My parents are retired and have a perfectly adequate income from a pension plus social security. However, they just got a ~$50k inheritance and don't really know what to do with the money. As they don't actually need the money, an aggressive investment (high stock percentage) would seem appropriate; however, they've never really invested in their entire lives (this is the most liquid cash they've ever had) and I fear they won't have the stomach for a overly volatile strategy. Anyway, I'm looking for a preferably one fund solution for them (two maybe, three is pushing it). Any recommendations?