The Fed and its monetary policy have effect on the entire yield curve; the economy and the stock market. By the decision to cut federal funds rate, the Fed signals increased risk of economic slowdown and lower inflation. Investors rush to safety and buy long-term treasury bonds. The entire yield curve shifts down. Lower interest rates are very beneficial to homeowners, consumers, businesses, overall economy and the stock market.
On one side, the Fed pushes short-term yields higher. On the other side, strong demand from investors pushes long-term yields lower. Investors may demand more long-term US government bonds in the coming years causing the yield curve to turn negative or to invert
The yield curve is likely to continue to flatten. The Fed has a strong control over the short term rates through its FOMC policies: setting the federal funds rate and by purchasing US treasuries. The long-term yields are out of the Fed’s control