Speaking of U.S. Treasury bonds, it is generally said that the yield of Treasury bonds is a percentage, and there is no unit. Generally speaking, US Treasury bonds refer to 10-year US Treasury bonds. Web page link

At present (2018.10.15), the yield of US Treasury bonds is 3. 150. You can view the real-time market and historical data of British national debt. Web page link

Attachment: The yield of US bonds (generally measured by 10-year treasury bonds) is usually regarded as risk-free income, while investments in stocks, foreign exchange and futures are high-risk. Usually, when the yield of 10-year US Treasury bonds rises to 3%, it will bring great pressure to the financial market-generally speaking, the risk-free return on investment can reach that high, so why invest in the stock market/foreign exchange/futures?

At the beginning of 20 18, 10, the American stock market plummeted, which in turn triggered a global stock market crash. One of the important reasons is that the yield of US 10-year treasury bonds rose to the highest level in seven years, exceeding 3.2%.