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If you invest $2,000 and receive $2,500 in return, your Return on Investment (ROI) is 25.0%. You made a profit of $500 on your initial investment. ROI is one of the most fundamental metrics in investing, business, and finance — it measures what you gained relative to what you invested, expressed as a percentage. A positive ROI means you made money; a negative ROI means you lost money.
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