# How to Calculate a Daily Return

When you're investing, especially if you're a day trader, you can measure how well or how poorly you've done based on the gains or losses in your portfolio over the course of a day. But, there are multiple ways to measure a return, and knowing the different formulas can help you keep tabs on how your investments are performing each day.

How to Calculate a Daily Return
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## Calculating Your Actual Gain or Loss

To figure your actual gain or loss, as measured in dollars and cents, subtract the starting price of the stock from the closing price. Then, multiply the result by the number of shares you owe. For example, say you have 200 shares of RT Corp and the stock starts the day at \$27 and ends at \$25. Subtract \$27 from \$25 to get negative \$2, meaning you had a \$2 loss per share for the day. Then, because you own 200 shares, multiply negative \$2 by 200 to get negative \$400, meaning your daily return was a \$400 loss.

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## Calculating Daily Return as a Percentage

Measuring your daily return as a percentage will account for the relative value of different investments. For example, if you lose \$1 on a \$100 stock, it's not a huge portion of the value. But, if you lose \$1 on a \$10 stock, that's a much bigger deal. To calculate your daily return as a percentage, perform the same first step: subtract the opening price from the closing price. Then, divide the result by the opening price. Finally, multiply the result by 100 to convert to a percentage.