Actually, if you need to sell immediately, you put in a market sell order. The order should fill at the current bid price when it enters the queue. In a fast moving market, the bid price could go down faster than your order reaches the front of the queue.
Good DD IS NOT just reciting the PRs and company handouts and looking for the good. Those things are never hard to find.
Good DD IS finding out what the company and CEO do NOT want you to know.