Altcoins are highly volatile, as much as it can give you that rior, the coin can also dump to zero without possible come back.
Is like gambling, this coin just decided to give you the jackpot, it's left for you to take profits, or keep risking your luck holding the coin.
But frankly speaking, those who invest early, always have the chance to buy at low price most especially if the project is a good one with potential in the market, congratulations on your wins