There are several types of Return on Investment (ROI) that investors and businesses can use to measure the performance of their investments. Some of the most common types include:

Simple ROI: This is the basic measure of ROI and is calculated as the return on an investment divided by its cost.

Annualized ROI: This measure takes into account the time value of money and calculates the ROI over a period of one year.

Gross ROI: This measure only takes into account the return on an investment and does not consider any associated costs or expenses.

Net ROI: This measure takes into account both the return and the costs associated with an investment, providing a more accurate picture of the investment's profitability.

Return on Equity (ROE): This measure is specific to businesses and calculates the return on investment for shareholders.

By understanding the different types of ROI, investors and businesses can choose the most appropriate measure to evaluate the performance of their investments and make informed decisions about future investments.