Those who invest will obviously not sell at a loss. Even those who received a 25 percent discount.
It so happens that investors panic, seeing how quickly the price falls. Perhaps some price drop are caused by some team members and bounty hunters. Then investors start selling for fear of loss. Thus, the avalanche-panic sale begins.
When a team takes care of its coin, then a few months after listing the price of the coin stabilizes and you can safely trade it.