| Current Position | |
| Original Shares Owned | |
| Original Purchase Price ($) | |
| Additional Purchase (Averaging Down) | |
| Additional Shares to Buy | |
| Additional Purchase Price ($) | |
| After Averaging Down | |
| Total Shares | -- |
| Total Investment | -- |
| New Average Cost per Share | -- |
| Original Average Cost | -- |
| Average Cost Reduction | -- |
| New Break-Even Price | -- |
| Position Summary | |
| Original Position Value at Current Price | -- |
| Additional Position Value at Current Price | -- |
| Total Position Value at Current Price | -- |
| Unrealized Gain / Loss | -- |
A stock average down calculator is an investment tool that shows how buying additional shares at a lower price affects your average cost per share. When a stock you own declines in price, buying more shares at the lower price reduces your average cost basis, bringing your break-even point closer to the current market price. This stock average down calculator helps you evaluate the mathematical effect of averaging down before you make the trade.
The stock average down calculator uses your original position and planned additional purchase to compute the new weighted average cost per share. It also shows the total position value at the current price and your unrealized gain or loss.
The stock average down calculator also computes the value of your position at the current market price. Enter the current price as the additional purchase price to see the total value if you buy at the current market. The unrealized gain or loss shows the difference between the total current market value and your total investment cost.
The new average cost is a weighted average that gives more weight to larger purchases. If you own 100 shares at $50 and buy 500 shares at $40, the $40 purchase has much more weight, bringing the average closer to $40. The stock average down calculator handles this weighting automatically so you can see the exact effect of any purchase size.
By lowering your average cost, averaging down reduces the price at which you break even. In the example above, the break-even drops from $50 to $45. The stock average down calculator shows this new break-even price clearly, helping you understand how much closer you are to profitability.
Averaging down increases your total investment in the stock and your exposure to further losses. The stock average down calculator shows the total investment amount so you can evaluate whether the increased position size is appropriate for your portfolio. The unrealized gain/loss calculation helps you understand your current position value at the new purchase price.
Averaging down is buying more shares of a stock you already own at a lower price to reduce your average cost per share. For example, buying 100 shares at $50 and then 100 more at $40 gives you an average cost of $45. This stock average down calculator shows the exact mathematical effect of each additional purchase.
Divide your total investment by the total number of shares. New Average = (Original Shares × Original Price + Additional Shares × Additional Price) / (Original Shares + Additional Shares). This stock average down calculator performs this calculation automatically and shows the cost reduction.
Averaging down can be effective if the company's fundamentals remain strong and the price decline is temporary. However, it increases your exposure to a losing position. The stock average down calculator helps you understand the mathematical effect, but the investment decision should be based on your analysis of the company.
Use the formula: Required Shares = Original Shares × (Original Price - Target Price) / (Target Price - Additional Price). This stock average down calculator lets you experiment with different additional share amounts and purchase prices to see how they affect your average cost.