It has become a common occurrence to hear that the Chinese are the biggest holders of US debt... but that is simply not true. In fact, there are many different pieces of the pie, and China accounts for 9.5%. While this is nearly 1 out of every 10 dollars of US debt, it does not constitute a majority by any means.
American individuals, institutions, and Social Security are by far the biggest owners of US debt, accounting for approximately 60% of our Government's debt.
This chart from
Political Calculations is a great depiction of the scenario:
Political Calculations