A speculative bubble is when people buy large amounts of stocks (usually with little thought to the actual company) in the hope that they will be worth more in

A speculative bubble is when people buy large amounts of stocks (usually with little thought to the actual company) in the hope that they will be worth more in the future. The promise of a future higher value causes people to rush in, buying more and more stocks until one day people decide that they are not going to get a higher value for their shares and sell them all at the same time. This causes panic selling, and the bubble bursts. I don't see this happening (in tech) right now. Real estate yes, but not tech.