How did the American stock market usher in a big bull market?

The big bull market in American stock market began after the financial crisis in 2009. At that time, in response to the financial crisis, the Federal Reserve implemented four quantitative easing policies and injected a lot of liquidity into the market. Due to the flood of market liquidity, the main funds flowed to the American stock market, so the American stock market had a big bull market of 10 years.

In addition, corporate profitability is also one of the supports of the bull market. But the biggest driving force of the US stock market is actually corporate repurchase. From 2009 to the end of 20 17, non-financial enterprises in the United States bought $3.37 trillion in stocks, while ETFs and mutual funds bought $ kloc-0/.64 trillion in stocks.