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

How is Monero Classic Market Cap calculated?

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

Monero Classic Market Capitalization in USD = Number of XMC in supply X Price of one Monero Classic in USD

Since the price of Monero Classic 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 Monero Classic or predict the price of Monero Classic.