股票均价计算器
计算在不同价格买入股票时的每股平均成本。
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平均价格
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Calculating Your Average Stock Purchase Price
概述
When you buy the same stock at several different prices, your average cost per share — not any single purchase price — determines your profit or loss. This calculator adds up multiple buys and returns the total shares, total cost, and weighted average price, so you always know your true break-even. It runs in your browser and stores nothing.
使用步骤
- 1
Enter each purchase
Add the number of shares and price for every buy you made.
- 2
Add more rows as needed
Include every transaction so the average reflects your full position.
- 3
Read your average price
This weighted average is your break-even price per share.
工作原理
The average price is a weighted average: total amount invested ÷ total shares bought, not a simple average of the prices. Buying more shares at a lower price pulls your average down (often called averaging down); buying at higher prices pulls it up. Knowing this number tells you exactly what price the stock must reach for you to break even.
什么时候用
Tracking your cost basis after several purchases of the same stock. Deciding whether averaging down meaningfully lowers your break-even. Planning a target sell price relative to your true average cost.
常见问题
Because you usually buy different quantities at each price. A weighted average accounts for how many shares you bought at each level, which is your real cost basis.
注意事项
This tool performs arithmetic on the figures you enter and is not investment advice. Past prices do not predict future results — consult a licensed financial advisor before making investment decisions.