Thank you for all the responses! Since I was considering a Vanguard fund anyway, all the Vanguard info really helps. I've been saving and investing for 15 years and have never before considered a target date fund, but over the last 5 years or so, I haven't been that great about rebalancing and assessing whether my allocation still makes sense. The more I research, the more I realize how little I really know what I'm doing or why, so at this point, I'm thinking about sending future contributions to a target date fund. Because I don't plan on selling any of my current holdings, I realize my portfolio will always be skewed toward the other funds (mostly index funds), but that's OK. I'm trying to keep things simple without screwing it up too much.