$ZIM Integrated Shipping(ZIM.US)$ would it be wise to sell now for a loss and buy back in when the price settles?my avg is 18.80 or just wait it out?

$ZIM Integrated Shipping(ZIM.US)$ 30 will come

$AMC Entertainment(AMC.US)$ has always been an active stock.
But what really piqued my interest is when $National CineMedia(NCMI.US)$ also became another active stock.
What happened?
Shares of National CineMedia Inc more than doubled in very active trading, after AMC Entertainment Holdings Inc. disclosed that it has taken a large stake in the cinema advertising platform. AMC said late Monday that it owned 16.58 million National CineMedia shares or 9.1% of the ...