What are APY & ROI? How do I calculate interest with them?

➊ Annual Percentage Yield (APY)

• Applicable when:
    Portfolio interest is calculated with compound interest
• Formula:
    Pincipal * (1 + APY%) ^ (Days of running/365) - Principal = Interest (Return)
• Example:
    Portfolio A whose days of running are six months and with 15% of APY
    Principal: 1000 USDT
    Estimated Interest: 1000*(1+15%)^(89/365)-1000≒34.666279 USDT
• Note:
  1. Days of the contract period are calculated as of the date of launch. For example, if the portfolio launch on February 1 whose contract period is solid 3 months, the actual days of running are 28 + 31 + 30 = 89.
  2. APY is settled on an hourly basis.
  3. You may use Profit Calculation to calculate the estimated settlement amount.

➋ Return on Investment (ROI)

• Applicable when:
    Portfolio interest is calculated with simple interest
• Formula:
    Interest / Principal = ROI%
• Example:
    Portfolio B whose days of running are six months and with 15% of ROI
    Principal: 1000 USDT
    Estimated Interest: 150 USDT