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

How is EchoLink Market Cap calculated?

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

EchoLink Market Capitalization in USD = Number of EKO in supply X Price of one EchoLink in USD

Since the price of EchoLink 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 EchoLink or predict the price of EchoLink.