Corporate Action Tool

Stock Split & Bonus Calculator

Calculate the impact of stock splits, reverse splits, and bonus issues on your shares and cost basis. Professional analysis for stock market corporate actions.

Current Holding

Number of Shares

$Average Buy Price

Split Ratio

New

Old

Example: 2:1 Split means you get 2 new shares for every 1 old.

The "No Value" Myth

A stock split does not increase your wealth. It's like cutting a pizza into more slices—the pizza is still the same size. The market often reacts positively due to perceived "affordability" for retail investors.

Post-Split Shares

200

Forward Split (2:1)

Multiplier: 2.00x

$New Adjusted Cost Basis

$100.00

Your new break-even price per share.

Total Investment Value

$20,000.00

Remains unchanged after corporate action.

Professional Insight: Stock splits are often seen as a sign of management's confidence in the company's future price growth. Reverse splits, however, are usually a warning sign of a struggling stock trying to maintain listing requirements.

Mastering Stock Splits & Corporate Actions

Forward Split vs. Reverse Split

In a Forward Split (e.g., 2:1), the company increases the number of shares and decreases the price per share. This is done to make the stock more accessible to retail investors.

In a Reverse Split (e.g., 1:10), the company decreases the number of shares and increases the price per share. This is often used by penny stocks to stay above the $1.00 minimum listing requirement of exchanges like the NASDAQ.

What about Bonus Shares?

A Bonus Issue is similar to a split. If a company announces a "1:5 bonus," it means you get 1 extra share for every 5 you own. In our calculator, this would be entered as a 6:5 ratio (you now have 6 shares for every 5 old ones).

Taxes and Fractions

Most brokers will sell fractional shares resulting from a split and give you the cash (called "Cash in Lieu"). Your total investment value might change by a few cents due to this rounding.

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