Millennial investors have emerged from two boom-and-bust cycles more conservative about investing and more skeptical of financial advice than older generations who were hit hardest by the market, according to an Accenture survey released Wednesday.

The survey of some 1,000 high-income, digitally savvy U.S. investors also showed that millennials were the most determined to learn how to invest and pass along wealth to their families.

"This poses a fundamental challenge for financial advisors who will see the greatest transfer of wealth in history from boomers to their heirs over the next several decades," Alex Pigliucci, global managing director of Accenture Wealth and Asset Management Services, said in a statement.