Should be this period a good moment to sell half of my ASTS shares?

Now it has a good rally and maybe it will grow even more, but my biggest concern is this unstable political period and something is telling me to sell half of my shares to have some liquidity if something goes wrong. Of course its fear and its obvious that I can't time the market. So my questions to you are: What type of event/ bad news could make the market go down sharply? What strategy would be wiser to use in my case? 850 shares, @ around 4$ Much appreciated.