What are the key differences between quantitative easing and open market operations in terms of their impact on the economy and financial markets?

Quantitative easing involves central banks buying long-term securities to increase money supply and lower interest rates, aiming to stimulate economic growth. Open market operations involve central banks buying or selling short-term securities to adjust the money supply and influence interest rates. Quantitative easing has a broader impact on the economy and financial markets compared to open market operations, as it directly targets long-term interest rates and can have a more significant effect on asset prices.