NEW YORK (MainStreet) — When it comes to socking away money for retirement, young Americans are putting their parents and grandparents to shame.

That’s the conclusion of a survey by brokerage firm TD Ameritrade, which asked Americans young and old what they are doing to fund their retirement. The good news is that most of us are at least saving something for retirement: A solid 85% of Americans have either a 401(k) or an IRA, and 36% have both.

A survey finds that the offspring of baby boomers are better at saving money for retirement than their elders.

But when it comes to actually taking advantage of the full range of retirement options out there, there’s a big generational divide at work — and for once it’s young Americans who are proving to be more responsible than their elders. Just 16% of working baby boomers are funding both an IRA and a 401(k), compared with 25% of members of Generation Y and 23% of Gen Xers. “Mature” Americans (defined as those born between 1930 and 1945) fared even worse, with just 9% saying they funded both accounts.