I'm looking for a single word that describes that action of making a stock price go up by a lot in a short period of time. The opposite would be "crash" which makes the stock price fall by a lot in a short amount of time.
Edit: I'm going to try to clear this up. I'm not getting confused about for which action I'm looking for a word. I am making a game in which players interact with a virtual stock market. However, there is an "admin" who is in complete and total control of the market, which does not exist in the real world, and I understand this. I do not need words that describe the stock price suddenly rising or falling. I need words that describe the action of causing the price to rise or fall. I realize that this does not happen in the real stock market, but it does happen in my game.