Raising the rates is a way of throttling down the rapid rise of the economy. Too fast is dangerous so the Fed uses this tool to control inflation and ward off disastrous corrections. They've gotten pretty good at it over the last 30 years, learning from each bear and bull market. During the George Bush economy, the average rate on new homes was around 7% and it was considered normal. Now people are freaking out over 5%. The rate increases also influence bank loans, credit cards and anything that requires credit, so when there's even a rumor of this rate going up, people who are invested in the market either panic, dig in, or find ways to move money to areas where higher rates benefit them. Most of it, in my opinion, is an emotional reaction that mitigates itself when people calm down. Long term investors like myself just shrug this stuff off and buy more when the market is down, because it's like a really good sale, buying cheap and reaping the benefits when everything calms down. It has very little to do with presidents and more to do with consumer confidence, which is very easy to manipulate. Stock market is only one of several indicators as to how the economy is doing, and it's usually misleading when compared to unemployment, GDP and consumer spending.