Markets always fluctuate and Apple has been hit hard. It almost sounds as though you want the markets to tank because it would hurt Trump.
That's dang sad.
Apple predicts slowing sales because of the slow down in the economy of China, home of the largest smartphone market in the world.
Another reason for a drop in sales is that their customers are keeping their old phones and just replacing batteries and screens (costing little) rather than purchasing dramatically higher priced new models. To many regular users, the improvements in processor speed and screen resolution in new phones aren’t readily discernible, making it hard to justify paying the higher prices.
But, don’t nobody weep for Apple, they’ll do just fine.