Based on your financial expertise, provide your response or viewpoint on the given financial question or topic. The response format is open.

Why do investors buy stock that had appreciated?
For the same reason you wanted it when you bought it. No-one guarantees that you'll be able to sell the stock you hold, and in fact many people get stuck with stocks they'd like to sell, but no-one is buying. But if investors think there's a profit potential that is not exhausted yet - they'll want to buy the stock.