You can check out above graph to see how the market cap of iEthereum has changed over time. The market cap value depends on the value of iEthereum on that particular day and number of iEthereum in supply at that day.

How is iEthereum Market Cap calculated?

The iEthereum Market cap is calculated using a simple formula. You can find it below:

iEthereum Market Capitalization in USD = Number of IETH in supply X Price of one iEthereum in USD

Since the price of iEthereum is highly volatile you can see the market cap going up and down a lot. Sometimes price and market cap are not linear to each other due to increase in the supply of coins in the market and stable or decrease in the price of the coin. So you can say that it's not simple to predict the market cap of iEthereum or predict the price of iEthereum.