Stock Split Calculator
Forward Stock Split
Calculate results of a forward stock split
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Reverse Stock Split
Calculate results of a reverse stock split
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Adjusted Cost Basis
Calculate adjusted cost basis after split
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Formula
New Shares = Old Shares x (New Ratio / Old Ratio) | New Price = Old Price / (New Ratio / Old Ratio)
Frequently Asked Questions
What is a stock split?
A stock split increases the number of shares while proportionally decreasing the price per share. For example, in a 2:1 split, each share becomes 2 shares at half the price. The total value of your holdings remains the same.
What is a reverse stock split?
A reverse stock split consolidates shares, reducing the count while increasing the price. For example, a 1:10 reverse split turns 10 shares at $1 into 1 share at $10. Companies do this to meet exchange listing requirements.
Does a stock split affect my cost basis?
A stock split does not change your total cost basis. The per-share cost basis is adjusted by the split ratio. For a 2:1 split, your cost per share is halved while your number of shares doubles.
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