100 |
| Shares held (on a 10-share base) | 10 shares | 20 shares | 100 shares |
| Total holding value | $10,000 | $10,000 | $10,000 |
| Market cap | Unchanged | Unchanged | Unchanged |
Why Do Companies Split Their Stock?
When a price climbs into the hundreds or thousands of dollars, a small retail investor can struggle to afford even 1 share. A split lowers the price, raising accessibility so more investors can participate. This makes a big difference especially for users on platforms that don't support fractional shares.
- Higher liquidity: more investors can participate, raising trading volume
- Psychological effect: a "cheap-looking" price is expected to draw in new investors
- Easier Dow inclusion: since the Dow is a price-weighted index, a high price gives a stock excessive weight
Notable Stock-Split Examples
| Company | Split Ratio | Date | Pre-Split Price (approx.) |
|---|---|---|---|
| Nvidia (NVDA) | 10:1 | June 2024 | approx. $1,200 |
| Tesla (TSLA) | 3:1 | August 2022 | approx. $900 |
| Apple (AAPL) | 4:1 | August 2020 | approx. $500 |
| Amazon (AMZN) | 20:1 | June 2022 | approx. $2,450 |
NVDA's 10:1 split in June 2024 lowered its price to around the $120 range, drawing a range of expectations including possible inclusion in the S&P 500 or Dow. Interest tends to rise short-term right after a split announcement, but earnings and growth are what determine the long-term price.
To analyze cases of a new high forming after a stock split, see the 52-week-high signal. A gap-up signal also often appears right after a split.
How a Reverse Split Differs
A reverse stock split does the opposite — combining multiple shares into 1 share. In a 1:10 reverse split, 10 shares become 1 share, and the price rises 10x. A reverse split is most often carried out by a company whose price has fallen below Nasdaq's minimum listing requirement (at least $1) to avoid getting delisted.
A reverse split by itself doesn't raise a stock's underlying value, and can even be a way to mask a company's financial-health problems. When a reverse-split filing appears, it's important to check that company's earnings and debt situation first.
Practical Points for a Korean Investor Buying US Stocks
- Record Date: only investors registered on the shareholder ledger on this date get the split. A Korean broker may process it with some lag
- Ex-Date: usually the next trading day after the record date. Trading begins at the new price from this day
- HTS/MTS price display: right after the split, your chart may show a big gap-down, but it isn't a real loss. It switches over to a split-adjusted price basis
- Tax: additional shares acquired from a split generally aren't a taxable event on their own. But check how your cost basis is calculated when you eventually sell