Interest in altcoins, or alternative digital coins, like dogecoin, surged this year. And among the investors at the forefront is billionaire Mark Cuban, who has built a portfolio of different digital coins and blockchain companies.
His cryptocurrency holdings consist of 60% bitcoin, 30% ether and 10% other altcoins, he disclosed in April. His altcoin holdings include dogecoin, which he bought with his 11-year-old son Jake earlier this year, and litecoin, which he disclosed during a Reddit…
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