We looked at how many Gen Z and Millennials have a second stream of income, and what they’re doing to earn the money… TL;DR: Over two in five young people have a second stream of income, with Millennials more likely than Gen Z to say they do  Millennials are more likely to have a second stream of income to save for the long-term and so they can have “fun money,” A quarter of young consumers who have a more than one stream of income are using their money to invest in stock market and buy cryptocurrencies YPulse’s Buying Into Crypto...