We have a similar setup for our 2 yo DD. A 529, an account we save our money for her in for things like future trips to urope, and an account with her personal/gift money. Our account that we're saving to spend on her is in stocks (index funds), but her personal money is in a high interest checking account. I'd be pretty upset if we lost her money in the market, and we figure it's not really our money to make those decisions about. The gift money is hers, to make her own decisions about, but I think we're being good stewards of it in the meantime.