Trump: Low interest rates are creating a false market
nbcnews.com
nbcnews.com
In that sense, you can argue that there has been a false rally in the stock market.
Maybe Trump is trying to seem market savvy, or maybe he actually wants to see a rate-hike-initiated selloff that reflects poorly on Obama, and by association Clinton.
I can attest from my family's businesses in the very early '80s that it was very hard to do more than keep them afloat while hoping they went down to something more sane. Now that we're in a regime of financial repression (https://en.wikipedia.org/wiki/Financial_repression) they're earning a pittance out of their retirement savings, they're as I recall getting more from Social Security (!), and due to their work history in a very low cost of living that's not all that much, significantly less than I'm getting having worked in the high cost Boston and D.C. areas.
Still, even a knowledgeable person may have ulterior motives for wishing to see a market sell-off. Especially one who is running for president against an incumbent party.