I created this calculator because I was often left scratching my head trying to figure out how much to allocate to each stock and maintain my meticulously balanced portfolio. Maybe It’s a bit overboard to be so fractional about it, but when I have the option to invest by dollars rather than whole shares, I like to neatly organize my investments.

The scenario I often use this the most is with my Fidelity brokerage account. When I use my credit card I get 2% cash back, and it gets auto redeemed to my brokerage. I then go in every month and invest whatever kickback I got by percentage.

Use this calculator to determine how to distribute investment funds across different stocks or asset classes to maintain your target allocations. Simply enter your investment amount and set up your desired allocation percentages.

Allocations

Total allocation must equal 100%

Current total: 0%

How to Use This Calculator

  1. Enter the total amount you want to invest
  2. Add each stock or asset class with its target allocation percentage
  3. Click “Calculate Distribution” to see how much to invest in each asset
  4. Add or remove assets as needed to adjust your portfolio

This calculator helps you maintain a balanced portfolio by showing exactly how much to allocate to each investment to reach your target percentages.

Why Portfolio Balance Matters

Maintaining the right balance in your investment portfolio is crucial for:

  • Risk management: Prevents overexposure to any single investment
  • Diversification: Spreads your investments across different assets
  • Rebalancing: Helps you identify when to adjust your holdings
  • Discipline: Removes emotion from investment decisions

Use this calculator whenever you’re adding new funds to your portfolio to ensure you maintain your target asset allocation.