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

How is EtherDelta Market Cap calculated?

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

EtherDelta Market Capitalization in USD = Number of EDT in supply X Price of one EtherDelta in USD

Since the price of EtherDelta 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 EtherDelta or predict the price of EtherDelta.