I wasn't aware the stock market reacted to his statement of "buying canada" i searched for it but couldn't find any information on that.In many ways - as it is allays the case of a county that is interwoven and reliant onto the global economy
E.g. The US stock market - fell upon his statements
The US$'s buying power will therefore decline
Foreign investors might very well - hold back or even cancel planed investments into the USA.
Etc, etc,