Here Come the Millennials: They are using their digital expertise to change how they shop, invest and finance their future The leading edge of the millennial generation (those born between 1982–2004 or 1980–2000, depending on the source) is now entering its prime spending, household formation and employment years. This 90 million-strong cohort is the largest and most diverse in U.S. history. The group currently controls about $2 trillion in liquid assets, according to Wealthfront. By the end of the decade, that number will grow to $7 trillion. From there, it will grow exponentially as millennials enter their prime earning years while receiving a massive wealth transfer from their boomer parents. The economy will be feeling the impact of millennial choices for decades to come.