More aggressive stock investors employ something more akin to a growth mindset. Since the common stocks in the dual-purpose fund don't have other benefits, like dividends, they're counting on making all their money at the end of the investment.
So, if they buy into the fund at $10 per share, for example, they're hoping that across the fund's lifespan, the stocks inside will gain considerable value and, perhaps, be worth $20 per share or even $200 per share.
After the conservative investors are paid, common stockholders split the remainder, hopefully at a considerable profit. However, there's always a risk that a dual-purpose fund will lose money. Since it liquidates on a given date planned far in advance, it's impossible to predict the market conditions on that specific date, and it can't simply wait to sell at a more favorable time, given the structure of the fund.