Stock Average Down Calculator
Calculate your new cost basis after averaging down with a secondary purchase. Track the blended price per share instantly.
Inputs
How to Use This Calculator
Enter your original purchase price and share count, then add the secondary purchase price and quantity. Click Calculate to see the blended price per share and how the total cost adjusts.
Methodology
The calculator uses a weighted average combining the initial and new positions. It totals each position's cost basis and divides by the combined number of shares. Inputs are validated to prevent invalid divisions or NaN outputs.
Full original guide (expanded)
Overview
This calculator helps investors determine their new average price per share when averaging down a stock position. It is particularly useful for those looking to manage their portfolio more effectively.
Average Down Calculator
The calculator uses the weighted average formula to blend the cost basis from the initial and new purchases. Simply input the known prices and share quantities, then review the resulting average price.
Data Source and Methodology
All calculations are strictly based on standard investment formulas. For more details, you can visit Example Source. All results align with the formulas and data provided by this source.
The Formula Explained
The formula used to calculate the new average stock price is:
Average Price = [(Initial Price × Initial Shares) + (New Purchase Price × New Shares)] / (Initial Shares + New Shares)
Glossary of Variables
- Initial Price: The price you originally paid per share.
- Initial Shares: The number of shares you initially purchased.
- New Purchase Price: The price per share for the new shares you buy.
- New Shares: The number of new shares you are purchasing.
- Average Price: The new average price per share after buying additional shares.
Frequently Asked Questions
What does averaging down mean? Averaging down is when an investor buys additional shares of a stock they already own, but at a lower price than their original purchase. This reduces the average cost per share.
Why average down? Investors average down to reduce the average cost of their investments, potentially increasing returns if the stock price rebounds.
Are there risks to averaging down? Yes, averaging down can increase exposure to a falling stock. It should be done with a clear strategy and caution.
How is the new average price calculated? The new average price is calculated by dividing the total cost of shares purchased by the total number of shares owned.
Can I use this calculator for other investments? Yes, this calculator is useful for any investment where you are purchasing additional units at a different price.