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A stock split, also called a share split, is a corporate action that adjusts the number of outstanding shares and the trading price proportionally within the capital structure.
Last updated on: Jul 31, 2026
In a split event, outstanding shares are increased according to a defined ratio, with proportional adjustment to trading price. Although the number of shares increases, the overall value of the company remains unchanged because the price per share is adjusted proportionally.
For example, in a 2-for-1 stock split, each existing share is divided into two. The shareholder holds twice the number of shares, while the price per share becomes half of its pre-split level. Total ownership percentage and aggregate holding value remain constant.
| Particulars | Before Split | After 2:1 Split |
|---|---|---|
Shares Held |
100 |
200 |
Price per Share |
₹500 |
₹250 |
Total Value |
₹50,000 |
₹50,000 |
This illustration shows that while the number of shares changes, the total value remains unchanged.
Understanding what a stock split means requires looking at its two primary forms. Share restructuring actions are generally classified as forward or reverse splits — the distinction lies in whether the number of shares increases or decreases.
A forward split increases the number of shares in circulation while proportionally reducing the trading price.
If 50 shares trade at ₹800 and the announced ratio is 2:1:
New shares: 100
Adjusted price: ₹400
Total value: ₹40,000
A reverse split consolidates shares, reducing the number outstanding while increasing the trading price proportionally. Reverse splits may be carried out for regulatory compliance or capital-restructuring purposes, and do not necessarily reflect the company's operating performance.
| Particulars | Before 1:5 Reverse Split | After |
|---|---|---|
Shares Held |
500 |
100 |
Price per Share |
₹20 |
₹100 |
Total Value |
₹10,000 |
₹10,000 |
This structure reflects how a stock split ratio affects share count and price without altering total value.
A partial stock split refers to a split carried out at a ratio that can result in fractional share entitlements for some shareholders, for example, a 3:2 split. Exchanges and depositories typically have defined mechanisms for handling such fractional entitlements, such as rounding or cash settlement.
Stock splits and bonus shares both increase the number of shares a shareholder holds, but they are distinct corporate actions that affect the capital structure differently:
| Particulars | Stock Split | Bonus Shares |
|---|---|---|
Source |
Existing shares are subdivided |
New shares issued from free reserves or retained earnings |
Face value |
Reduced proportionally to the split ratio |
Remains unchanged |
Effect on reserves |
No change to reserves |
Reserves are reduced to the extent of the bonus issue |
Effect on share price |
Adjusts down in the same ratio as the split |
Adjusts down in proportion to the bonus ratio |
Effect on total value |
Total value of holding unchanged |
Total value of holding unchanged |
Both actions increase the number of shares outstanding without changing the underlying value of the company.
A stock split restructures the number of outstanding shares while proportionally adjusting the trading price. This action modifies share denomination and results in a proportional adjustment to trading price.
The process generally follows these stages:
Announcement: The company's board proposes a stock split and announces the ratio.
Board/regulatory approval: The proposal is approved by the board of directors and, where applicable, shareholders, in accordance with applicable regulatory requirements. The company then notifies the stock exchanges and depositories for implementation .
Record date: The company fixes a record date to determine which shareholders are eligible for the split.
Ex-date: From the ex-date, the stock trades at the adjusted (post-split) price on the exchange.
Depository credit: Additional shares are credited to eligible shareholders' demat accounts by the depository, reflecting the new share count.
Illustrative scenarios:
3:1 stock split: 1 share becomes 3 shares
5:1 stock split: 1 share becomes 5 shares
1:10 reverse stock split: 10 shares are consolidated into 1 share
Settlement systems automatically adjust holdings in depository records after the record date.
Summary: A split changes share count, not company valuation.
Companies may consider restructuring share count for structural reasons.
Liquidity Considerations: An increase in outstanding shares typically results in a lower per-share price, which may increase the number of buyers and sellers actively trading the stock.
Price Band Adjustment: Share restructuring may alter the per-share trading level following the declared ratio.
Exchange Compliance: Reverse stock splits may be undertaken for capital restructuring or to comply with specific regulatory or listing requirements, where applicable. .
Summary: These actions relate to capital structure rather than operational performance.
A stock split changes the number of shares an investor holds and the price per share, but does not alter the proportion of the company they own. The specific effects differ slightly depending on whether the split is forward or reverse, as outlined below.
Increase in number of shares held
Proportionate decrease in price
No change in ownership percentage
Dividend per share adjusts proportionally
Reduction in share count
Increase in trading price
Ownership proportion unchanged
Common perspective: From an ownership standpoint, the economic value of holdings remains consistent immediately after implementation.
Results in proportional adjustment of trading price
Increases number of shares outstanding
Alters per-share denomination
No impact on underlying fundamentals
Administrative costs
Potential short-term volatility
Amazon: 20:1 stock split in 2022
Infosys Limited: 1:5 stock split in 2022
IRCTC Limited: 5:1 stock split in 2021
Apple Inc.: 4:1 split in 2020
These examples reflect historical instances of share restructuring across markets.
A split increases company value → Incorrect; market capitalisation remains unchanged.
A split guarantees profit → Incorrect; fundamentals remain the same.
Reverse splits indicate distress → Reverse splits may occur for regulatory or capital restructuring reasons.
A stock split changes share count and per-share price proportionally, while leaving total value and market capitalisation unchanged. Whether forward or reverse, these actions are a matter of capital structure and share denomination, carried out within the regulatory framework of stock exchanges and depositories.
Reviewer
Additional shares are credited based on the announced ratio, and price adjusts proportionally.
Dividend per share adjusts in proportion to the split ratio; total payout remains aligned with holdings.
A split does not alter fundamentals; subsequent price movement reflects broader market variables.
Multiple shares are consolidated into fewer shares, increasing price proportionally.
It refers to a corporate action that proportionally adjusts outstanding shares and trading price.
Each share is divided into ten shares, and price adjusts accordingly.
Tax liability generally arises upon sale of shares. A split by itself does not create a taxable event, though cost basis per share is adjusted proportionally.
The decision is taken by the board of directors and approved as per regulatory requirements.
The number changes in accordance with the declared ratio.
No. A forward split increases share count; a reverse split reduces it.
Adjustments are reflected in depository records after the effective date.
Earnings per share and dividend per share adjust proportionally after the split.
The ratio in a stock split defines how many new shares are issued for each existing share. In a 2:1 split, each share becomes two, halving the price; in a 3:1 split, each share becomes three, reducing the price to a third; and in a 5:1 split, each share becomes five, reducing the price to a fifth. In every case, the total value of the holding and the company's market capitalisation remain unchanged — only the share count and per-share price differ according to the ratio applied.
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