Have you ever wondered why gold prices and stock markets surge when central banks announce quantitative easing policies? I have too, so I decided to learn more about this mechanism.

Quantitative easing (QE) is basically an unconventional monetary tool. Instead of adjusting interest rates as usual, the central bank creates new money and uses it to buy government bonds and other financial assets. The goal? Increase the money supply, lower long-term interest rates, and stimulate the economy.

Looking at history, after the 2008 crisis, the Fed implemented three consecutive QE rounds from 2008 to 2014 with a total value of $3.7 trillion. Around 2015, the ECB also started asset purchases at a scale of 60 billion euros per month, then increased to 80 billion euros in 2016. Even during 2020-2021, the Fed returned to its $120 billion per month bond-buying program to support the economy after COVID-19.

The beauty of this policy is that it helps increase liquidity, reduce borrowing costs, and encourage businesses and individuals to invest and spend more. When interest rates are near zero, this is almost the only tool remaining for central banks.

But not everything is perfect. I realize that QE carries significant risks. First, excessive money supply can lead to inflation. When the economy is operating near full capacity, creating more money only raises prices without generating real value. Second, it creates instability in financial markets—when interest rates fall, investors seek higher yields elsewhere, which can easily lead to asset bubbles. Third, this policy mainly benefits financial institutions and the wealthy (because asset prices rise), while workers and low-income people don’t benefit much.

Take Japan as an example. They applied QE from 2001 to 2006 but failed because businesses and citizens remained worried and lacked confidence. This policy also caused the Yen to depreciate, increasing import costs.

The impact of QE on financial markets is very clear. Bond markets: demand increases, prices rise, yields fall. Stock markets: excess money seeks profitable places, so stocks are bought more actively. Forex: the currency weakens against others. Commodities: demand increases, prices rise. However, too much liquidity can also cause large fluctuations and speculative behaviors.

In summary, QE is a "golden rain" for the short-term market, but its long-term consequences are not insignificant. It’s not a comprehensive cure but only a temporary tool. These policies need careful management and should be combined with other measures to avoid unwanted side effects. As an investor, understanding how QE works helps me make better decisions when the market is volatile.