The capital markets give a reflection on the general status of the economy in any given country. One way to make an assessment on the economy status is the direction and rate of interest rates fluctuations. The Federal Reserve increases or reduces the interest rates so as to control inflation or ease the process of borrowing money. Most banks will follow the guidelines of the Federal Reserve. The fluctuations affect the capital markets and investors need to understand how the markets are influenced.
Borrowing costs
The profitability of a company will determine the stock prices. The company’s profits are affected if it has to pay more in interests in order to borrow capital. If investors suspect that the company many not be able to recover the profits that were used to pay the interest, the cost of stocks could go down. Investors are keen on company profits when the interest rates are high to see if the price of the stock has gone up due to the longstanding presumptions of interest rates. However, when the interests are low, the assumption is that companies can borrow money cheaply. In return, investors will feel that companies will not spend too much money on paying for interests and thus the stock price goes up.
Capital expenses

Cash flow

Expectations
It is not automatic that high interest result directly in low prices in stocks and similarly, low interest rates does not result in high profits for the companies and possible high prices in stocks. It is a good business decision in investors feel that the Federal Reserve increases interest rates to reduce inflation as the prices in capital markets could rise and vice versa, if investors feel the Federal Reserve is reducing interest rates to increase inflation, the prices in capital markets will decline.