No, you don’t. With Vivid Invest we offer trading via Fractional Сoins. Fractional Coins are investment products; one-to-one bilateral agreements (so-called OTC derivatives) with specific cryptocurrencies as underlying. The price of your Fractional Coins reflects a real coin’s price movements 1:1. There is no leverage.
For more information check “What is the nature of Fractional Coins?”