Could Donald Trump actually have a mental illness, or Is he just a narcissistic jerk?

[MTZehvor]

Slarvax said:
Wait, he's not president yet. What is he thanking himself for?

It's the same logic as the pound decreasing in value after the Brexit vote. Political events cause investors to gain/lose confidence in something (in this case, the American economy), which is shown in an increase of purchasing American companies' stocks. Basically he's claiming that his election has caused investors to gain confidence in the American economy.