Can Polkadot Maintain the Position of Being the Fourth Largest Crypto in the Long Run? News Polkadot has surged in its market cap, enough to place it as the fourth-largest crypto in the place of XRP. Can DOT maintain this position? (Read More) More courses:Polkadot Becomes Fourth-Largest Crypto by Market…Altcoins Undergo Their Best Crypto Week since 2017,…Crypto Long & Short: No, Bitcoin Is Not in a Bubble