I signed up for SoFi's high-yield savings account for a cash bonus, but I'm sticking around for 3 other reasons

Eva-Katalin/Getty Images I signed up for a SoFi Money account for a cash signup bonus and a good interest rate, but I'm sticking around because the company offers an impressive suite of other products, too. SoFi Invest lets you buy stocks, ETFs, cryptocurrencies, and offers a managed portfolio (robo-adviser). Stocks and ETFs trade for free and are available in fractional shares. SoFi also offers student loans, home loans, and personal loans with competitive rates. The free budgeting and money tr...